150mA 2ch LDO REGULATORS
R5325X SERIES
1
R5325X_E/2005/09/01
OUTLINE
The R5325X Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current
( Typ. 3
A), low dropout, and fast transient response. 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 due to built-in transistor with low ON resistance, and a chip enable
function prolongs the battery life of each system. The line transient response and load transient response of the
R5325X Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication
equipment.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-6 and PLP1820-6 package, 2ch LDO regulators are included in each, high density mounting of the ICs on
boards is possible.
FEATURES
Low Supply Current .................................. Typ. 3A (VR1, VR2)
Standby Mode ........................................... Typ. 0.1A (VR1, VR2)
Low Dropout Voltage ................................. Typ. 0.2V (I
OUT
=150mA Output Voltage=3.0V Type)
High Ripple Rejection ................................ Typ. 50dB (f=1kHz)
Low Temperature-Drift Coefficient of
Output Voltage.......................................... Typ. 100ppm/C
Excellent Line Regulation .......................... Typ. 0.02%/V
High Output Voltage Accuracy ................... 1.0% (V
OUT
1.5V)
Small Packages ........................................ SOT-23-6/PLP1820-6
Output Voltage.......................................... Stepwise setting with a step of 0.1V in the range of 1.2V to 4.0V is
possible
Built-in chip enable circuit (A/B: active high)
Built-in fold-back protection circuit ........... Typ. 50mA (Current at short mode)
Ceramic Capacitor is recommended. (0.1F or more)
Input Voltage 1.5V to 6.0V
APPLICATIONS
Power source for handheld communication equipment.
Power source for electrical appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipment.
R5325X
2
BLOCK DIAGRAMS
R5325XxxxA (Pin out is applied to SOT23-6)
6
2
5
V
OUT1
GND
CE1
V
DD
+
-
Vref
1
Current Limit
4
V
OUT2
CE2
3
+
-
Vref
Current Limit
Error
Amp.
R1_1
R2_1
R1_2
R2_2
Error
Amp.
R5325NxxxB (Pin out is applied to SOT23-6)
6
2
5
V
OUT1
GND
CE1
V
DD
+
-
Vref
1
Current Limit
4
V
OUT2
CE2
3
+
-
Vref
Current Limit
R1_1
R2_1
R1_2
R2_2
Error
Amp.
Error
Amp.
R5325X
3
SELECTION GUIDE
The output voltage, mask option, and the taping type for the ICs can be selected at the user's request. The
selection can be made with designating the part number as shown below;
R5325Xxxxx-xx
Part Number
a b c d
Code
Contents
a
Designation of Package Type:
N: SOT23-6
K: PLP1820-6
b
Setting combination of 2ch Output Voltage (V
OUT
): Serial Number for Voltage
Setting, Stepwise setting with a step of 0.1V in the range of 1.2V to 4.0V is
possible for each channel.
c
Designation of Mask Option:
A version: without auto discharge function at OFF state.
B version: with auto discharge function at OFF state.
d
Designation of Taping Type:
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
PIN CONFIGURATION
SOT-23-6
6
4
5
CE1
CE2
GND
1
2
3
V
OUT1
V
DD
(mark side)
V
OUT2
R5325X
4
PLP1820-6
PIN DESCRIPTION
SOT23-6
Pin No.
Symbol
Description
1
V
OUT1
Output Pin 1
2
V
DD
Input Pin
3
V
OUT2
Output Pin 2
4
CE2
Chip Enable Pin 2
5
GND
Ground Pin
6
CE1
Chip Enable Pin 1
PLP1820-6
Pin No.
Symbol
Description
1
V
OUT2
Output Pin 2
2
V
DD
Input Pin
3
V
OUT1
Output Pin 1
4
CE1
Chip Enable Pin 1
5
GND
Ground Pin
6
CE2
Chip Enable Pin 2
MARK SIDE
CE2
GND
CE1
VOUT2
VDD
VOUT1
1
2
3
4
5
6
R5325X
5
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
IN
Input Voltage
6.5
V
V
CE
Input Voltage (CE Pin)
6.5
V
V
OUT
Output Voltage
-0.3~V
IN
+0.3
V
I
OUT1
Output Current 1
200
mA
I
OUT2
Output Current 2
200
mA
Power Dissipation (SOT-23-6)
250
mW
P
D
Power Dissipation (PLP1820-6)*Note1
460
mW
Topt
Operating Temperature Range
-40~85
C
Tstg
Storage Temperature Range
-55~125
C
Note1: Mounted on board. Conditions: Board material FR4, Board dimensions 40*40*1.6(mm)
Metal rate: 50%(2-layer) without thermal via holes, wind velocity=0m/s
R5325X
6
ELECTRICAL CHARACTERISTICS
R5325XxxxA/B
Topt=25C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
OUT
Output Voltage*1)
V
IN
=Set V
OUT
+1V
1mA
I
OUT
30mA
V
OUT
0.99
(-15mV)
V
OUT
1.01
(+15mV)
V
I
OUT
Output Current
V
IN
-V
OUT
=1.0V
150
mA
V
OUT
/
I
OUT
Load Regulation
V
IN
=Set V
OUT
+1V
1mA
I
OUT
150mA
30
80
mV
V
DIF
Dropout Voltage
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
I
SS
Supply Current
V
IN
=Set V
OUT
+1V
3
7
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
Set V
OUT
+0.5V
V
IN
6V
I
OUT
=30mA
0.1
0.3
%/V
RR
Ripple Rejection
Ripple 0.5Vp-p V
IN
=Set
V
OUT
+1V
I
OUT
=30mA
(In case that V
OUT
1.7V,
V
IN
=Set V
OUT
+1.2V)
50
*Note1
dB
V
IN
Input Voltage
1.5
6.0
V
V
OUT
/
T
Output Voltage
Temperature Coefficient
I
OUT
=30mA
-40C
Topt
85C
100
ppm
/C
Ilim
Short Current Limit
V
OUT
=0V
50
mA
R
PD
CE Pull-down Constant
Current
0.15
0.30
0.55
A
V
CEH
CE Input Voltage "H"
1.0
6.0
V
V
CEL
CE Input Voltage "L"
0.0
0.4
V
en
Output Noise
BW=10Hz to 100kHz
30
Vrms
R
LOW
Low Output Nch Tr. ON
Resistance (of B version)
V
CE
=0V
50
Note1: f=1kHz
*1 Tolerance is
15mV, in case Set V
OUT
1.5V
R5325X
7
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt=25C
Dropout Voltage
V
DIF
(V)
Output Voltage
V
OUT
(V)
Condition
Typ.
Max.
1.2
V
OUT
<1.3
0.55
0.85
1.3
V
OUT
<1.4
0.48
0.74
1.4
V
OUT
<1.5
0.43
0.68
1.5
V
OUT
<2.0 0.40
0.59
2.0
V
OUT
<2.8 0.27
0.39
2.8
V
OUT
<4.0 0.21
0.28
V
OUT
=4.0
I
OUT
=150mA
0.17 0.23
TEST CIRCUITS
Fig.1 Standard test Circuit
V
V
I
OUT
2
*C1=C2=C3=Ceramic 0.1
F
R5325
SERIES
C3
C2
C1
CE2
VDD
CE1
OUT2
V
GND
OUT1
V
V
OUT1
V
OUT
2
I
OUT1
R5325X
8
A
I
SS
C1
C3
C2
GND
CE1
CE2
V
OUT1
V
DD
R5325
SERIES
V
OUT2
*C1=C2=C3=Ceramic 0.1
F
Fig.2 Supply Current Test Circuit
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
Pulse
Generator
C3
C2
I
OUT
1
I
OUT
2
GND
CE1
CE2
V
OUT1
R5325
SERIES
PG
*
C2=C3=Ceramic 0.1
F
V
OUT2
VDD
R5325X
9
C1
C3
C2
I
OUT
2 b
GND
CE1
CE2
V
OUT1
VDD
R5325
SERIES
V
OUT2
I
OUT
1a
I
OUT
*C1=C2=C3=Ceramic 0.1
F
I
OUT
2a
Fig.4 Load Transient Response Test Circuit
TYPICAL APPLICATION
C1
C3
C2
GND
CE1
CE2
V
OUT1
V
DD
R5325
SERIES
V
OUT2
IN
OUT1
OUT2
(External Components) Output Capacitor; Ceramic Type
R5325X
10
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (Topt=25C)
V
OUT
=1.2V
V
OUT
=2.8V
V
OUT
=4.0V
2) Output Voltage vs. Input Voltage (Topt=25C)
V
OUT
=1.2V
V
OUT
=2.8V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
50 100 150 200 250 300 350 400 450 500
Output Current I
OUT
[mA]
O
u
tput Voltage V
OU
T
[V]
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
50 100 150 200 250 300 350 400 450 500
Output Current I
OUT
[mA]
O
u
tput Voltage V
OUT
[V]
V
IN
=2.2V
V
IN
=1.5V
V
IN
=3.8V
V
IN
=1.8V
V
IN
=3.2V
V
IN
=3.1V
V
IN
=4.8V
V
IN
=3.5V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
50 100 150 200 250 300 350 400 450 500
Output Current I
OUT
[mA]
O
u
tput Voltage V
OU
T
[V]
V
IN
=4.3V
V
IN
=5.0V
V
IN
=6.0V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
1
2
3
4
5
6
Input Voltage V
IN
[V]
Out
put
V
o
l
t
age V
OU
T
[V]
Iout=1mA
Iout=30mA
Iout=100mA
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
1
2
3
4
5
6
Input Voltage V
IN
[V]
Output Voltage V
OU
T
[V]
Iout=1mA
Iout=30mA
Iout=100mA
R5325X
11
V
OUT
=4.0V
3) Dropout Voltage vs. Output Current
V
OUT
=1.2V
V
OUT
=2.8V
V
OUT
=4.0V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
1
2
3
4
5
6
Input Voltage V
IN
[V]
O
u
tput V
o
ltage V
OUT
[V]
Iout=1mA
Iout=30mA
Iout=100mA
0
100
200
300
400
500
600
700
800
0
25
50
75
100
125
150
Output Current I
OUT
[mA]
Dropout
V
o
lt
age V
DIF
[mV]
85
C
25
C
-40
C
0
50
100
150
200
250
300
0
25
50
75
100
125
150
Output Current I
OUT
[mA]
Dropout
V
o
lt
age V
DIF
[mV]
85
C
25
C
-40
C
0
50
100
150
200
250
0
25
50
75
100
125
150
Output Current I
OUT
[mA]
D
r
opout
V
o
l
t
age V
DIF
[mV]
85
C
25
C
-40
C
R5325X
12
4)
Output Voltage vs. Temperature (I
OUT
=30mA)
V
OUT
=1.2V, V
IN
=2.2V
V
OUT
=2.8V, V
IN
=3.8V
V
OUT
=4.0V, V
IN
=5.0V
5) Supply Current vs. Input Voltage (Topt=25C)
V
OUT
=1.2V
V
OUT
=2.8V
1.16
1.17
1.18
1.19
1.2
1.21
1.22
1.23
-50
-25
0
25
50
75
100
Temperature Topt[
C]
Output V
o
l
t
age V
OU
T
[V
]
2.6
2.65
2.7
2.75
2.8
2.85
2.9
2.95
3
-50
-25
0
25
50
75
100
Temperature Topt[
C]
Out
put
V
o
lt
age V
OU
T
[V]
3.8
3.85
3.9
3.95
4
4.05
4.1
4.15
4.2
-50
-25
0
25
50
75
100
Temperature Topt[
C]
Out
put
V
o
lt
age V
OU
T
[V]
0
1
2
3
4
5
6
7
8
9
10
1.2
2
2.8
3.6
4.4
5.2
6
Input Voltage V
IN
[V]
S
uppl
y C
u
r
r
ent
I
SS
[
A]
0
1
2
3
4
5
6
7
8
9
10
2.8
3.6
4.4
5.2
6
Input Voltage V
IN
[V]
S
uppl
y C
u
rrent I
SS
[
A
]
R5325X
13
V
OUT
=4.0V
6) Supply Current vs. Temperature
V
OUT
=1.2V, V
IN
=2.2V
V
OUT
=2.8V V
IN
=3.8V
V
OUT
=4.0V, V
IN
=5.0V
0
1
2
3
4
5
6
7
8
9
10
4
4.5
5
5.5
6
Input Voltage V
IN
[V]
Suppl
y
Cur
r
ent I
SS
[A]
0
1
2
3
4
5
6
7
8
9
10
-50
-25
0
25
50
75
100
Temperature Topt[
C]
S
uppl
y C
u
rrent I
SS
[A
]
0
1
2
3
4
5
6
7
8
9
10
-50
-25
0
25
50
75
100
Temperature Topt[
C]
S
upply
Cur
r
ent
I
SS
[A
]
0
1
2
3
4
5
6
7
8
9
10
-50
-25
0
25
50
75
100
Temperature Topt[
C]
S
uppl
y C
u
rrent I
SS
[A
]
R5325X
14
7) Dropout Voltage vs. Set Output Voltage (Topt=25C)
8) Ripple Rejection vs. Frequency (Topt=25C, C
OUT
=0.1
F)
V
OUT
=1.2V, V
IN
=2.2V
DC
+0.2Vp-p
V
OUT
=2.8V, V
IN
=3.8V
DC
+0.2Vp-p
V
OUT
=4.0V, V
IN
=5.0V
DC
+0.2Vp-p
0
100
200
300
400
500
600
700
1
1.5
2
2.5
3
3.5
4
Set Output Voltage V
REG
[V]
Dropout
V
o
lt
age V
DI
F
[mV]
1mA
10mA
30mA
100mA
150mA
0
10
20
30
40
50
60
70
80
0.1
1
10
100
Frequency f[kHz]
Rip
p
l
e
Re
je
c
t
io
n
RR[d
B
]
IOUT=1mA
IOUT=30mA
IOUT=100mA
0
10
20
30
40
50
60
70
80
0.1
1
10
100
Frequency f[kHz]
Rip
p
l
e
Re
je
c
t
io
n
RR[d
B
]
IOUT=1mA
IOUT=30mA
IOUT=100mA
0
10
20
30
40
50
60
70
80
0.1
1
10
100
Frequency f[kHz]
Rip
p
l
e
Re
je
c
t
io
n
RR[d
B
]
IOUT=1mA
IOUT=30mA
IOUT=100mA
R5325X
15
9) Ripple Rejection vs. Input Voltage (DC bias), Topt=25C, Ripple 0.2Vp-p, V
OUT
=2.8V
I
OUT
=1mA
I
OUT
=10mA
Iout=100mA
10) Input Transient Response(Cin=none, Tr=Tf=5
s, I
OUT
=30mA
V
OUT
=1.2V, C
OUT
=Ceramic 0.1
F
V
OUT
=1.2V, C
OUT
=Ceramic 1.0
F
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-10
0
10
20
30
40
50
60
70
80
90
Time T[s]
O
u
tput Voltage V
OU
T
[V]
-3
-2
-1
0
1
2
3
4
Input Voltage V
IN
[V]
0
10
20
30
40
50
60
70
80
2.90
3.00
3.10
3.20
3.30
Input Voltage V
IN
[V]
Rip
p
l
e
Re
je
ctio
n
RR[d
B
]
100Hz
1KHz
10KHz
100KHz
0
10
20
30
40
50
60
70
80
2.90
3.00
3.10
3.20
3.30
Input Voltage V
IN
[V]
Rip
p
l
e
Re
je
c
t
io
n
RR[d
B
]
100Hz
1KHz
10KHz
100KHz
0
10
20
30
40
50
60
70
80
2.90
3.00
3.10
3.20
3.30
Input Voltage V
IN
[V]
Rip
p
l
e
Re
je
c
t
io
n
RR[d
B
]
100Hz
1KHz
10KHz
100KHz
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-10
0
10
20
30
40
50
60
70
80
90
Time T[s]
Output V
o
l
t
age V
OUT
[V
]
-3
-2
-1
0
1
2
3
4
Input V
o
l
t
age V
IN
[V
]
Input Voltage
Output Voltage
Input Voltage
Output Voltage
R5325X
16
V
OUT
=2.8V, C
OUT
=Ceramic 0.1
F V
OUT
=2.8V, C
OUT
=Ceramic 1.0
F
V
OUT
=4.0V, C
OUT
=Ceramic 0.1
F
V
OUT
=4.0V, C
OUT
=Ceramic 1.0
F
11) Load Transient Response (Tr=Tf=500ns, CIN=Ceramic 0.1
F, V
IN
=3.8V, V
OUT
=2.8V)
C
OUT
=0.1
F
C
OUT
=0.1
F
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
-10 0
10 20 30 40 50 60 70 80 90
Time T[s]
O
u
tput Vol
t
age V
OU
T
[V]
-1
0
1
2
3
4
5
6
Input Vol
t
age V
IN
[V]
Input Voltage
Output Voltage
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
-10 0 10 20 30 40 50 60 70 80 90
Time T[s]
Output Vol
t
age V
OU
T
[V]
-1
0
1
2
3
4
5
6
Input Vol
t
age V
IN
[V]
Input Voltage
Output Voltage
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
-10
0
10 20
30
40 50
60
70
80 90
Time T[s]
O
u
t
put
V
o
l
t
age V
OU
T
[V]
0
1
2
3
4
5
6
7
I
nput
V
o
l
t
age V
IN
[V]
Input Voltage
Output Voltage
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
-10
0
10 20 30 40 50 60 70 80 90
Time T[s]
Output V
o
l
t
age V
OUT
[V
]
0
1
2
3
4
5
6
7
Input V
o
l
t
age V
IN
[V
]
Input Voltage
Output Voltage
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-4
0
4
8
12 16 20 24 28 32 36
Time T[s]
O
u
tput Voltage V
OU
T
[V]
-350
-300
-250
-200
-150
-100
-50
0
50
100
150
O
u
tput Current I
OU
T
[m
A]
VR1 Output Current
VR1 Output Voltage
VR2 Output Voltage
Load Current=1mA
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-4
0
4
8
12 16 20 24 28 32 36
Time T[s]
O
u
tput Voltage V
OU
T
[V]
-350
-300
-250
-200
-150
-100
-50
0
50
100
150
O
u
tput Current I
OU
T
[m
A]
VR2 Output Current
VR1 Output Voltage
Load Current=1mA
VR2 Output Voltage
3
2.8
2.6
3
2.8
2.6
R5325X
17
C
OUT
=0.1
F C
OUT
=0.1
F
C
OUT
=1
F C
OUT
=1
F
2.2
2.5
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
-25
0
25 50 75 100 125 150 175
Time T[s]
Out
put
Volt
age V
OU
T
[V
]
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
Out
put
C
u
rrent
I
OU
T
[mA
]
VR1 Output Current
VR1 Output Voltage
VR2 Output Voltage
Load Current=1mA
2.2
2.5
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
-25
0
25 50 75 100 125 150 175
Time T[s]
O
u
tput Vol
t
age V
OU
T
[V]
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
O
u
tput Cur
r
ent I
OU
T
[mA]
VR2 Output Current
VR1 Output Voltage
Load Current =1mA
VR2 Output Voltage
3.0
2.8
2.6
3.0
2.8
2.6
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-4 0
4 8 12 16 20 24 28 32 36
Time T[s]
O
u
t
put
V
o
l
t
age V
OU
T
[V]
-350
-300
-250
-200
-150
-100
-50
0
50
100
150
O
u
t
put
C
u
r
r
ent
I
OU
T
[mA]
VR1 Output Current
VR1 Output Voltage
VR2 Output Voltage
Load Current=1mA
3.0
2.8
2.6
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-4 0
4
8 12 16 20 24 28 32 36
Time T[s]
O
u
tput Vol
t
age V
OU
T
[V]
-350
-300
-250
-200
-150
-100
-50
0
50
100
150
O
u
tput Cur
r
ent I
OU
T
[mA]
VR2 Output Current
VR1 Output Voltage
Load Current=1mA
VR2 Output Voltage
3.0
2.8
2.6
R5325X
18
C
OUT
=1
F C
OUT
=1
F
C
OUT
=2.2
F
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-20 0
20 40 60 80 100 120 140 160 180
Time T[s]
Output Vol
t
age V
OU
T
[V]
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
Output Cur
r
ent I
OU
T
[mA]
VR1 Output Current
VR1 Output Voltage
VR2 Output Voltage
Load Current=1mA
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
-25
0
25 50 75 100 125 150 175
Time T[s]
Out
put
Volt
age V
OU
T
[V
]
-400
-350
-300
-250
-200
-150
-100
-50
0
50
100
Out
put
C
urrent
I
OU
T
[mA
]
VR2 Output Current
VR1 Output Voltage
Load Current=1mA
VR2 Output Voltage
3.0
2.8
2.6
3.0
2.8
2.6
2.6
2.7
2.8
2.9
3
3.1
3.2
0
10
20
30
40
50
60
70
80
90 100
Time t[s]
O
u
tput Voltage V
OU
T
[V]
-150
-100
-50
0
50
100
150
O
u
tput Current I
OU
T
[m
A]
VR Output Current 50mA
100mA
Output Voltage
R5325X
19
12) Turn on Speed by CE signal C
IN
=Ceramic 0.1
F
V
OUT
=1.2V C
OUT
=0.1
F V
IN
=3.3V V
OUT
=1.2V C
OUT
=1
F V
IN
=3.3V I
OUT
=30mA
V
OUT
=2.8V C
OUT
=0.1
F V
IN
=3.3V I
OUT
=30mA V
OUT
=2.8V C
OUT
=1
F V
IN
=3.3V I
OUT
=30mA
V
OUT
=4.0V C
OUT
=0.1
F V
IN
=6.0V I
OUT
=30mA V
OUT
=4.0V C
OUT
=1
F V
IN
=6.0V I
OUT
=30mA
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-10
0
10
20
30
40
50
60
70
80
90
Time T[s]
Output Voltage V
OU
T
[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage V
CE
[V]
Iout=1mA
Iout=30mA
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-40
0
40 80 120 160 200 240 280 320 360
Time T[s]
Output V
o
l
t
age V
OU
T
[V
]
-4
-3
-2
-1
0
1
2
3
4
C
E
Input V
o
l
t
age V
CE
[V
]
-1
0
1
2
3
4
5
6
7
-20
0
20 40 60 80 100 120 140 160 180
Time T[s]
Output V
o
l
t
age V
OU
T
[V
]
-4
-3
-2
-1
0
1
2
3
4
C
E
Input V
o
l
t
age V
CE
[V
]
-1
0
1
2
3
4
5
6
7
-20
0
20
40
60
80 100 120 140 160 180
Time T[s]
O
u
t
put
V
o
l
t
age V
OU
T
[V]
-4
-3
-2
-1
0
1
2
3
4
C
E
I
nput
V
o
l
t
age V
CE
[V]
-2
0
2
4
6
8
10
-20
0
20
40
60
80 100 120 140 160 180
Time T[s]
Output V
o
l
t
age V
OU
T
[V
]
-9
-6
-3
0
3
6
9
C
E
Input V
o
l
t
age V
CE
[V
]
-2
0
2
4
6
8
10
-20 0
20 40 60 80 100 120 140 160 180
Time T[s]
Output V
o
l
t
age V
OU
T
[V
]
-9
-6
-3
0
3
6
9
C
E
Input V
o
l
t
age V
CE
[V
]
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
R5325X
20
13) Turn-off Speed with CE Signal C
IN
=Ceramic 0.1
F(B version)
V
OUT
=1.2V C
OUT
=0.1
F V
IN
=3.3V V
OUT
=1.2V C
OUT
=1
F V
IN
=3.3V
V
OUT
=2.8V C
OUT
=0.1
F V
IN
=3.3V
V
OUT
=2.8V C
OUT
=1
F V
IN
=3.3V
V
OUT
=4.0V C
OUT
=0.1
F V
IN
=6.0V V
OUT
=4.0V C
OUT
=1
F V
IN
=6.0V
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-10
0
10 20 30 40 50 60 70 80 90
Time T[ms]
O
u
t
put
V
o
l
t
age V
OUT
[V]
-5
-4
-3
-2
-1
0
1
2
3
4
C
E
I
nput
V
o
l
t
age V
CE
[V]
-0.4
0
0.4
0.8
1.2
1.6
2
2.4
2.8
-40
0
40
80 120 160 200 240 280 320 360
Time T[ms]
O
u
tput Voltage V
OU
T
[V]
-5
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage V
CE
[V]
Iout=30mA
Iout=1mA
Iout=30mA
Iout=1mA
-1
0
1
2
3
4
5
6
7
-20 0
20 40 60 80 100 120 140 160 180
Time T[ms]
Out
put
Volt
age V
OU
T
[V
]
-4
-3
-2
-1
0
1
2
3
4
C
E
I
nput
Volt
age V
CE
[V
]
Iout=30mA
Iout=1mA
-1
0
1
2
3
4
5
6
7
-60 0
60 120 180 240 300 360 420 480 540 600
Time T[ms]
O
u
tput Voltage V
OUT
[V]
-4
-3
-2
-1
0
1
2
3
4
CE Input Voltage V
CE
[V]
Iout=30mA
Iout=1mA
Iout=30mA
Iout=1mA
-2
0
2
4
6
8
10
-60
40
140
240
340
440
540
Time T[ms]
O
u
t
put
V
o
l
t
age V
OUT
[V]
-10
-5
0
5
C
E
I
nput
V
o
l
t
age V
CE
[V]
Iout=30mA
Iout=1mA
-2
0
2
4
6
8
10
-20
0
20 40 60 80 100 120 140 160 180
Time T[ms]
O
u
tput Vol
t
age V
OU
T
[V]
-10
-5
0
5
CE Input Vol
t
age V
CE
[V]
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
Output Voltage
R5325X
21
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 0.1F or more capacitance 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 in the typical characteristics
above. The conditions when the white noise level is under 40V (Avg.) are marked as the hatched area in the graph.
Test these ICs with as same external components as ones to be used on the PCB.
Make V
DD
and GND lines sufficient. When their impedance is high, the noise picked up or incorrect operation may
result.
Connect the capacitor with a capacitance of 1F or more between V
DD
and GND as close as possible.
Set external components, especially Output Capacitor, as close as possible to the ICs and make wiring as short as
possible.
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