3-MODE 150mA LDO REGULATOR with the
Reverse Current Protection
R1163x SERIES
1
R1163x_E1/2004/08/27
OUTLINE
The R1163x Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy
and low supply current. These ICs perform with the chip enable function and realize a standby mode
with ultra low supply current. To prevent the destruction by over current, the current limit circuit is
included. The R1163x Series have 3-mode. One is standby mode with CE or standby control pin. Other
two modes are realized with ECO pinTM. Fast Transient Mode (FT mode) and Low Power Mode (LP mode)
are alternative with ECO pinTM. Consumption current is reduced at Low Power Mode compared with
Fast Transient Mode. The output voltage is maintained between FT mode and LP mode.
Further, the reverse current protection circuit is built-in. Therefore, if a higher voltage than V
DD
pin is
forced to the output pin, the reverse current to V
DD
pin is very small (Max. 0.1
A) , so it is suitable for
backup circuit.
Since the packages for these ICs are SOT-23-5 and thin SON6 packages, high density mounting of
the ICs on boards is possible.
FEATURES
Ultra-Low Supply Current ..................................Typ. 6.0A (Low Power Mode)
Typ. 70A (Fast Transient Mode)
Standby Mode ....................................................Typ. 0.6A
Reverse Current .................................................Max. 0.1A
Low Dropout Voltage ..........................................
Typ. 0.25V
(I
OUT
=150mA Output Voltage=3.0V Type)
High Ripple Rejection .........................................Typ. 70dB (f=1kHz, FT Mode)
Low Temperature-Drift Coefficient of Output Voltage
Typ. 100ppm/C
Excellent Line Regulation ...................................Typ. 0.02%/V
High Output Voltage Accuracy............................1.5% (2.5% at LP Mode)
Small Package....................................................SOT-23-5 (Super Mini-mold), SON6
Output Voltage...................................................Stepwise setting with a step of 0.1V in the range of
1.5V to 4.0V is possible
Built-in fold-back protection circuit ....................Typ. 40mA (Current at short mode)
Output Capacitor Recommendation....................C
IN
= Ceramic 1
F, C
OUT
= Ceramic 0.47
F
APPLICATIONS
Precision Voltage References.
Power source for electrical appliances such as cameras, VCRs and hand-held communication
equipment.
R1163x
2
Power source for battery-powered equipment.
BLOCK DIAGRAM
R1163xxx1B
R1163xxx1D
SELECTION GUIDE
The output voltage, the auto-discharge function, the package 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;
R1163xxx1x-xx
Part Number
a b c d
Code
Contents
a
Designation of Package Type :
N:SOT-23-5 (Mini-mold) D:SON-6
b
Setting Output Voltage (V
OUT
) :
Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible.
New options: 2.85V type: R1163X281X5-XX, 1.85V type: R1163X181X5-XX.
c
Designation of Chip Enable Option :
B: "H" active and without the auto-discharge function.
D: "H" active and with the auto-discharge function.
d
Designation of Taping Type :
Refer to Taping Specifications; TR type is the standard direction.
Vref
Current
Limit
+
-
CE
V
DD
V
OUT
GND
ECO
Reverse
Detector
V
OUT
ECO
V
ref
Current Limit
+
-
GND
Reverse
Detector
C
E
V
DD
R1163x
3
PIN CONFIGURATION
SOT-23-5
SON-6
1
2
3
5
4
(mark side)
1
2
3
6
5
4
PIN DESCRIPTION
SOT-23-5
SON-6
Pin No.
Symbol
Description
Pin
No.
Symbol
Description
1
V
DD
Input Pin
1
V
DD
Input Pin
2
GND
Ground Pin
2
NC
No Connection
3
CE
Chip Enable Pin
3
V
OUT
Output pin
4
ECO
MODE alternative pin
4
ECO
MODE alternative pin
5
V
OUT
Output pin
5
GND
Ground Pin
6
CE
Chip Enable Pin
*Tab and tab suspension leads for SON6 should not be connected to other voltage level areas except
GND.
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
IN
Input Voltage
6.5
V
V
ECO
Input Voltage (ECO Pin)
-0.3 ~ 6.5
V
V
CE
Input Voltage (CE Pin)
-0.3 ~ 6.5
V
V
OUT
Output Voltage
-0.3 ~ 6.5
V
I
OUT
Output Current
180
mA
P
D
Power Dissipation
250
mW
Topt
Operating Temperature Range
-40 ~ 85
C
Tstg
Storage Temperature Range
-55 ~ 125
C
R1163x
4
ELECTRICAL CHARACTERISTICS
Topt=25C
Symbol Item
Conditions
Min.
Typ.
Max.
Unit
V
IN
= Set V
OUT
+1V
V
ECO
= V
IN
1A
I
OUT
30mA
V
OUT
0.985
V
OUT
1.015
V
V
OUT
Output
Voltage
V
IN
= Set V
OUT
+1V
V
ECO
= GND
1A
I
OUT
30mA
V
OUT
0.975
V
OUT
1.025
V
V
IN
= Set V
OUT
+1V, I
OUT
= 30mA
V
OUT
> 2V
-1.2
0.0
+1.2 %
V
OUT
Output Voltage difference between
LP Mode and FT Mode
V
OUT
2V
-24
0
+24 mV
I
OUT
Output
Current
V
IN
- V
OUT
= 1.0V
150
mA
V
OUT
/
I
OUT
Load Regulation (FT Mode)
V
IN
= Set V
OUT
+1V,
V
ECO
= V
IN
1mA
I
OUT
150mA
20 40 mV
V
OUT
/
I
OUT
Load Regulation (LP Mode)
V
IN
= Set V
OUT
+1V,
V
ECO
= GND
1mA
I
OUT
150mA
10
45 mV
V
DIF
Dropout
Voltage
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
I
SS1
Supply Current (FT Mode)
V
IN
= Set V
OUT
+1V
V
ECO
= V
IN
, I
OUT
= 0mA
70
100
A
I
SS2
Supply Current (LP Mode)
V
IN
= Set V
OUT
+1V, I
OUT
= 0mA
V
ECO
= GND
6.0
10.0
A
Istandby Supply Current (Standby)
V
IN
= Set V
OUT
+1V V
CE
=GND
0.4
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
0.02
0.10 %/V
V
OUT
/
V
IN
Line Regulation (LP Mode)
Set V
OUT
+0.5V
V
IN
6V
I
OUT
= 30mA, V
ECO
= GND
0.05
0.20 %/V
RR
Ripple Rejection (FT Mode)
f = 1kHz
f=10kHz
Ripple 0.2Vp-p
V
IN
= Set V
OUT
+1V
I
OUT
= 30mA, V
ECO
= V
IN
If V
OUT
1.7V, then
V
IN
= Set V
OUT
+1V
70
60
dB
V
IN
Input
Voltage
2.0
6.0 V
V
OUT
/
T
Output Voltage
Temperature Coefficient
I
OUT
= 30mA
-40C
Topt 85C
100
ppm
/C
I
LIM
Short Current Limit
V
OUT
= 0V
40
mA
I
PD
CE Pull-down Constant Current
0.3
0.6
A
R
PD
ECO
Pull-down
Resistance
2 5 30
M
V
CEH
CE, ECO Input Voltage "H"
1.0
6.0
V
V
CEL
CE, ECO Input Voltage "L"
0.0
0.4
V
e
n
Output Noise "H" (FT Mode)
BW= 10Hz to 100kHz
30
Vrms
e
n
Output Noise "L" (LP Mode)
BW= 10Hz to 100kHz
40
Vrms
R
LOW
Nch Tr. On Resistance for
auto-discharge function (Applied
only to D version)
V
CE
=0V
60
I
REV
Reverse
Current
V
OUT
>0.5V, 0V
V
IN
6V
0.001
0.100
A
R1163x
5
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25C
Dropout Voltage(V)
V
DIF
(ECO=H)
V
DIF
(ECO=L)
Output Voltage
V
OUT
(V)
Condition
Typ.
Max.
Typ.
Max.
1.5
V
OUT
< 1.6
0.400
0.680
0.420
0.680
1.6
V
OUT
< 1.7
0.380
0.550
0.390
0.550
1.7
V
OUT
< 1.8
0.350
0.520
0.370
0.520
1.8
V
OUT
< 2.0
0.340 0.490
0.350
0.490
2.0
V
OUT
< 2.8
0.290 0.425
0.300
0.425
2.8
V
OUT
4.0
I
OUT
= 150mA
0.250
0.350
0.250 0.350
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 0.47F or more ceramic capacitor C
OUT
.
(Test these ICs with as same external components as ones to be used on the PCB.)
When a tantalum capacitor is used with this IC, if the equivalent series resistor (ESR) of the capacitor
is large, output voltage may be unstable.
PCB
Layout
Make
V
DD
and GND lines sufficient. If their impedance is high, noise pickup or unstable operation
may result. Connect a capacitor with as much as 1.0F capacitor between V
DD
and GND pin as close as
possible.
Set external components such as an output capacitor, as close as possible to the ICs and make
wiring as short as possible.
R1163x
6
TYPICAL APPLICATION
*External
Components ex. : C1: Ceramic Capacitor 1.0
F
C2: Ceramic Capacitor 0.47
F (Murata GRM40B474K)
TYPICAL CHARACTERISTICS
Unless otherwise provided, capacitors are ceramic type.
1) Output Voltage vs. Output Current
R1163X151X ECO=H
R1163X151X ECO=L
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
100
200
300
400
Output Current Iout (mA)
Out
put
V
o
l
t
age H V
out
H (V
)
Vin=2V
Vin=2.5V
3.5V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
100
200
300
400
Output Current Iout (mA)
Out
put
V
o
l
t
age L V
out
L (V
)
Vin=2V
Vin=2.5V
3.5V
C1
C2
V
V
V
V
OUT
OUT
OUT
OUT
I
I
I
I
OUT
OUT
OUT
OUT
VDD
ECO
OUT
CE
GND
R 1163X
SERIES
SERIES
SERIES
SERIES
R1163x
7
R1163X281X ECO=H
R1163X281X ECO=L
R1163X40X ECO=H
R1163X40X ECO=L
2) Output Voltage vs. Input Voltage
R1163X151X ECO=H
R1163X15X ECO=L
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
100
200
300
400
Output Current Iout(mA)
Out
put
V
o
l
t
age H V
out
H (V
)
Vin=3.1V
Vin=3.3V
Vin=3.8V
4.8V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
100
200
300
400
Output Current Iout(mA)
Output V
o
ltage L V
o
utL(V
)
Vin=3.1V
Vin=3.3V
Vin=3.8V
4.8V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
100
200
300
400
Output Current Iout(mA)
Out
put
V
o
l
t
age H V
out
H (V
)
Vin=4.3V
Vin=4.5V
Vin=5V/6V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
100
200
300
400
Output Current Iout(mA)
Out
put
V
o
l
t
age L V
out
L(V
)
Vin=4.3V
Vin=4.5V
Vin=5V
6V
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)
Out
put
V
o
l
t
age H V
out
H(V
)
IOUT=1mA
IOUT=30m
A
IOUT=50m
A
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)
Out
put
V
o
l
t
age L V
out
L (V
)
IOUT=1mA
IOUT=30m
A
IOUT=50m
A
R1163x
8
R1163X28X ECO=H
R1163X28X ECO=L
R1163X40X ECO=H
R1163X40X ECO=L
3) Supply Current vs. Input Voltage
R1163X151X ECO=H
R1163X151X 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)
Out
put
V
o
l
t
age H V
out
H (V
)
IOUT=1mA
IOUT=30m
A
IOUT=50m
A
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)
Out
put
V
o
l
t
age L V
out
L (V
)
IOUT=1mA
IOUT=30m
A
IOUT=50m
A
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
1
2
3
4
5
6
Input Voltage Vin (V)
Out
put
V
o
l
t
age H V
out
H (V
)
IOUT=1mA
IOUT=30m
A
IOUT=50m
A
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
1
2
3
4
5
6
Input Voltage Vin(V)
Out
put
V
o
l
t
age L V
out
L(V
)
IOUT=1mA
IOUT=30m
A
IOUT=50m
A
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
6
Input Voltage Vin(V)
S
uppl
u Current
H I
s
s
H
(
A
)
0
1
2
3
4
5
6
7
8
0
2
4
6
Input Voltage V
IN
[V]
S
uppl
y
Current
I
SS
[A]
R1163x
9
R1163X281X ECO=H
R1163X281X ECO=L
R1163X401X ECO=H
R1163X401X ECO=L
4) Output Voltage vs. Temperature
R1163X151X ECO=H
R1163X151X 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
Out
put
V
o
l
t
age L V
out
L(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 V
o
ltage H V
outH(V
)
(
C)
(
C)
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
6
Input Voltage Vin(V)
S
uppl
y
Current
H I
s
s
H
(
A
)
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
Input Voltage VIN[V]
S
uppl
y
Current
I
S
S
[
A
]
0
10
20
30
40
50
60
70
80
0
1
2
3
4
5
6
Input Voltage Vin(V)
S
uppl
y
Current
H I
s
s
H
(
A
)
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
Input Voltage VIN[V]
S
uppl
y
Current
I
S
S
[
A
]
R1163x
10
R1163X281X ECO=H
R1163X281X ECO=L
R1163X401X ECO=H
R1163X401X ECO=L
5) Supply Current vs. Temperature
R1163X151X ECO=H Vin=2.5V
R1163X151X ECO=L Vin=2.5V
0
1
2
3
4
5
6
7
8
9
10
-50
-25
0
25
50
75
100
Temperature Topt
S
uppl
y
Current
I
S
S
[
A
]
2.76
2.77
2.78
2.79
2.80
2.81
2.82
2.83
-50
-25
0
25
50
75
100
Temperature Topt
Out
put
V
o
l
t
age H V
out
H (V
)
2.76
2.77
2.78
2.79
2.80
2.81
2.82
2.83
-50
-25
0
25
50
75
100
Temperature Topt
Out
put
V
o
l
t
age L V
o
ut
L(V
)
3.97
3.98
3.99
4.00
4.01
4.02
4.03
4.04
4.05
-50
-25
0
25
50
75
100
Temperature Topt
Out
put
V
o
lt
age H V
out
H(V
)
3.98
3.99
4.00
4.01
4.02
4.03
4.04
4.05
4.06
-50
-25
0
25
50
75
100
Temperature Topt
Out
put
V
o
l
t
age L V
out
L(V
)
(
C)
(
C)
(
C)
(
C)
0
10
20
30
40
50
60
70
80
90
-50
-25
0
25
50
75
100
Temperature Topt
Supply Current H IssH(
A)
(
C)
(
C)
R1163x
11
R1163X281X ECO=H Vin=3.8V
R1163X281X ECO=L Vin=3.8V
R1163X401X ECO=H Vin=5.0V
R1163X401X ECO=L Vin=5.0V
6) Standby Current vs. Input Voltage
0
1
2
3
4
5
6
7
8
9
10
-50
-25
0
25
50
75
100
Temperature Topt
S
uppl
y
Current
I
S
S
[
A
]
0
1
2
3
4
5
6
7
8
9
10
-50
-25
0
25
50
75
100
Temperature Topt
S
uppl
y
Current
I
SS
[A]
0
10
20
30
40
50
60
70
80
90
-50
-25
0
25
50
75
100
Temperature Topt
S
uppl
y
Current
H I
s
s
H
(
A
)
(
C)
(
C)
0
10
20
30
40
50
60
70
80
90
-50
-25
0
25
50
75
100
Temperature Topt
S
uppl
y
Current
H I
s
s
H
(
A
)
(
C) (C)
0
0.5
1
1.5
2
2.5
0
1
2
3
4
5
6
Input Voltage VIN[V]
S
t
andby
Current
I
S
TB
[
A
]
Topt=85
Topt=25
Topt=-40
R1163x
12
6) Reverse Current vs. Output Voltage
Vin=1V Vin=0V
8) Dropout Voltage vs. Output Current
R1163X151X ECO=H
R1163X151X ECO=L
R1163X161X ECO=H
R1163X161X ECO=L
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
D
r
opout V
o
ltage L V
d
if_L(V
)
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
lt
age L V
d
if
_L(V
)
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age H V
d
i
f
_H(V
)
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age L V
d
i
f
_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
0
0.002
0.004
0.006
0.008
0.01
0.012
0.014
0.016
0.018
0.02
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
Output Voltage V
OUT
[V]
IR
EV1
[A]
Topt=85
Topt=25
Topt=-40
0
0.2
0.4
0.6
0.8
1
1.2
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
Output Voltage V
OUT
[V]
IR
EV3
[A]
Topt=85
Topt=25
Topt=-40
R1163x
13
R1163X171X ECO=H
R1163X171X ECO=L
R1163X181X ECO=H
R1163X181X ECO=L
R1163X211X ECO=H
R1163X211X ECO=L
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dr
opout
Vol
t
a
ge H Vdi
f
_H(
V
)
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age L V
d
i
f
_L(V
)
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age H V
d
i
f
_H(V
)
85
25
-40
0
0.1
0.2
0.3
0.4
0.5
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age L V
d
i
f
_L(V
)
85
25
-40
0
0.1
0.2
0.3
0.4
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age H V
d
i
f
_H(V
)
85
25
-40
0
0.1
0.2
0.3
0.4
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age L V
d
i
f
_L(V
)
85
25
-40
R1163x
14
R1163X281X ECO=H
R1163X281X ECO=L
R1163X401X ECO=H
R1163X401X ECO=L
9) Dropout Voltage vs. Set Output Voltage
R1163X ECO=H
R1163X ECO=L
0
0.05
0.1
0.15
0.2
0.25
0.3
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age H V
d
i
f
_H(V
)
85
25
-40
0
0.05
0.1
0.15
0.2
0.25
0.3
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age L V
d
i
f
_L(V
)
85
25
-40
0
0.05
0.1
0.15
0.2
0.25
0.3
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age H V
d
i
f
_H(V
)
85
25
-40
0
0.05
0.1
0.15
0.2
0.25
0.3
0
25
50
75
100
125
150
Output Current Iout(mA)
Dropout
V
o
l
t
age L V
d
i
f
_L(V
)
85
25
-40
0.00
0.10
0.20
0.30
0.40
0.50
1.5
2
2.5
3
3.5
4
Set Output Voltage VREG(V)
Dropout
V
o
l
t
age H V
d
i
f
_H(V
)
IOUT=10mA
30mA
50mA
100mA
150mA
0.00
0.10
0.20
0.30
0.40
0.50
1.5
2
2.5
3
3.5
4
Set Output Voltage VREG(V)
Dropout
V
o
l
t
age L V
d
i
f
_L(V
)
IOUT=10mA
30mA
50mA
100mA
150mA
R1163x
15
10) Ripple Rejection vs. Input Bias Voltage
R1163X281X ECO=H, Cin=none, Cout=0.47uF, Iout=1mA Ripple=0.2Vp-p
R1163X281X ECO=H, Cin=none, Cout=0.47uF, Iout=1mA Rip-
ple=0.5Vp-p
R1162X281X ECO=H, Cin=none, Cout=0.47uF
Iout=30mA Ripple=0.2Vp-p
R1162X281X ECO=H, Cin=none, Cout=0.47uF, Iout=30mA Rip-
ple=0.5Vp-p
R1163X281X ECO=H, Cin=none, Cout=0.47uF, Iout=50mA Rip-
ple=0.2Vp-p
R1163X281X ECO=H, Cin=none, Cout=0.47uF, Iout=50mA Rip-
ple=0.5Vp-p
0
10
20
30
40
50
60
70
80
90
2.9
3
3.1
3.2
3.3
Input Voltage Vin(V)
Ri
ppl
e Rej
e
c
t
i
on RR(dB
)
f=1kHz
f=10kHz
f=100kHz
0
10
20
30
40
50
60
70
80
90
2.9
3
3.1
3.2
3.3
Input Voltage Vin(V)
Ri
ppl
e Rej
e
c
t
i
on RR(dB
)
f=1kHz
f=10kHz
f=100kHz
0
10
20
30
40
50
60
70
80
90
2.9
3
3.1
3.2
3.3
Input Voltage Vin(V)
Ri
ppl
e Rej
e
c
t
i
on RR(dB
)
f=1kHz
f=10kHz
f=100kHz
0
10
20
30
40
50
60
70
80
90
2.9
3
3.1
3.2
3.3
Input Voltage Vin(V)
Ri
ppl
e Rej
e
c
t
i
on RR(dB
)
f=1kHz
f=10kHz
f=100kHz
0
10
20
30
40
50
60
70
80
90
2.9
3
3.1
3.2
3.3
Input Voltage Vin(V)
Ri
ppl
e Rej
e
c
t
i
on RR(dB
)
f=1kHz
f=10kHz
f=100kHz
0
10
20
30
40
50
60
70
80
90
2.9
3
3.1
3.2
3.3
Input Voltage Vin(V)
Ri
ppl
e Rej
e
c
t
i
on RR(dB
)
f=1kHz
f=10kHz
f=100kHz
R1163x
16
11) Ripple Rejection vs. Frequency(
Cin=none)
R1163X151X ECO=H Cout=0.47uF VIN=2.5VDC+0.2Vp-p
R1163X151X ECO=L Cout=0.47uF VIN=2.5VDC+0.2Vp-p
R1163X281X ECO=H Cout=0.47uF VIN=3.8VDC+0.2Vp-p
R1163X281X ECO=L Cout=0.47uF VIN=3.8VDC+0.2Vp-p
R1163X401X ECO=H Cout=0.47uF VIN=5.0VDC+0.2Vp-p
R1163X401X ECO=L Cout=0.47uF VIN=5.0VDC+0.2Vp-p
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency (kHz)
Ri
ppl
e Rej
e
c
t
i
on RR_H(dB
)
Iout=1mA
Iout=30mA
Iout=50mA
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ri
ppl
e Rej
e
c
t
i
on RR_L(dB
)
Iout=1mA
Iout=30mA
Iout=50mA
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ri
ppl
e Rej
e
c
t
i
on RR_H(dB
)
Iout=1mA
Iout=30mA
Iout=50mA
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ri
ppl
e Rej
e
c
t
i
on RR_L(dB
)
Iout=1mA
Iout=30mA
Iout=50mA
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ri
ppl
e Rej
e
c
t
i
on RR_H(dB
)
Iout=1mA
Iout=30mA
Iout=50mA
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
Ri
ppl
e Rej
e
c
t
i
on RR_L(dB
)
Iout=1mA
Iout=30mA
Iout=50mA
R1163x
17
12) Input Transient Response
R1163X151X ECO=H, Cin=none, Cout=0.47uF, Iout=30mA
R1163X151X ECO=L, Cin=none, Cout=0.47uF, Iout=10mA
1.46
1.48
1.5
1.52
1.54
1.56
1.58
0
10 20 30 40 50 60 70 80 90 100
Time t[s]
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-2
-1
0
1
2
3
4
I
nput V
o
ltage V
IN
[V]
0.5
1
1.5
2
2.5
3
3.5
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
Time t[ms]
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-2
-1
0
1
2
3
4
I
nput V
o
ltage V
IN
[V]
R1163X151X ECO=L, Cin=none, Cout=1uF, Iout=10mA
R1163X281X ECO=H, Cin=none, Cout=1uF, Iout=30mA
0.5
1
1.5
2
2.5
3
3.5
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
Time t[ms]
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-2
-1
0
1
2
3
4
I
nput V
o
ltage V
IN
[V]
2.76
2.78
2.8
2.82
2.84
2.86
2.88
0
10
20
30
40
50
60
70
80
90 100
Time t[us]
O
u
tput V
o
ltage V
OUT
[V]
0
1
2
3
4
5
6
I
nput V
o
ltage V
IN
[V]
R1163X281X ECO=H, Cin=none, Cout=1uF, Iout=10mA
2
2.5
3
3.5
4
4.5
5
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
Time t[ms]
O
u
tput V
o
ltage V
OUT
[
V]
0
1
2
3
4
5
6
I
nput V
o
ltage V
IN
[V]
Input Voltage
Output Voltage
Input Voltage
Output Voltage
Output Voltage
Output Voltage
Input Voltage
Input Voltage
Input Voltage
Output Voltage
R1163x
18
13) Load Transient Response
R1163X151X ECO=H,
Vin=2.5V, Cin=1uF
Cout=0.47uF
R1163X151X ECO=H, Vin=2.5V, Cin=1uF
Cout=1.0uF
R1163X151X ECO=H, Vin=2.5V, Cin=1uF
Cout=0.47uF
R1163X151X ECO=H, Vin=2.5V, Cin=1uF
Cout=1uF
R1163X151X ECO=L, Vin=2.5V, Cin=1uF
Cout=0.47uF
R1163X151X ECO=L, Vin=3.8V, Cin=1uF
Cout=1uF
1.3
1.4
1.5
1.6
1.7
1.8
1.9
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
Time t[ms]
Out
put
V
o
l
t
age V
OU
T
[V]
-40
-30
-20
-10
0
10
20
Out
put
Current
I
OU
T
[mA]
Output Voltage
Output Current
1.3
1.4
1.5
1.6
1.7
1.8
1.9
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
O
UT[
V
]
-150
-100
-50
0
50
100
150
Out
put
Current
I
O
UT[
m
A
]
1.3
1.4
1.5
1.6
1.7
1.8
1.9
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
lt
age V
OU
T
[V]
-150
-100
-50
0
50
100
150
Out
put
Current
I
OU
T
[mA]
1.3
1.4
1.5
1.6
1.7
1.8
1.9
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
O
UT[
V
]
-120
-90
-60
-30
0
30
60
Out
put
Current
I
O
UT[
m
A
]
1.3
1.4
1.5
1.6
1.7
1.8
1.9
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
O
UT[
V
]
-120
-90
-60
-30
0
30
60
Out
put
Current
I
O
UT[
m
A
]
Output Current
Output Current
Output Current
Output Current
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Current
Output Voltage
1.3
1.4
1.5
1.6
1.7
1.8
1.9
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Time t[ms]
Out
put
V
o
l
t
age V
OU
T
[V]
-40
-30
-20
-10
0
10
20
Out
put
Current
I
OU
T[
mA]
R1163x
19
R1163X281X ECO=H, Vin=3.8V, Cin=1uF
Cout=0.47uF
R1163X281X ECO=H, Vin=3.8V, Cin=1uF
Cout=1uF
R1163X281X ECO=H, Vin=3.8V, Cin=1uF
Cout=0.47uF
R1163X281X ECO=H, Vin=3.8V, Cin=1uF
Cout=1uF
R1163X281X ECO=L, Vin=3.8V, Cin=1uF
Cout=0.47uF
R1163X281X ECO=L, Vin=3.8V, Cin=1uF
Cout=1uF
2.6
2.7
2.8
2.9
3
3.1
3.2
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
O
UT[
V
]
-150
-100
-50
0
50
100
150
Out
put
Current
I
O
UT[
m
A
]
2.6
2.7
2.8
2.9
3
3.1
3.2
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
O
UT[
V
]
-150
-100
-50
0
50
100
150
Out
put
Current
I
O
UT[
m
A
]
Output Current
Output Voltage
Output Voltage
Output Current
2.6
2.7
2.8
2.9
3
3.1
3.2
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
OU
T[
V]
-120
-90
-60
-30
0
30
60
Out
put
Current
I
OU
T
[mA]
2.6
2.7
2.8
2.9
3
3.1
3.2
0
2
4
6
8
10 12 14 16 18 20
Time t[s]
Out
put
V
o
l
t
age V
OU
T
[V]
-120
-90
-60
-30
0
30
60
Out
put
Current
I
OU
T
[mA]
2.4
2.6
2.8
3
3.2
3.4
3.6
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
Time t[ms]
Out
put
V
o
l
t
age V
O
UT[
V
]
-40
-30
-20
-10
0
10
20
Out
put
Current
I
O
UT[
m
A
]
2.4
2.6
2.8
3
3.2
3.4
3.6
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Time t[ms]
Out
put
V
o
l
t
age V
O
UT[
V
]
-40
-30
-20
-10
0
10
20
Out
put
Current
I
O
UT[
m
A
]
Output Current
Output Voltage
Output Voltage
Output Current
Output Voltage
Output Voltage
Output Current
Output Current
R1163x
20
14) Turn on speed with CE pin
R1163X151X ECO=H, Vin=2.5V, Cin=1uF, Cout=0.47uF
Iout=0mA
R1163X151X ECO=L, Vin=2.5V, Cin=1uF, Cout=0.47uF
Iout=0mA
-5
-4
-3
-2
-1
0
1
2
3
-8
-4
0
4
8
12
16
20
24
28
32
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
O
u
tput V
o
ltage V
OUT
[V]
-5
-4
-3
-2
-1
0
1
2
3
-40
-20
0
20
40
60
80
100
120
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
O
u
tput V
o
ltage V
OUT
[V]
R1163X151X ECO=H, Vin=2.5V, Cin=1uF, Cout=0.47uF
Iout=30mA
R1163X151X ECO=L, Vin=2.5V, Cin=1uF, Cout=0.47uF
Iout=30mA
-5
-4
-3
-2
-1
0
1
2
3
-8
-4
0
4
8
12
16
20
24
28
32
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
O
u
tput V
o
ltage V
OUT
[V]
-5
-4
-3
-2
-1
0
1
2
3
-0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
O
u
tput V
o
ltage V
OUT
[V]
R1163X151X ECO=H Vin=2.5V, Cin=1uF, Cout=0.47uF
Iout=150mA
R1163X151X ECO=L Vin=2.5V, Cin=1uF, Cout=0.47uF
Iout=150mA
-5
-4
-3
-2
-1
0
1
2
3
-8
-4
0
4
8
12
16
20
24
28
32
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-5
-4
-3
-2
-1
0
1
2
3
-0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
O
u
tput V
o
ltage V
OUT
[V]
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
R1163x
21
R1163X281X ECO=H, Vin=3.8V, Cin=1uF
Cout=0.47uF, Iout=0mA
R1163X281X ECO=L, Vin=3.8V, Cin=1uF
Cout=0.47uF, Iout=0mA
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20
30
40
50
60
70
80
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20
30
40
50
60
70
80
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
O
u
tput V
o
ltage V
OUT
[V]
R1163X281X ECO=H, Vin=3.8V, Cin=1uF
Cout=0.47uF, Iout=30mA
R1163X281X ECO=L, Vin=3.8V, Cin=1uF
Cout=0.47uF, Iout=30mA
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20
30
40
50
60
70
80
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
O
u
tput V
o
ltage V
OUT
[V]
-10
-8
-6
-4
-2
0
2
4
6
-0.1 -0
0 0.04 0.08 0.12 0.16 0.2 0.24 0.28 0.32
Time t[ms]
CE
I
nput
V
o
l
t
age V
CE
[V]
-1
0
1
2
3
4
5
6
7
Out
put
V
o
l
t
age V
OU
T
[V]
R1163X281X ECO=H Vin=3.8V, Cin=1uF
Cout=0.47uF, Iout=150mA
R1163X281X ECO=L Vin=3.8V, Cin=1uF
Cout=0.47uF, Iout=150mA
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20 30 40
50 60
70 80
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
O
u
tput V
o
ltage V
OUT
[V]
-10
-8
-6
-4
-2
0
2
4
6
-0.08 -0.04
0
0.04
0.08
0.12
0.16
0.2
0.24
0.28
0.32
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
O
u
tput V
o
ltage V
OUT
[V]
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
R1163x
22
R1163X401X ECO=H, Vin=5.0V, Cin=1uF
Cout=0.47uF, Iout=0mA
R1163X401X ECO=L, Vin=5.0V, Cin=1uF
Cout=0.47uF, Iout=0mA
R1163X401X ECO=H, Vin=5.0V, Cin=1uF
Cout=0.47uF, Iout=30mA
R1163X401X ECO=L, Vin=5.0V, Cin=1uF
Cout=0.47uF, Iout=30mA
R1163X401X ECO=H Vin=5.0V, Cin=1uF
Cout=0.47uF, Iout=150mA
R1163X401X ECO=L Vin=5.0V, Cin=1uF
Cout=0.47uF, Iout=150mA
-12
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20
30
40
50
60
70
80
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
O
u
tput V
o
ltage V
OUT[
V]
-12
-10
-8
-6
-4
-2
0
2
4
6
-8
-4
0
4
8
12
16
20
24
28
32
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
O
u
tput V
o
ltage V
OUT
[V]
-12
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20
30
40
50
60
70
80
Time t[s]
CE
I
nput V
o
ltage V
CE
[
V]
-1
0
1
2
3
4
5
6
7
8
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-12
-10
-8
-6
-4
-2
0
2
4
6
-0.08 -0.04
0
0.04
0.08
0.12
0.16
0.2
0.24
0.28
0.32
Time t[ms]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
O
u
tput V
o
ltage V
OUT
[V]
-12
-10
-8
-6
-4
-2
0
2
4
6
-20 -10
0
10
20
30
40
50
60
70
80
Time t[s]
CE
I
nput V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
Ou
t
p
u
t
Vo
l
t
a
g
e
V
OUT
[V]
-12
-10
-8
-6
-4
-2
0
2
4
6
-0.08
-0.04
0
0.04
0.08
0.12
0.16
0.2
0.24
0.28
0.32
Time t[ms]
CE
input V
o
ltage V
CE
[V]
-1
0
1
2
3
4
5
6
7
8
O
u
tput V
o
ltage V
OUT
[V]
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
R1163x
23
15) Turn off speed with CE pin
R1163X151XD Vin=2.5V, Cin=1uF, Cout=0.47uF
R1163X281XD Vin=3.8V, Cin=1uF, Cout=0.47uF
R1163X401XD Vin=5.0V, Cin=1uF, Cout=0.47uF
-5
-4
-3
-2
-1
0
1
2
3
-0.08
-0.04
0
0.04
0.08
0.12
0.16
0.2
0.24
0.28
0.32
Time t[ms]
CE
I
nput
V
o
l
t
age V
CE
[V]
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
Out
put
V
o
l
t
age V
OU
T
[V]
-5
-4
-3
-2
-1
0
1
2
3
4
-0.08 -0.04
0
0.04
0.08
0.12
0.16
0.2
0.24
0.28
0.32
Time t[ms]
CE
I
nput
V
o
lt
age V
C
E
[
V
]
-1
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Out
put
V
o
lt
age V
O
UT
[
V
]
I
OUT
=0mA
I
OUT
=30mA
I
OUT
=150mA
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
-0.1 -0
0 0.04 0.08 0.12 0.16 0.2 0.24 0.28 0.32
Time t[ms]
CE
I
nput
V
o
l
t
age V
C
E
[
V
]
-1
0
1
2
3
4
5
6
7
8
9
10
11
Out
put
V
o
l
t
age V
OU
T
[V]
I
OUT
=0mA
I
OUT
=30mA
I
OUT
=150mA
I
OUT
=0mA
I
OUT
=30mA
I
OUT
=150mA
R1163x
24
16) Output Voltage at Mode alternative point
R1163X151X Vin=2.5V, Cin= 1.0uF, Cout= 0.47uF R1163X281X Vin=3.8V, Cin= 1.0uF, Cout= 0.47uF
1.48
1.5
1.52
1 54
1 56
1 58
1 6
1 62
1 64
1 66
1 68
1 7
1 72
1 74
1 76
0
0.1
0.2
0.3
0.4
0.5
0.6 0.7 0.8 0.9
Time t[ms]
Ou
tp
u
t
V
o
lta
ge
VOUT[
V
]
0
1
2
3
EC
O
I
n
p
u
t V
o
lt
a
g
e
VEC
O
[
V
]
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=100mA
IOUT=150mA
1.52
1.48
1.50
1.50
1.52
1.52
1.48
1.52
1.48
1.50
1.48
1.50
2.78
2.80
2.82
2 84
2 86
2 88
2 90
2 92
2 94
2 96
2 98
3 00
3 02
3 04
3 06
0
0.1
0.2
0.3
0.4
0.5 0.6 0.7 0.8 0.9
Time t[ms]
Ou
t
p
ut
V
o
l
t
a
g
e
VOUT[
V
]
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
0
1
2
3
4
E
C
O
I
npu
t V
o
lt
a
g
e
VEC
O
[
V
]
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=100mA
IOUT=150mA
2.78
2.80
2.82
2.80
2.82
2.80
2.82
2.78
2.82
2.78
2.78
2.80
2.78
2.79
2.8
2.81
2.82
2.83
2.84
2.85
2.86
-10
0
10 20 30 40 50 60 70 80 90
Time t[ms]
Out
put
V
o
lt
age V
O
UT
[
V
]
-4
-3
-2
-1
0
1
2
3
4
E
C
O I
nput
V
o
lt
age V
E
CO[
V
]
1.48
1.49
1.5
1.51
1.52
1.53
1.54
1.55
1.56
-10 0
10 20 30 40 50 60 70 80 90
Time t[ms]
Out
put
V
o
l
t
age V
O
UT[
V
]
-5
-4
-3
-2
-1
0
1
2
3
E
C
O I
nput
V
o
l
t
age V
E
CO[
V
]
Iout=0mA
Iout=0mA
R1163x
25
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) 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 40V (Avg.) are marked as the hatched area in the graph.
<Test conditions>
(1) Frequency band: 10Hz to 2MHz
R1163X151X ECO=H, Vin=2.0V to 6.0V, Cin=1uF
Cout=0.47uF
R1163X151X ECO=L Vin=2.0V to 6.0V, Cin=1uF
Cout=0.47uF
R1163X281X ECO=H, Vin=3.1V to 6.0V, Cin=1uF
Cout=0.47uF
R1163X281X ECO=L Vin=3.1V to 6.0V, Cin=1uF
Cout=0.47uF
0.01
0.1
1
10
100
0
50
100
150
Load Current I
OUT
[mA]
ESR
[
]
0.01
0.1
1
10
100
0
50
100
150
Load Current I
OUT
[mA]
ESR
[
]
0.01
0.1
1
10
100
0
50
100
150
Load Current I
OUT
[mA]
ESR [
]
Topt=85
C
Topt=25
C
Topt=-40
C
0.01
0.1
1
10
100
0
50
100
150
Load Current I
OUT
[mA]
ESR
[
]
Topt=85
C
Topt=25
C
Topt=-40
C
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