2003.9.8
3-MODE 300mA LDO REGULATOR
R1161X SERIES
Rev. 1.10
- 1 -
I
OUTLINE
The R1161X Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current, and low
ON-resistance. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting
output voltage, a current limit circuit, and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function. To prevent the destruction by over current, current
limit circuit is included. The R1161X Series have 3-mode. One is standby mode with CE or standby control pin. Standby mode
realizes ultra small consumption current off mode. Other two modes are realized with ECO pin
. Fast Transient Mode (FT
mode) and Low Power Mode (LP mode) are alternative with ECO pin
. Consumption current is reduced at Low Power Mode
compared with Fast Transient Mode. Output voltage is maintained between FT mode and LP mode.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are SOT-23-5, SON-
6, and HSON-6, high density mounting of the ICs on boards is possible.
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FEATURES
Ultra-Low Supply Current......................................... Typ. 3.5
A(Low Power Mode, V
OUT
<1.6V),
........................................................................................... Typ. 80A (Fast Transient Mode, V
OUT
<1.8V)
........................................................................................... Typ. 60A (Fast Transient Mode, V
OUT
1.8V)
Standby Mode ........................................................... Typ. 0.1
A
Low Dropout Voltage ................................................ Typ. 0.48V(I
OUT
=300mA Output Voltage=1.0V Type)
........................................................................................... Typ. 0.31V(I
OUT
=300mA Output Voltage=1.5V Type)
........................................................................................... Typ. 0.23V(I
OUT
=300mA Output Voltage=3.0V Type)
High Ripple Rejection ............................................... Typ. 65dB(f=1kHz, FT Mode)
Low Temperature-Drift Coefficient of Output Voltage Typ. 100ppm/
C
Excellent Line Regulation ......................................... Typ. 0.01%/V (at Fast Transient Mode)
High Output Voltage Accuracy.................................. 2.0%(3.0% at LP Mode)
Small Package .......................................................... SOT-23-5(Super Mini-mold), SON6, HSON6
Output Voltage........................................................... Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is
possible
Input Voltage ............................................................. Min. 1.40V(V
OUT
1.0V)
Min. 1.45V(V
OUT
<1.0V)
Built-in fold-back protection circuit ..........................Typ. 50mA (Current at short mode)
External Capacitors ...................................................C
IN
= C
OUT
= Tantalum 1.0
F (V
OUT<1.
0V)
...........................................................................................C
IN
= C
OUT
=Ceramic 1.0
F (V
OUT
1.
0V)
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APPLICATIONS
Precision Voltage References.
Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
Power source for battery-powered equipment.
Rev. 1.10
- 2 -
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BLOCK DIAGRAM
R1161XXXXA
R1161XXXXB
V
DD
V
OUT
GND
Vref
Current Limit
+
-
CE
ECO
V
DD
V
OUT
GND
Vref
Current Limit
+
-
CE
ECO
R1161XXXXD
Vref
CurrentLimit
+
-
V
OUT
GND
CE
V
DD
ECO
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SELECTION GUIDE
The output voltage, the chip enable polarity, package type, and the taping type for the ICs can be selected at the user's request.
The selection can be available by designating the part number as shown below;
R1161XXXXX-XX
Part Number
a b a'c d
Code
Contents
a, a'
Designation of Package Type :
R1161NXX1X-XX:SOT-23-5 (Mini-mold), R1161DXX1X-XX:SON6,
R1161DXX2X-XX:HSON6
b
Setting Output Voltage (V
OUT
) :
Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible.
c
Designation of Chip Enable Option :
A:"L" active type.
B:"H" active type.
D:"H" active and with auto discharge function
d
Designation of Taping Type : TR
Refer to Taping Specifications
Rev. 1.10
- 3 -
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PIN CONFIGURATIONS
1
2
3
4
5
SOT- 23 - 5
(mark side)
G SON6
3.0 TYP.
(0
.
5
)
0.2 TYP.
1.
6 T
Y
P
.
2.6 TYP.
(0
.
5
)
0.2 TYP.
1
2
3
6
4
5
GHSON6
6
1
4
3
5
2
2.
8
0.
2
3.
0
0.
2
2.90.2
0.5TYP
Rev. 1.10
- 4 -
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PIN DESCRIPTIONS
SOT-23-5
Pin No.
Symbol
Description
1
V
DD
Input Pin
2
GND
Ground Pin
3
CE or CE
Chip Enable Pin
4
ECO
MODE alternative pin
5
V
OUT
Output pin
SON-6, HSON-6
Pin No.
Symbol
Description
1
V
DD
Input Pin
2
NC
No Connection
3
V
OUT
Output pin
4
ECO
MODE alternative pin
5
GND
Ground Pin
6
CE or CE
Chip Enable Pin
* Tabs and tab suspension leads could be short to the GND level.
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ABSOLUTE MAXIMUM RATINGS
Item
Symbol
Rating
Unit
Input Voltage
V
IN
6.5
V
Input Voltage(ECO Pin)
V
ECO
-0.3 ~ 6.5
V
Input Voltage(CE/CE Pin)
V
CE
-0.3 ~ 6.5
V
Output Voltage
V
OUT
-0.3 ~ V
IN
+0.3
V
Output Current
I
OUT
350
mA
Power Dissipation(SOT23-5)
P
D
250
mW
Power Dissipation(SON-6)
P
D
250
mW
Power Dissipation(HSON-6)
P
D
400
mW
Operating Temperature Range
Topt
-40 ~ 85
C
Storage Temperature Range
Tstg
-55 ~ 125
C
Rev. 1.10
- 5 -
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ELECTRICAL CHARACTERISTICS
G R1161XXXXA
Topt=25
C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
IN
= Set V
OUT
+1V V
ECO
=V
IN
1
A I
OUT
30mA(Note 1)
V
OUT
0.98
(-30mV)
V
OUT
1.02
(30mV
)
V
V
OUT
Output Voltage
V
IN
= Set V
OUT
+1V V
ECO
=GND
1
A I
OUT
30mA(Note 2)
V
OUT
0.97
(-45mV)
V
OUT
1.03
(45mV
)
V
I
OUT
Output Current
V
IN
- V
OUT
=1.0V
300
mA
V
OUT
/
I
OUT
Load Regulation(FT Mode)
V
IN
= Set V
OUT
+1V, V
ECO
=V
IN
1mA
I
OUT
300mA
40
70
mV
V
OUT
/
I
OUT
Load Regulation(LP Mode)
V
IN
= Set V
OUT
+1V, V
ECO
=GND
1mA
I
OUT
100mA
15
30
mV
V
DIF
Dropout Voltage
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
V
IN
= Set V
OUT
+1V
V
ECO
=V
IN,
V
OUT
<1.8V
80
111
A
I
SS1
Supply Current(FT Mode)
V
IN
= Set V
OUT
+1V
V
ECO
=V
IN,
V
OUT
1.8V
60
90
A
V
IN
= Set V
OUT
+1V,
V
OUT
< 1.6V, V
ECO
=GND
3.5
8.0
A
I
SS2
Supply Current(LP Mode)
V
IN
= Set V
OUT
+1V
V
OUT
1.6V, V
ECO
=GND
4.5
9.0
A
Istandby
Supply Current (Standby)
V
IN
= V
CE
= Set V
OUT
+1V
0.1
1.0
A
V
OUT
/
V
IN
Line Regulation(FT Mode)
Set V
OUT
+0.5V
V
IN
6V
I
OUT
= 30mA, V
ECO
=V
IN
Set V
OUT
<0.9V: 1.4V
V
IN
6V
0.01
0.15
%/V
V
OUT
/
V
IN
Line Regulation(LP Mode)
Set V
OUT
+0.5V
V
IN
6V
I
OUT
= 30mA, V
ECO
=GND
Set V
OUT
<0.9V: 1.4V
V
IN
6V
0.05
0.20
%/V
RR
Ripple Rejection(FT Mode)
f = 1kHz, Ripple 0.2Vp-p
V
IN
= Set V
OUT
+1V
I
OUT
= 30mA, V
ECO
=V
IN
65
dB
V
IN
Input Voltage
1.4
6.0
V
V
OUT
/
T
Output Voltage
Temperature Coefficient
I
OUT
= 30mA
-40
C Topt 85C
100
ppm
/
C
Ilim
Short Current Limit
V
OUT
= 0V
50
mA
R
PU
CE Pull-up Resistance
1.87
5.00
12.00
M
R
PD
ECO Pull-down Resistance
1.87
5.00
12.00
M
V
CEH
CE , ECO Input Voltage "H"
1.0
6.0
V
V
CEL
CE , ECO Input Voltage "L"
0.0
0.3
V
V
EN
Output Noise
BW=10Hz to 100kHz
30
Vrms
Note1:
30mV tolerance for V
OUT
1.5V.
Note2:
45mV tolerance for V
OUT
1.5V.
Rev. 1.10
- 6 -
G R1161XXXXB
Topt=25
C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
IN
= Set V
OUT
+1V V
ECO
=V
IN
1
A I
OUT
30mA(Note 1)
V
OUT
0.98
(-30mV)
V
OUT
1.02
(30mV
)
V
V
OUT
Output Voltage
V
IN
= Set V
OUT
+1V
V
ECO
=GND
1
A I
OUT
30mA(Note 2)
V
OUT
0.97
(-45mV)
V
OUT
1.03
(45mV
)
V
I
OUT
Output Current
V
IN
- V
OUT
= 1.0V
300
mA
V
OUT
/
I
OUT
Load Regulation(FT Mode)
V
IN
= Set V
OUT
+1V, V
ECO
=V
IN
1mA
I
OUT
300mA
40
70
mV
V
OUT
/
I
OUT
Load Regulation(LP Mode)
V
IN
= Set V
OUT
+1V, V
ECO
=GND
1mA
I
OUT
100mA
15
30
mV
V
DIF
Dropout Voltage
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
V
IN
= Set V
OUT
+1V
V
ECO
=V
IN,
V
OUT
<1.8V
80
111
A
I
SS1
Supply Current(FT Mode)
V
IN
= Set V
OUT
+1V
V
ECO
=V
IN,
V
OUT
1.8V
60
90
A
V
IN
= Set V
OUT
+1V,
V
OUT
< 1.6V, V
ECO
=GND
3.5
8.0
A
I
SS2
Supply Current(LP Mode)
V
IN
= Set V
OUT
+1V,
V
OUT
1.6V, V
ECO
=GND
4.5
9.0
A
Istandby
Supply Current (Standby)
V
IN
= Set V
OUT
+1V, V
CE
=GND
0.1
1.0
A
V
OUT
/
V
IN
Line Regulation(FT Mode)
Set V
OUT
+0.5V
V
IN
6V
I
OUT
= 30mA, V
ECO
=V
IN
Set V
OUT
<0.9V: 1.4V
V
IN
6V
0.01
0.15
%/V
V
OUT
/
V
IN
Line Regulation(LP Mode)
Set V
OUT
+0.5V
V
IN
6V
I
OUT
= 30mA, V
ECO
=GND
Set V
OUT
<0.9V: 1.4V
V
IN
6V
0.05
0.20
%/V
RR
Ripple Rejection(FT Mode)
f = 1kHz, Ripple 0.2Vp-p
V
IN
= Set V
OUT
+1V
I
OUT
= 30mA, V
ECO
=V
IN
65
dB
V
IN
Input Voltage
1.4
6.0
V
V
OUT
/
T
Output Voltage
Temperature Coefficient
I
OUT
= 30mA
-40
C Topt 85C
100
ppm
/
C
Ilim
Short Current Limit
V
OUT
= 0V
50
mA
R
PDC
CE Pull-down Resistance
1.87
5.00
12.00
M
R
PDE
ECO Pull-down Resistance
1.87
5.00
12.00
M
V
CEH
CE, ECO Input Voltage "H"
1.0
V
IN
V
V
CEL
CE, ECO Input Voltage "L"
0.0
0.3
V
V
EN
Output Noise
BW=10Hz to 100kHz
30
Vrms
R
LOW
Nch On Resistance for auto
discharge (applied to D
version only)
V
CE
= 0V
60
Note1:
30mV tolerance for V
OUT
1.5V.
Note2:
45mV tolerance for V
OUT
1.5V.
Rev. 1.10
- 7 -
G ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25
C
Dropout Voltage
V
DIF
(V)
V
DIF
(ECO=H)
V
DIF
(ECO=L)
Output Voltage
V
OUT
(V)
Condition
Typ.
Max.
Typ.
Max.
0.8= V
OUT
0.620
0.850
0.670
0.900
0.9= V
OUT
0.550
0.780
0.590
0.800
1.0
V
OUT
<1.5
0.480
0.700
0.510
0.750
1.5
V
OUT
< 2.6
0.310
0.450
0.320
0.480
2.6
V
OUT
I
OUT
= 300mA
0.230
0.350
0.240
0.375
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TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be
sure to use a 1.0
F or more capacitor C
OUT
with good frequency characteristics and ESR (Equivalent Series Resistance).
(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation,
the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the
PCB.)
PCB Layout
Make V
DD
and GND line sufficient. If their impedance is high, pick-up the noise or unstable operation may result. Connect a
capacitor with as much as 1.0
F capacitor between V
DD
and GND pin as close as possible.
Set external components, especially output capacitor, as close as possible to the ICs and make wiring as short as possible.
I
TEST CIRCUITS
C1
C2
V
IN
A
I
OUT
VDD
ECO4
OUT
CE
GND
R1161XXXXX
SERIES
Fig.1 Output Voltage vs. Output Current Test Circuit
Rev. 1.10
- 8 -
C1
C2
V
VDD
ECO4
OUT
CE
GND
R1161XXXXX
SERIES
Fig.2 Output Voltage vs. Input Voltage Test Circuit
A
V
IN
C1
C2
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Fig.3 Supply Current vs. Input Voltage Test Circuit
C1
C2
V out
V
I
I
I
I
OUT
OUT
OUT
OUT
VDD
ECO
OUT
CE
GND
R1161XXXX
SERIES
Fig.4 Output Voltage vs. Temperature Test Circuit
A
C1
C2
A
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Fig.5 Supply Current vs. Temperature Test Circuit
Rev. 1.10
- 9 -
C1
C2
V out
V
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
V
Vdif
Fig. 6 Dropout Voltage vs. Output Current/ Set Output Voltage Test Circuit
C2
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Pulse
Generator
Fig. 7 Ripple Rejection Test Circuit
C2
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Pulse
Generator
Fig.8 Input Transient Response Test Circuit
C2
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
C1
Fig.9 Load Transient Response Test Circuit
Rev. 1.10
- 10 -
Function
Generator
C1
C2
VDD
ECO4
OUT
CE
GND
R1161XXXXX
SERIES
Fig.10 Turn on Speed with CE pin Test Circuit
Pulse
Generator
C1
C2
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Fig.11 MODE Transient Response Test Circuit
C1
C2
C2 = CeramicCapacitor
C1 = Ceramic 1.0
F
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Analyzer
Analyzer
Analyzer
Analyzer
Spectrum
Spectrum
Spectrum
Spectrum
SR
SR
SR
SR
S.A.
S.A.
S.A.
S.A.
Fig.12 Output Noise Test Circuit(I
OUT
vs. ESR)
I
TYPICAL APPLICATION
C1
C2
VDD
ECO
OUT
CE
GND
R1161XXXXX
SERIES
Rev. 1.10
- 11 -
(External Components)
Output Capacitor; 1.0
F or more capacity ceramic Type (If V
OUT
<1.0V, Tantalum type is recommended)
Input Capacitor, 1.0
F or more capacity ceramic Type
I
TYPICAL CHARACTERISTICS
1)
Output Voltage vs. Output Current
R1161X08XX ECO=H
R1161X08XX ECO=L
0.0
0.2
0.4
0.6
0.8
1.0
0
200
400
600
Output Current Iout (mA)
Output Voltage Vout(V)
0.0
0.2
0.4
0.6
0.8
1.0
0
200
400
600
Output Current Iout(mA)
Output Voltage
Vout(V)
R1161X15XX ECO=H
R1161X15XX ECO=L
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
200
400
600
Output Current Iout(mA)
Output Voltage
Vout(V)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
200
400
600
Output Current Iout(mA)
Output Voltage
Vout(V)
V
IN
=2.8V
1.45V
V
IN
=2.8V
1.45V
V
IN
=3.5V
1.8V
V
IN
=3.5V
1.8V
Rev. 1.10
- 12 -
R1161X26XX ECO=H
R1161X26XX ECO=L
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
100
200
300
400
500
600
Output Current Iout(mA)
Output Voltage
Vout(V)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
200
400
600
Output Current Iout(mA)
Output Voltage
Vout(V)
R1161X33XX ECO=H
R1161X33XX ECO=L
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
200
400
600
Output Current Iout(mA)
Output Voltage
Vout(V)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
200
400
600
Output Current Iout(mA)
Output Voltage Vout(V)
2)
Output Voltage vs. Input Voltage
R1161X08XX ECO=H
R1161X08XX ECO=L
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
V
IN
=4.6V
2.9V
V
IN
=4.6V
2.9V
V
IN
=5.3V
3.6V
V
IN
=5.3V
3.6V
Rev. 1.10
- 13 -
R1161X15XX ECO=H
R1161X15XX ECO=L
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
R1161X26XX ECO=H
R1161X26XX ECO=L
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
R1161X33XX ECO=H
R1161X33XX ECO=L
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
1
2
3
4
5
6
input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
1
2
3
4
5
6
Input Voltage Vin(V)
Output Voltage
Vout(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
Rev. 1.10
- 14 -
3) Supply Current vs. Input Voltage
R1161X08XX ECO=H
R1161X08XX ECO=L
0
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssL(
A)
R1161X15XX ECO=H
R1161X15XX ECO=L
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssL(
A)
R1161X26XX ECO=H
R1161X26XX ECO=L
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssL(
A)
Rev. 1.10
- 15 -
R1161X33XX ECO=H
R1161X33XX ECO=L
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssH (
A)
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
Input Voltage Vin(V)
Supply Current IssL(
A)
4)
Output Voltage vs. Temperature
R1161X08XX ECO=H
R1161X08XX ECO=L
0.77
0.78
0.79
0.80
0.81
0.82
0.83
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage
Vout(V)
0.77
0.78
0.79
0.80
0.81
0.82
0.83
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage
VoutL(V)
R1161X15XX ECO=H
R1161X15XX ECO=L
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage
VoutH(V)
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage
VoutL(V)
(
C)
(
C)
(
C)
(
C)
Rev. 1.10
- 16 -
R1161X26XX ECO=H
R1161X26XX ECO=L
2.57
2.58
2.59
2.60
2.61
2.62
2.63
2.64
2.65
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage VoutH(V)
2.57
2.58
2.59
2.60
2.61
2.62
2.63
2.64
2.65
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage
VoutL(V)
R1161X33XX ECO=H
R1161X33XX ECO=L
3.23
3.25
3.27
3.29
3.31
3.33
3.35
3.37
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage
VoutH(V)
3.23
3.25
3.27
3.29
3.31
3.33
3.35
3.37
-50
-25
0
25
50
75
100
Temperature Topt
Output Voltage V
OUT
L(V)
5)
Supply Current vs. Temperature
R1161X08XX ECO=H
R1161X08XX ECO=L
0
10
20
30
40
50
60
70
80
90
100
110
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssL(
A)
(
C)
(
C)
(
C)
(
C)
(
C)
(
C)
Rev. 1.10
- 17 -
R1161X15XX ECO=H
R1161X15XX ECO=L
0
10
20
30
40
50
60
70
80
90
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssL(
A)
R1161X26XX ECO=H
R1161X26XX ECO=L
0
10
20
30
40
50
60
70
80
90
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssL(
A)
R1161X33XX ECO=H
R1161X33XX ECO=L
0
10
20
30
40
50
60
70
80
90
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssH(
A)
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current IssL(
A)
(
C)
(
C)
(
C)
(
C)
(
C)
(
C)
Rev. 1.10
- 18 -
6) Dropout Voltage vs. Output Current
R1161X08XX ECO=H
R1161X08XX ECO=L
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_H(V)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_L(V)
R1161X09XX ECO=H
R1161X09XX ECO=L
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_H(V)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_L(V)
R1161X10XX ECO=H
R1161X10XX ECO=L
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
H Vdif_H(V)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_L(V)
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
Rev. 1.10
- 19 -
R1161X15XX ECO=H
R1161X15XX ECO=L
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_H(V)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_L(V)
R1161X26XX ECO=H
R1161X26XX ECO=L
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_H(V)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_L(V)
R1161X33XX ECO=H
R1161X33XX ECO=L
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_H(V)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0
50
100
150
200
250
300
Output Current Iout(mA)
Dropout Voltage
Vdif_L(V)
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
85
C
25
C
-40
C
Rev. 1.10
- 20 -
7) Dropout Voltage vs. Set Output Voltage (Topt=25
C)
R1161XXX1X ECO=H
R1161XXX1X ECO=L
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.5
1
1.5
2
2.5
3
3.5
Set Output Voltage V
REG
(V)
Dropout Voltage
Vdif_H(V)
IOUT=10mA
30mA
50mA
100mA
200mA
300mA
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.5
1
1.5
2
2.5
3
3.5
Set Output Voltage VREG(V)
Dropout Voltage
Vdif_L(V)
IOUT=10mA
30mA
50mA
100mA
200mA
300mA
8) Ripple Rejection vs. Input Bias (Topt=25
C) C
IN
; none, C
OUT
=Ceramic 1.0
F Ripple 0.2V
P-P
R1161X26XX Iout=1mA
R1161X26XX Iout=30mA
0
10
20
30
40
50
60
70
80
2.6
2.7
2.8
2.9
3
3.1
Input Voltage Vin(V)
Ripple Rejection RR(dB)
f=400Hz
f=1kHz
f=10kHz
f=100kHz
0
10
20
30
40
50
60
70
80
2.6
2.7
2.8
2.9
3
3.1
Input Voltage Vin(V)
Ripple Rejection RR(dB)
f=400Hz
f=1kHz
f=10kHz
f=100kHz
R1161X26XX Iout=50mA
0
10
20
30
40
50
60
70
80
2.6
2.7
2.8
2.9
3
3.1
Input Voltage Vin(V)
Ripple Rejection RR(dB)
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Rev. 1.10
- 21 -
9) Ripple Rejection vs. Frequency C
IN;
none
R1161X08XX ECO=H
R1161X08XX ECO=L
V
IN
=1.8V
DC
+0.2Vp-p,C
OUT
=Tantal 1.0
F
V
IN
=1.8V
DC
+0.2Vp-p, C
OUT
= Tantal 1.0
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
R1161X08XX ECO=H
R1161X08XX ECO=L
V
IN
=1.8V
DC
+0.2Vp-p,C
OUT
=Tantal 2.2
F
V
IN
=1.8V
DC
+0.2Vp-p, C
OUT
= Tantal 2.2
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
R1161X10XX ECO=H V
IN
=2.0V
DC
+0.2Vp-p,
C
OUT
=Ceramic 1.0uF
R1161X10XX ECO=L V
IN
=2.0V
DC
+0.2Vp-p,
C
OUT
=Ceramic 1.0uF
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
Rev. 1.10
- 22 -
R1161X10XX ECO=H V
IN
=2.0V
DC
+0.2Vp-p,
C
OUT
=Ceramic 2.2uF
R1161X10XX ECO=L V
IN
=2.0V
DC
+0.2Vp-p,
C
OUT
=Ceramic 2.2uF
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
R1161X15XX ECO=H
R1161X15XX ECO=L
V
IN
=2.5V
DC
+0.2Vp-p, C
OUT
=1.0
F
V
IN
=2.5V
DC
+0.2Vp-p, C
OUT
=1.0
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
R1161X15XX ECO=H
R1161X15XX ECO=L
V
IN
=2.5V
DC
+0.2Vp-p, C
OUT
=2.2
F
V
IN
=2.5V
DC
+0.2Vp-p, C
OUT
=2.2
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
Rev. 1.10
- 23 -
R1161X26XX ECO=H
R1161X26XX ECO=L
V
IN
=3.6V
DC
+0.2Vp-p, C
OUT
= Ceramic 1.0
F
V
IN
=3.6V
DC
+0.2Vp-p, C
OUT
= Ceramic 1.0
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
R1161X26XX ECO=H
R1161X26XX ECO=L
V
IN
=3.6V
DC
+0.2Vp-p, C
OUT
= Ceramic 2.2
F
V
IN
=3.6V
DC
+0.2Vp-p, C
OUT
= Ceramic 2.2
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
R1161X33XX ECO=H
R1161X33XX ECO=L
V
IN
=4.3V
DC
+0.2Vp-p, C
OUT
= Ceramic 1.0
F
V
IN
=4.3V
DC
+0.2Vp-p, C
OUT
= Ceramic 1.0
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
Rev. 1.10
- 24 -
R1161X33XX ECO=H
R1161X33XX ECO=L
V
IN
=4.3V
DC
+0.2Vp-p, C
OUT
= Ceramic 2.2
F
V
IN
=4.3V
DC
+0.2Vp-p, C
OUT
= Ceramic 2.2
F
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_H(dB)
Iout=1mA
Iout=30mA
Iout=50mA
.
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ripple Rejection RR_L(dB)
Iout=1mA
Iout=30mA
Iout=50mA
10) Input Transient Response CIN = none, tr=tf=5
s
R1161X08XX ECO=H I
OUT
=30mA, C
OUT
= Tantalum 1.0uF
R1161X08XX ECO=L I
OUT
=10mA, C
OUT
= Tantalum 1.0uF
0.76
0.78
0.8
0.82
0.84
0.86
0.88
0
10 20 30 40 50 60 70 80 90 100
Time t[
s]
Output Voltage V
OUT
[V]
-2
-1
0
1
2
3
4
Input Voltage V
IN
[V]
0
0.5
1
1.5
2
2.5
3
0
0.4 0.8 1.2 1.6
2
2.4 2.8 3.2 3.6
4
Time t[ms]
Output Voltage V
OUT
[V]
-2
-1
0
1
2
3
4
Input Voltage V
IN
[V]
R1161X10XX ECO=H
R1161X10XX ECO=L
I
OUT
=30mA C
OUT
= Ceramic 1.0
F
I
OUT
=10mA, C
OUT
= Ceramic 1.0
F
0.96
0.98
1
1.02
1.04
1.06
1.08
0
10 20 30 40 50 60 70 80 90 100
Time t[
s]
Output Voltage V
OUT
[V]
-2
-1
0
1
2
3
4
Input Voltage V
IN
[V]
0
0.5
1
1.5
2
2.5
3
0
0.4 0.8 1.2 1.6
2
2.4 2.8 3.2 3.6
4
Time t[ms]
Output Voltage V
OUT
[V]
-2
-1
0
1
2
3
4
Input Voltage V
IN
[V]
Input Voltage
Output Voltage
Input Voltage
Output Voltage
Input Voltage
Output Voltage
Output Voltage
Input Voltage
Rev. 1.10
- 25 -
R1161X26XX ECO=H
R1161X26XX ECO=L
I
OUT
=30mA, C
OUT
= Ceramic 1.0
F
I
OUT
=10mA, C
OUT
= Ceramic 1.0
F
2.56
2.58
2.6
2.62
2.64
2.66
2.68
0
10 20 30 40 50 60 70 80 90 100
Time t[
s]
Output Voltage V
OUT
[V]
-1
0
1
2
3
4
5
Input Voltage V
IN
[V]
2
2.5
3
3.5
4
4.5
5
0
0.4 0.8 1.2 1.6
2
2.4 2.8 3.2 3.6
4
Time t[ms]
Output Voltage V
OUT
[V]
-1
0
1
2
3
4
5
Input Voltage V
IN
[V]
11) Load Transient Response tr=tf=0.5
s
R1161X08XX ECO=H V
IN
=1.8V C
IN
= tantalum 1.0uF,
C
OUT
= tantalum 1.0uF
R1161X08XX ECO=H V
IN
=1.8V, C
IN
= tantalum 1.0uF
C
OUT
= tantalum 1.0uF
0.6
0.7
0.8
0.9
1
1.1
1.2
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-150
-100
-50
0
50
100
150
Output Current I
OUT
[mA]
0.6
0.7
0.8
0.9
1
1.1
1.2
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-120
-90
-60
-30
0
30
60
Output Current I
OUT
[mA]
R1161X08XX ECO=H V
IN
=1.8V, C
IN
= tantalum 1.0uF C
OUT
= tantalum 2.2uF
R1161X08XX ECO=L V
IN
=1.8V, C
IN
= tantalum 1.0uF
C
OUT
= tantalum 1.0uF
0.6
0.7
0.8
0.9
1
1.1
1.2
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-120
-90
-60
-30
0
30
60
Output Current I
OUT
[mA]
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
3.5
4
Time t[ms]
Output Voltage V
OUT
[V]
-40
-30
-20
-10
0
10
20
Output Current I
OUT
[mA]
Output Voltage
Input Voltage
Input Voltage
Output Voltage
Output Voltage
Load Current
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Rev. 1.10
- 26 -
R1161X08XX ECO=L V
IN
=1.8V, C
IN
= tantalum 1.0uF
C
OUT
= Tantalum 2.2uF
R1161X10XX ECO=H V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
3.5
4
Time t[ms]
Output Voltage V
OUT
[V]
-40
-30
-20
-10
0
10
20
Output Current I
OUT
[mA]
0.8
0.9
1
1.1
1.2
1.3
1.4
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-150
-100
-50
0
50
100
150
Output Current I
OUT
[mA]
R1161X10XX ECO=H V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 2.2uF
R1161X10XX ECO=H V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
0.8
0.9
1
1.1
1.2
1.3
1.4
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-150
-100
-50
0
50
100
150
Output Current I
OUT
[mA]
0.8
0.9
1
1.1
1.2
1.3
1.4
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-120
-90
-60
-30
0
30
60
Output Current I
OUT
[mA]
R1161X10XX ECO=H V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 2.2uF
R1161X10XX ECO=L V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
0.8
0.9
1
1.1
1.2
1.3
1.4
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-120
-90
-60
-30
0
30
60
Output Current I
OUT
[mA]
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
3.5
4
Time t[ms]
Output Voltage V
OUT
[V]
-40
-30
-20
-10
0
10
20
Output Current I
OUT
[mA]
Output Voltage
Load Current
Output Voltage
Load Current
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Rev. 1.10
- 27 -
R1161X10XX ECO=L V
IN
=2.0V, C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 2.2uF
R1161X26XX ECO=H V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
3.5
4
Time t[ms]
Output Voltage V
OUT
[V]
-40
-30
-20
-10
0
10
20
Output Current I
OUT
[mA]
2.4
2.5
2.6
2.7
2.8
2.9
3
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-150
-100
-50
0
50
100
150
Output Current I
OUT
[mA]
R1161X26XX ECO=H V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 2.2uF
R1161X26XX ECO=H V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
2.4
2.5
2.6
2.7
2.8
2.9
3
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-150
-100
-50
0
50
100
150
Output Current I
OUT
[mA]
2.4
2.5
2.6
2.7
2.8
2.9
3
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-120
-90
-60
-30
0
30
60
Output Current I
OUT
[mA]
R1161X26XX ECO=H V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 2.2uF
R1161X26XX ECO=L V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
2.4
2.5
2.6
2.7
2.8
2.9
3
0
5
10
15
20
25
30
35
40
Time t[
s]
Output Voltage V
OUT
[V]
-120
-90
-60
-30
0
30
60
Output Current I
OUT
[mA]
1.5
2
2.5
3
3.5
4
4.5
0
0.5
1
1.5
2
2.5
3
3.5
4
Time t[ms]
Output Voltage V
OUT
[V]
-40
-30
-20
-10
0
10
20
Output Current I
OUT
[mA]
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Load Current
Output Voltage
Rev. 1.10
- 28 -
R1161X26XX ECO=L V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 2.2uF
1.5
2
2.5
3
3.5
4
4.5
0
0.5
1
1.5
2
2.5
3
3.5
4
Time t[ms]
Output Voltage V
OUT
[V]
-40
-30
-20
-10
0
10
20
Output Current I
OUT
[mA]
12)Turn on speed with CE pin
R1161X08XX ECO=H V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=0mA
R1161X08XX ECO=L V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=0mA
-2.7
-1.8
-0.9
0
0.9
1.8
2.7
-30 -20 -10
0
10 20 30 40 50 60 70
Time t[
s]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
Output Voltage V
OUT
[V]
-2.7
-1.8
-0.9
0
0.9
1.8
2.7
-12
0
-80 -40
0
40 80 120 160 200 240 280
Time t[ms]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
Output Voltage V
OUT
[V]
R1161X08XX ECO=H V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=30mA
R1161X08XX ECO=L V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=30mA
-2.7
-1.8
-0.9
0
0.9
1.8
2.7
-30 -20 -10
0
10 20 30 40 50 60 70
Time t[
s]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
Output Voltage V
OUT
[V]
-2.7
-1.8
-0.9
0
0.9
1.8
2.7
-0.3 -0.2 -0.1 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
Output Voltage V
OUT
[V]
Load Current
Output Voltage
Rev. 1.10
- 29 -
R1161X08XX ECO=H V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=300mA
R1161X08XX ECO=L V
IN
=1.8V, C
IN
=Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=300mA
-2.7
-1.8
-0.9
0
0.9
1.8
2.7
-30 -20 -10
0
10 20 30 40 50 60 70
Time t[
s]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
Output Voltage V
OUT
[V]
-2.7
-1.8
-0.9
0
0.9
1.8
2.7
-0.3 -0.2 -0.1 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
Output Voltage V
OUT
[V]
R1161X33XX ECO=H V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=0mA
R1161X33XX ECO=L V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=0mA
-10
-8
-6
-4
-2
0
2
4
6
-60 -40 -20
0
20 40 60 80 100 120 140
Time t[
s]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Output Voltage V
OUT
[V]
-10
-8
-6
-4
-2
0
2
4
6
-120 -80 -40
0
40
80 120 160 200 240 280
Time t[ms]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Output Voltage V
OUT
[V]
R1161X33XX ECO=H V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=30mA
R1161X33XX ECO=L V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=30mA
-10
-8
-6
-4
-2
0
2
4
6
-60 -40 -20
0
20
40
60
80 100 120 140
Time t[
s]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Output Voltage V
OUT
[V]
-10
-8
-6
-4
-2
0
2
4
6
-0.3 -0.2 -0.1 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Output Voltage V
OUT
[V]
VCE=0V
1.8V
VCE=0V
1.8V
Rev. 1.10
- 30 -
R1161X33XX ECO=H V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=300mA
R1161X33XX ECO=L V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=300mA
-10
-8
-6
-4
-2
0
2
4
6
-60 -40 -20
0
20
40
60
80 100 120 140
Time t[
s]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Output Voltage V
OUT
[V]
-10
-8
-6
-4
-2
0
2
4
6
-0.3 -0.2 -0.1 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Output Voltage V
OUT
[V]
13) Turn-off Speed with CE
R1161X08XD V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=0mA
R1161X08XD V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=30mA
-1.8
-1.2
-0.6
0
0.6
1.2
1.8
2.4
-0.6 -0.4 -0.2
0
0.2 0.4 0.6 0.8
1
1.2
Time t[ms]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
Output Voltage V
OUT
[V]
-1.8
-1.2
-0.6
0
0.6
1.2
1.8
2.4
-0.6 -0.4 -0.2
0
0.2 0.4 0.6 0.8
1
1.2
Time t[ms]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
Output Voltage V
OUT
[V]
R1161X08XD V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=300mA
R1161X33XD V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=0mA
-1.8
-1.2
-0.6
0
0.6
1.2
1.8
2.4
-0.6 -0.4 -0.2
0
0.2 0.4 0.6 0.8
1
1.2
Time t[ms]
CE Input Voltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
Output Voltage V
OUT
[V]
-5
-4
-3
-2
-1
0
1
2
3
4
5
-0.3 -0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
9
Output Voltage V
OUT
[V]
VCE=0V
4.3V
VCE=0V
4.3V
Rev. 1.10
- 31 -
R1161X33XD V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=30mA
R1161X33XD V
IN
=4.3V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=300mA
-5
-4
-3
-2
-1
0
1
2
3
4
5
-0.3 -0.2 -0.1 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
9
Output Voltage V
OUT
[V]
-5
-4
-3
-2
-1
0
1
2
3
4
5
-0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time t[ms]
CE Input Voltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
9
Output Voltage V
OUT
[V]
14)Output Voltage at Mode alternative point
R1161X08XX V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF
R1161X08XX V
IN
=1.8V, C
IN
= Tantalum 1.0uF
C
OUT
= Tantalum 1.0uF I
OUT
=0mA
0.78
0.79
0.8
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.9
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
1.01
1.02
1.03
1.04
-0.
2
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
Time t[ms]
Output Voltage VOUT[V]
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
ECO Input Voltage VECO[
V
0.78
0.79
0.8
0.81
0.82
0.83
0.84
0.85
0.86
-10 0 10 20 30 40 50 60 70 80 90
Time t[ms]
Output Voltage VOUT[V]
-5
-4
-3
-2
-1
0
1
2
3
ECO Input Voltage VECO[
V
VECO=0V
1.4V
IOUT=1mA
IOUT=100mA
IOUT=200mA
IOUT=300mA
IOUT=50mA
IOUT=10mA
0.81
0.80
0.79
0.81
0.80
0.79
0.81
0.80
0.79
0.81
0.80
0.79
0.81
0.80
0.79
Rev. 1.10
- 32 -
R1161X10XX V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
R1161X10XX V
IN
=2.0V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=0mA
0 .9 8
0 .9 9
1 .0 0
1 .0 1
1 .0 2
1 .0 3
1 .0 4
1 .0 5
1 .0 6
1 .0 7
1 .0 8
1 .0 9
1 .1 0
1 .1 1
1 .1 2
1 .1 3
1 .1 4
1 .1 5
1 .1 6
1 .1 7
1 .1 8
1 .1 9
1 .2 0
1 .2 1
1 .2 2
1 .2 3
1 .2 4
- 0 .
2
0
0 .2 0 .4 0 .6 0 .8
1
1 .2 1 .4 1 .6 1 .8
T im e t[m s ]
Output Voltage VOUT[V
]
- 1 0
- 9
- 8
- 7
- 6
- 5
- 4
- 3
- 2
- 1
0
1
2
3
ECO Input Voltage VECO[
V
0.98
0.99
1
1.01
1.02
1.03
1.04
1.05
1.06
-10 0 10 20 30 40 50 60 70 80 90
Time t[ms]
Output Voltage VOUT[V]
-5
-4
-3
-2
-1
0
1
2
3
ECO Input Voltage VECO[
V
R1161X26XX V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF
R1161X26XX V
IN
=3.6V, C
IN
= Ceramic 1.0uF
C
OUT
= Ceramic 1.0uF I
OUT
=0mA
2 .5 8
2 .5 9
2 .6 0
2 .6 1
2 .6 2
2 .6 3
2 .6 4
2 .6 5
2 .6 6
2 .6 7
2 .6 8
2 .6 9
2 .7 0
2 .7 1
2 .7 2
2 .7 3
2 .7 4
2 .7 5
2 .7 6
2 .7 7
2 .7 8
2 .7 9
2 .8 0
2 .8 1
2 .8 2
2 .8 3
2 .8 4
- 0 .
2
0
0 .2 0 .4 0 .6 0 .8
1
1 .2 1 .4 1 .6 1 .8
T im e t[m s ]
Output Voltage VOUT[V]
- 2 1
- 2 0
- 1 9
- 1 8
- 1 7
- 1 6
- 1 5
- 1 4
- 1 3
- 1 2
- 1 1
- 1 0
- 9
- 8
- 7
- 6
- 5
- 4
- 3
- 2
- 1
0
1
2
3
4
5
ECO Input Voltage VECO[V
2.58
2.59
2.6
2.61
2.62
2.63
2.64
2.65
2.66
-10 0 10 20 30 40 50 60 70 80 90
Time t[ms]
Output Voltage V
O
U
T
[V]
-4
-3
-2
-1
0
1
2
3
4
ECO Input Voltage V
ECO
[V]
IOUT=300mA
IOUT=200mA
IOUT=1mA
IOUT=50mA
IOUT=10mA
IOUT=1mA
IOUT=100mA
IOUT=50mA
IOUT=10mA
VECO=0V
2.0V
2.61
2.60
2.59
2.61
2.60
2.59
2.61
2.60
2.59
2.61
2.60
2.59
2.61
2.60
2.59
1.01
1.00
0.99
1.01
1.00
0.99
1.01
1.00
0.99
1.01
1.00
0.99
1.01
1.00
0.99
IOUT=100mA
IOUT=200mA
IOUT=300mA
Rev. 1.10
- 33 -
I
TECHNICAL NOTES
When using these ICs, consider the following points:
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be
sure to use a capacitor C
OUT
with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the
range described as follows:
The relations between I
OUT
(Output Current) and ESR of Output Capacitor are shown below. The conditions when the white
noise level is under 40
V(Avg.) are marked as the hatched area in the graph.
<Test conditions>
(1) Frequency band: 10Hz to 2MHz
(2) Temperature: 25
C
R1161X08XX V
IN
=1.4V to 6.0V, ECO=H
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
R1161X08XX V
IN
=1.4V to 6.0V, ECO=L
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
0.01
0.1
1
10
100
0
50
100
150
200
250
300
Output Current IOUT [mA]
ESR [
]
0.01
0.1
1
10
100
0
50
100
150
200
250
300
Output Current IOUT[mA]
ESR [Ohm
]
R1161X10XX V
IN
=1.4V to 6.0V, ECO=H
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
R1161X10XX V
IN
=1.4V to 6.0V, ECO=L
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
0.01
0.1
1
10
100
0
100
200
300
Output Current IOUT [mA]
ESR [Ohm
]
0.01
0.1
1
10
100
0
100
200
300
Output Current IOUT [mA]
ESR [Ohm
Rev. 1.10
- 34 -
R1161X26XX V
IN
=3.0V to 6.0V, ECO=H
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
R1161X26XX V
IN
=3.0V to 6.0V, ECO=L
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
0.01
0.1
1
10
100
0
100
200
300
Output Current I
OUT
[mA]
ESR [
]
0.01
0.1
1
10
100
0
100
200
300
Output Current IOUT [mA]
ESR [Ohm
R1161X15XX V
IN
=2.0V to 6.0V, ECO=H
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
R1161X30XX V
IN
=3.6V to 6.0V, ECO=H
C
IN
= Ceramic 1.0uF C
OUT
= Ceramic 1.0uF
0.01
0.1
1
10
100
0
100
200
300
Output Current I
OUT
[mA]
ESR [
]
0.01
0.1
1
10
100
0
100
200
300
Output Current IOUT [mA]
ESR [Ohm
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