NO. EA-077-0012
SOT23-6W 120mA 2ch LDO
REGULATORS
R5322N SERIES
APPLICATION MANUAL
SOT23-6W 120mA 2ch LDO REGULATORS
R5322N SERIES
1
OUTLINE
The R5322N Series are voltage regulator ICs with high output voltage accuracy, low supply current, low dropout,
and high ripple rejection by CMOS process. 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 and prolong the battery life of each system. The line transient response and load transient response of the
R5322N 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 package for these ICs is SOT-23-
6W package, and include 2ch LDO regulators each, high density mounting of the ICs on boards is possible.
FEATURES
• Ultra-Low Supply Current ................................................. TYP. 75µA (VR1,VR2)
• Standby Mode ..................................................................... TYP. 0.1µA (VR1,VR2)
• Low Dropout Voltage ......................................................... TYP. 0.15V (IOUT=100mA Output Voltage=3.0V Type)
• High Ripple Rejection ........................................................ TYP. 75dB (f=1kHz)
• Low Temperature-Drift Coefficient of Output Voltage..... TYP. ±100ppm/°C
• Excellent Line Regulation.................................................. TYP. 0.05%/V
• High Output Voltage Accuracy .......................................... ±2.0%
• Small Package .................................................................... SOT-23-6W
• Output Voltage.................................................................... Stepwise setting with a step of 0.1V in the range of 1.5V to
4.0V is possible
• Built-in chip enable circuit (A/B: active high)
• Built-in fold-back protection circuit................................... TYP. 40mA (Current at short mode)
APPLICATIONS
• Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
• Power source for electrical appliances such as cameras, VCRs and camcorders.
• Power source for battery-powered equipment.
R5322N
2
BLOCK DIAGRAM
• R5322N×××
××××××
×××A
CE1 1V
OUT1
R1-1
R2-1
6
GND
V
OUT2
5
V
DD
2
CE2 3
Current Limit
Error Amp.
Vref
-
+
R1-2
R2-2
Current Limit
Error Amp.
Vref
-
+
4
• R5322N×××
××××××
×××B
CE1 1V
OUT1
R1-1
R2-1
6
GND
V
OUT2
5
V
DD
2
CE2 3
Current Limit
Error Amp.
Vref
-
+
R1-2
R2-2
Current Limit
Error Amp.
Vref
-
+
4
R5322N
3
SELECTION GUIDE
The output voltage, mask option, and the taping type for the ICs can be selected at the user’s request. The selec-
tion can be made with designating the part number as shown below;
R5322N××××-×× ←Part Number
↑↑↑
ab c
Code Contents
aSetting combination of 2ch Output Voltage (VOUT) : Serial Number for Voltage Setting,
Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible for each channel.
b
Designation of Mask Option :
A version: without auto discharge function at OFF state.
B version: with auto discharge function at OFF state.
cDesignation of Taping Type :
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
PIN CONFIGURATION
SOT-23-6W
(mark side)
VOUT1 GND VOUT2
CE1 VDD CE2
564
123
PIN DESCRIPTION
Pin No. Symbol Description
1 CE1 Chip Enable Pin 1
2V
DD Input Pin
3 CE2 Chip Enable Pin 2
4V
OUT2 Output Pin 2
5 GND Ground Pin
6V
OUT1 Output Pin 1
R5322N
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VIN Input Voltage 6.5 V
VCE Input Voltage (CE Pin) -0.3 ~ VIN+0.3 V
VOUT Output Voltage -0.3 ~ VIN+0.3 V
IOUT1 Output Current 1 130 mA
IOUT2 Output Current 2 130 mA
PDPower Dissipation 250 mW
Topt Operating Temperature Range -40 ~ 85 °C
Tstg Storage Temperature Range -55 ~ 125 °C
R5322N
5
ELECTRICAL CHARACTERISTICS
• R5322N×××
××××××
×××A/B To p t = 2 5 °C
Symbol Item Conditions MIN. TYP. MAX. Unit
VOUT Output Voltage VIN = Set VOUT+1V
1mA ≤ IOUT ≤ 30mA
VOUT
×0.98
VOUT
×1.02 V
IOUT Output Current VIN – VOUT = 1.0V 120 mA
∆VOUT/∆IOUT Load Regulation VIN = Set VOUT+1V
1mA ≤ IOUT ≤ 120mA 12 40 mV
VDIF Dropout Voltage Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLT-
AGE
ISS Supply Current VIN = Set VOUT+1V 75 150 µA
Istandby Supply Current (Standby) VIN = VCE = Set VOUT+1V 0.1 1.0 µA
∆VOUT/∆VIN Line Regulation
Set VOUT+0.5V ≤ VIN ≤ 6V
IOUT = 30mA
(In case that VOUT ≤ 1.6V,
2.2V≤ VIN ≤ 6V)
0.05 0.20 %/V
RR Ripple Rejection
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT+1V,
IOUT = 30mA
75 dB
VIN Input Voltage 2.2 6.0 V
∆VOUT/∆TOutput Voltage
Temperature Coefficient
IOUT = 30mA
-40°C ≤ To p t ≤ 85°C±100 ppm
/°C
Ilim Short Current Limit VOUT = 0V 40 mA
RPD CE Pull-down Resistance 1.5 4 16 MΩ
VCEH CE Input Voltage “H” 1.5 VIN V
VCEL CE Input Voltage “L” 0.0 0.3 V
en Output Noise BW=10Hz to 100kHz 30 µVrms
RLOW
Low Output Nch Tr. ON
Resistance (of B version) VCE=0V 70 Ω
R5322N
6
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
To p t = 2 5 °C
Dropout Voltage
VDIF (V)
Output Voltage
VOUT (V)
Condition TYP. MAX.
1.5 ≤ VOUT ≤ 1.6 0.36 0.70
1.7 ≤ VOUT ≤ 1.8 0.30 0.50
1.9 ≤ VOUT ≤ 2.0 0.28 0.45
2.1 ≤ VOUT ≤ 2.7 0.24 0.40
2.8 ≤ VOUT ≤ 4.0
IOUT = 120mA
0.18 0.30
TEST CIRCUITS
43
2
1
V
V
OUT2
V
OUT2
CE2
CE1
V
DD
V
OUT1
GND
R5322N
SERIES
V
OUT1
C3
I
OUT2
VC2
C1
∗ C1=Tantal 1.0µF
C2=C3=Tantal 2.2µF
I
OUT1
5
6
43
2
1
A
V
OUT2
CE2
CE1
V
DD
V
OUT1
I
SS
GND
R5322N
SERIES
C3
C2
C1
5
6
∗ C1=1.0µF
C2=C3=2.2µF
Fig.1 Standard test Circuit Fig.2 Supply Current Test Circuit
43
2
1PG
V
OUT2
CE2
Pulse
Generator
CE1
V
DD
V
OUT1
GND
R5322N
SERIES
C3
I
OUT2
C2
I
OUT1
5
6
∗ C2=C3=2.2µF
43
2
1
V
OUT2
CE2
CE1
V
DD
V
OUT1
GND
R5322N
SERIES
C3
C2
C2
I
OUT1a
I
OUT1b
I
OUT2a
I
OUT2b
5
6
∗ C1=1.0µF
C2=C3=2.2µF
Fig.3 Ripple Rejection, Line Transient Response
Test Circuit
Fig.4 Load Transient Response Test Circuit
R5322N
7
TYPICAL APPLICATION
43
2
1
V
OUT2
CE2
CE1
V
DD
V
OUT1
GND
R5322N××××
SERIES
C3
C2
C1
IN
OUT2
OUT1
5
6
(External Components) Output Capacitor; Tantalum Type
R5322N
8
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
1.5V (VR1) 1.5V (VR2)
Output Current I
OUT
(A)
Output Voltage V
OUT
(V)
0.00 0.10
V
IN
=1.8V V
IN
=2.0V
V
IN
=3.5V
V
IN
=2.5V
0.0
0.2
0.4
1.6
1.4
1.0
1.2
0.6
0.8
0.300.20
Output Voltage V
OUT
(V)
0.00 0.10 0.150.05
V
IN
=1.8V
V
IN
=2.0V
V
IN
=3.5V
0.0
0.2
0.4
1.6
1.4
1.0
1.2
0.6
0.8
0.300.20 0.25
V
IN
=2.5V
Output Current I
OUT
(A)
2.8V (VR1) 2.8V (VR2)
Output Voltage VOUT(V)
0.00 0.10 0.150.05
VIN=3.1V
VIN=3.3V
VIN=4.8V
0.0
0.5
3.0
2.5
2.0
1.0
1.5
0.300.20 0.25
VIN=3.5V
Output Current IOUT(A)
Output Voltage VOUT(V)
0.00 0.10 0.150.05
VIN=3.1V
VIN=3.3V
VIN=4.8V
0.0
0.5
3.0
2.5
2.0
1.0
1.5
0.300.20 0.25
VIN=3.5V
Output Current IOUT(A)
4.0V (VR1) 4.0V (VR2)
Output Voltage VOUT(V)
0.00 0.10 0.150.05
VIN=4.3V
VIN=4.5V
VIN=6.0V
0.0
0.5
4.5
4.0
3.5
3.0
2.5
2.0
1.0
1.5
0.300.20
VIN=5.0V
Output Current IOUT(A)
Output Voltage VOUT(V)
0.00 0.10 0.150.05
VIN=4.3V
VIN=4.5V
VIN=6.0V
0.0
0.5
4.5
4.0
3.5
3.0
2.5
2.0
1.0
1.5
0.300.20 0.25
VIN=5.0V
Output Current IOUT(A)
R5322N
9
2) Output Voltage vs. Input Voltage
1.5V (VR1) 1.5V (VR2)
Input Voltage VIN(V)
Output Voltage VOUT(V)
1342
1.0
1.1
1.6
1.5
1.4
1.3
1.2
65
IOUT=1mA
IOUT=30mA
IOUT=50mA
Output Voltage VOUT(V)
1342
1.0
1.1
1.6
1.5
1.4
1.3
1.2
65
IOUT=1mA
IOUT=30mA
IOUT=50mA
Input Voltage VIN(V)
2.8V (VR1) 2.8V (VR2)
Output Voltage VOUT(V)
1342
2.0
2.1
2.2
2.9
2.8
2.7
2.6
2.4
2.5
2.3
65
IOUT=1mA
IOUT=30mA
IOUT=50mA
Input Voltage VIN(V)
Output Voltage VOUT(V)
1342
2.0
2.1
2.2
2.9
2.8
2.7
2.6
2.4
2.5
2.3
65
IOUT=1mA
IOUT=30mA
IOUT=50mA
Input Voltage VIN(V)
4.0V (VR1) 4.0V (VR2)
Output Voltage VOUT(V)
1342
3.0
3.2
4.2
4.0
3.8
3.6
3.4
65
IOUT=1mA
IOUT=30mA
IOUT=50mA
Input Voltage VIN(V)
Output Voltage VOUT(V)
1342
3.0
3.2
4.2
4.0
3.8
3.6
3.4
65
IOUT=1mA
IOUT=30mA
IOUT=50mA
Input Voltage VIN(V)
R5322N
10
3) Dropout Voltage vs. Temperature
1.5V (VR1) 1.5V (VR2)
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
0406020
0.00
0.20
1.00
0.80
0.60
0.40
12010080
Topt=85°C
25°C
-40°C
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
0406020
0.00
0.20
1.00
0.80
0.60
0.40
12010080
Topt=85°C
25°C
-40°C
2.8V (VR1) 2.8V (VR2)
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
0406020
0.00
0.05
0.10
0.40
0.35
0.30
0.25
0.15
0.20
12010080
Topt=85°C
25°C
-40°C
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
0406020
0.00
0.05
0.10
0.40
0.35
0.30
0.25
0.15
0.20
100 12080
Topt=85°C
25°C
-40°C
4.0V (VR1) 4.0V (VR2)
Output Current IOUT(mA)
Dropout Voltage VDIF(V)
0406020
0.00
0.05
0.10
0.40
0.35
0.30
0.25
0.15
0.20
12010080
Topt=85°C
25°C
-40°C
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0406020
0.00
0.05
0.10
0.40
0.35
0.30
0.25
0.15
0.20
12010080
Topt=85°C
25°C
-40°C
R5322N
11
4) Output Voltage vs. Temperature
1.5V (VR1) 1.5V (VR2)
Temperature Topt(°C)
Output Voltage VOUT(V)
-50 0 25-25
1.46
1.47
1.48
1.54
1.53
1.52
1.51
1.49
1.50
100
VIN=2.5V IOUT=30mA
7550
Temperature Topt(°C)
Output Voltage VOUT(V)
-50 0 25-25
1.46
1.47
1.48
1.54
1.53
1.52
1.51
1.49
1.50
100
VIN=2.5V IOUT=30mA
7550
2.8V (VR1) 2.8V (VR2)
Temperature Topt(°C)
Output Voltage VOUT(V)
-50 0 25-25
2.74
2.76
2.78
2.86
2.84
2.82
2.80
100
VIN=3.8V IOUT=30mA
7550
Temperature Topt(°C)
Output Voltage VOUT(V)
-50 0 25-25
2.74
2.76
2.78
2.86
2.84
2.82
2.80
100
VIN=3.8V IOUT=30mA
7550
4.0V (VR1) 4.0V (VR2)
Temperature Topt(°C)
Output Voltage VOUT(V)
-50 0 25-25
3.92
3.94
3.96
3.98
4.08
4.06
4.04
4.02
4.00
100
VIN=5.0V IOUT=30mA
7550
Temperature Topt(°C)
Output Voltage V
OUT
(V)
-50 0 25-25
3.92
3.94
3.96
3.98
4.08
4.06
4.04
4.02
4.00
100
V
IN
=5.0V I
OUT
=30mA
7550
R5322N
12
5) Supply Current vs. Input Voltage
1.5V 2.8V
Input Voltage V
IN
(V)
Supply Current I
SS
(µA)
0231
0
20
40
100
80
60
65
VR1
VR2
4
Input Voltage V
IN
(V)
Supply Current I
SS
(µA)
0231
0
20
40
100
80
60
65
VR1
VR2
4
4.0V
Input Voltage V
IN
(V)
Supply Current I
SS
(µA)
0231
0
20
40
100
80
60
65
VR1
VR2
4
6) Supply Current vs. Temperature
1.5V (VR1) 1.5V (VR2)
Temperature Topt(°C)
Supply Current ISS(µA)
-50 0
0
20
40
100
80
60
100
VIN=2.5V
50
Temperature Topt(°C)
Supply Current ISS(µA)
-50 0
0
20
40
100
80
60
100
VIN=2.5V
50
R5322N
13
2.8V (VR1) 2.8V (VR2)
Temperature Topt(°C)
Supply Current ISS(µA)
-50 0 25-25
0
20
100 VIN=3.8V
80
60
40
1007550
Temperature Topt(°C)
Supply Current ISS(µA)
-50 0 25-25
0
20
100 VIN=3.8V
80
60
40
1007550
4V (VR1) 4V (VR2)
Temperature Topt(°C)
Supply Current ISS(µA)
-50 0 25-25
0
20
100 VIN=5.0V
80
60
40
1007550
Temperature Topt(°C)
Supply Current ISS(µA)
-50 0 25-25
0
20
100 VIN=5.0V
80
60
40
1007550
7) Dropout Voltage vs. Set Output Voltage
VR1 VR2
Output Voltage V
OUT
(V)
Dropout Voltage V
DIF
(V)
1.0 2.0
0.00
0.10
0.20
0.70
0.60
0.50
0.40
0.30
I
OUT
=10mA
30mA
50mA
120mA
4.03.0
Output Voltage V
OUT
(V)
Dropout Voltage V
DIF
(V)
1.0 2.0
0.00
0.10
0.20
0.70
0.60
0.50
0.40
0.30
I
OUT
=10mA
30mA
50mA
120mA
4.03.0
R5322N
14
8) Ripple Rejection vs. Frequency
1.5V (VR1) 1.5V (VR2)
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=2.5V+0.5Vp-p
C
OUT
=tantal 1.0µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
V
IN
=2.5V+0.5Vp-p
C
OUT
=tantal 1.0µF Topt=25°C
1.5V (VR1) 1.5V (VR2)
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
V
IN
=2.5V+0.5Vp-p
C
OUT
=tantal 2.2µF Topt=25°C
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
V
IN
=2.5V+0.5Vp-p
C
OUT
=tantal 2.2µF Topt=25°C
2.8V (VR1) 2.8V (VR2)
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
V
IN
=3.8V+0.5Vp-p
C
OUT
=tantal 1.0µF Topt=25°C
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
30
90
70
80
50
60
40
100
IOUT=1mA
IOUT=30mA
IOUT=50mA
10
VIN=3.8V+0.5Vp-p
COUT=tantal 1.0µF Topt=25°C
R5322N
15
2.8V (VR1) 2.8V (VR2)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=3.8V+0.5Vp-p
C
OUT
=tantal 2.2µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
Frequency f(kHz) Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=3.8V+0.5Vp-p
C
OUT
=tantal 2.2µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
4.0V (VR1) 4.0V (VR2)
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=5.0V+0.5Vp-p
C
OUT
=tantal 1.0µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=5.0V+0.5Vp-p
C
OUT
=tantal 1.0µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
4.0V (VR1) 4.0V (VR2)
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=5.0V+0.5Vp-p
C
OUT
=tantal 2.2µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1
0
10
20
90
V
IN
=5.0V+0.5Vp-p
C
OUT
=tantal 2.2µF Topt=25°C
70
80
60
50
40
30 I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
10010
R5322N
16
9) Ripple Rejection vs. Input Voltage (DC bias)
2.8V (VR1) 2.8V (VR2)
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.9 3.0
0
20
100
COUT=tantal 2.2µF
IOUT=1mA
80
60
40 f=1kHz
f=10kHz
f=100kHz
3.33.1 3.2
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.9 3.0
0
20
100
COUT=tantal 2.2µF
IOUT=1mA
80
60
40 f=1kHz
f=10kHz
f=100kHz
3.33.1 3.2
2.8V (VR1) 2.8V (VR2)
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
2.9 3.0
0
20
100
C
OUT
=tantal 2.2µF
I
OUT
=30mA
80
60
40 f=1kHz
f=10kHz
f=100kHz
3.33.1 3.2
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
2.9 3.0
0
20
100
C
OUT
=tantal 2.2µF
I
OUT
=30mA
80
60
40 f=1kHz
f=10kHz
f=100kHz
3.33.1 3.2
2.8V (VR1) 2.8V (VR2)
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.9 3.0
0
20
100
COUT=tantal 2.2µF
IOUT=50mA
80
60
40 f=1kHz
f=10kHz
f=100kHz
3.33.1 3.2
Input Voltage V
IN
(V)
Ripple Rejection RR(dB)
2.9 3.0
0
20
100
C
OUT
=tantal 2.2µF
I
OUT
=50mA
80
60
40 f=1kHz
f=10kHz
f=100kHz
3.33.1 3.2
R5322N
17
10) Input Transient Response
R5322N001×
××
× (2.8V, VR1)
Time t(µs)
Output Voltage V
OUT
(V)
Input Voltage V
IN
(V)
010
2.78
2.79
2.84
I
OUT
=30mA C
OUT
=tantal 1.0µF
tr/tf=5µs Topt=25°C
2.83
2.82
2.81
2.80
0.0
1.0
6.0
5.0
4.0
3.0
2.0
10090807020 30 40 50 60
V
IN
V
OUT
R5322N001×
××
× (2.8V, VR1)
Time t(µs)
Output Voltage V
OUT
(V)
Input Voltage V
IN
(V)
010
2.78
2.79
2.84
I
OUT
=30mA C
OUT
=tantal 2.2µF
tr/tf=5µs Topt=25°C
2.83
2.82
2.81
2.80
0.0
1.0
6.0
5.0
4.0
3.0
2.0
10090807020 30 40 50 60
V
IN
V
OUT
R5322N001×
××
× (2.8V, VR1)
Time t(µs)
Output Voltage V
OUT
(V)
Input Voltage V
IN
(V)
010
2.78
2.79
2.84
I
OUT
=30mA C
OUT
=tantal 6.8µF
tr/tf=5µs Topt=25°C
2.83
2.82
2.81
2.80
0.0
1.0
6.0
5.0
4.0
3.0
2.0
10090807020 30 40 50 60
V
IN
V
OUT
R5322N
18
R5322N001×
××
× (2.8V, VR2)
Time t(µs)
Output Voltage VOUT(V)
Input Voltage VIN(V)
010
2.78
2.79
2.84
IOUT=30mA COUT=tantal 1.0µF
tr/tf=5µs Topt=25°C
2.83
2.82
2.81
2.80
0.0
1.0
6.0
5.0
4.0
3.0
2.0
10090807020 30 40 50 60
VIN
VOUT
R5322N001×
××
× (2.8V, VR2)
Time t(µs)
Output Voltage VOUT(V)
Input Voltage VIN(V)
010
2.78
2.79
2.84
IOUT=30mA COUT=tantal 2.2µF
tr/tf=5µs Topt=25°C
2.83
2.82
2.81
2.80
0.0
1.0
6.0
5.0
4.0
3.0
2.0
10090807020 30 40 50 60
VIN
VOUT
R5322N001×
××
× (2.8V, VR2)
Time t(µs)
Output Voltage V
OUT
(V)
Input Voltage V
IN
(V)
010
2.78
2.79
2.84
I
OUT
=30mA C
OUT
=tantal 6.8µF
tr/tf=5µs Topt=25°C
2.83
2.82
2.81
2.80
0.0
1.0
6.0
5.0
4.0
3.0
2.0
10090807020 30 40 50 60
V
IN
V
OUT
R5322N
19
11) Load Transient Response
R5322N001×
××
× (VR1=2.8V)
Time t(µs)
Output Voltage V
OUT
(V)
Output Current I
OUT1
(mA)
-2 0
2.75
3.00
2.90
2.95
2.85
2.80
2.70
2.75
2.80
150
100
50
0
18
I
OUT
=50mA 100mA V
IN
=3.8V C
IN
=tantal 1.0µF
C
OUT
=tantal 1.0µF tr/tf=5µs Topt=25°C
161412246810
V
OUT2
V
OUT1
I
OUT1
I
OUT2
=30mA
R5322N001×
××
× (VR1=2.8V)
Time t(µs)
Output Voltage V
OUT
(V)
Output Current I
OUT1
(mA)
-2 0
2.75
3.00
2.90
2.95
2.85
2.80
2.70
2.75
2.80
150
100
50
0
18161412246810
V
OUT2
V
OUT1
I
OUT1
I
OUT2
=30mA
I
OUT
=50mA 100mA V
IN
=3.8V C
IN
=tantal 1.0µF
C
OUT
=tantal 2.2µF tr/tf=5µs Topt=25°C
R5322N001×
××
× (VR1=2.8V)
Time t(µs)
Output Voltage V
OUT
(V)
Output Current I
OUT1
(mA)
-2 0
2.75
3.00
2.90
2.95
2.85
2.80
2.70
2.75
2.80
150
100
50
0
18161412246810
V
OUT2
V
OUT1
I
OUT1
I
OUT2
=30mA
I
OUT
=50mA 100mA V
IN
=3.8V C
IN
=tantal 1.0µF
C
OUT
=tantal 6.8µF tr/tf=5µs Topt=25°C
R5322N
20
R5322N001×
××
× (VR2=2.8V)
Time t(µs)
Output Voltage V
OUT
(V)
Output Current I
OUT2
(mA)
-2 0
2.75
3.00
2.90
2.95
2.85
2.80
2.70
2.75
2.80
150
100
50
0
18161412246810
V
OUT2
V
OUT1
I
OUT2
I
OUT1
=30mA
I
OUT
=50mA 100mA V
IN
=3.8V C
IN
=tantal 1.0µF
C
OUT
=tantal 1.0µF tr/tf=5µs Topt=25°C
R5322N00×
××
× (VR2=2.8V)
Time t(µs)
Output Voltage V
OUT
(V)
Output Current I
OUT2
(mA)
-2 0
2.75
3.00
2.90
2.95
2.85
2.80
2.70
2.75
2.80
150
100
50
0
18161412246810
V
OUT2
V
OUT1
I
OUT2
I
OUT1
=30mA
I
OUT
=50mA 100mA V
IN
=3.8V C
IN
=tantal 1.0µF
C
OUT
=tantal 2.2µF tr/tf=5µs Topt=25°C
R5322N00×
××
× (VR2=2.8V)
Time t(µs)
Output Voltage V
OUT
(V)
Output Current I
OUT2
(mA)
-2 0
2.75
3.00
2.90
2.95
2.85
2.80
2.70
2.75
2.80
150
100
50
0
18161412246810
V
OUT2
V
OUT1
I
OUT2
I
OUT1
=30mA
I
OUT
=50mA 100mA V
IN
=3.8V C
IN
=tantal 1.0µF
C
OUT
=tantal 6.8µF tr/tf=5µs Topt=25°C
R5322N
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 2.2µF or more capacitance COUT with good frequency characteristics and ESR (Equivalent Se-
ries Resistance) of which is in the range described as follows:
The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The conditions when
the white noise level is under 40µV (Avg.) are marked as the hatched area in the graph.
(Note: When a ceramic capacitor is connected to the Output Pin as Output capacitor for phase compensation, the op-
eration might be unstable unless as much as 1Ω resistor is connected between the capacitor and GND instead of ESR.
Test these ICs with as same external components as ones to be used on the PCB.)
<Test conditions>
(1) VIN=3.8V
(2) Frequency band: 10Hz to 2MHz
(3) Temperature: 25°C
R5322N001×
××
× (VR1=2.8V) R5322N001×
××
× (VR1=2.8V)
Output Current I
OUT1
(mA)
ERS1(Ω)
0406020
0.01
0.1
100
C
IN
=Ceramic 1.0µF
C
OUT
=Ceramic 2.2µF
10
1
12010080
Output Current IOUT1(mA)
ERS1(Ω)
0406020
0.01
0.1
100
CIN=Ceramic 2.2µF
COUT=Ceramic 2.2µF
10
1
12010080
R5322N
22
R5322N001×
××
× (VR2=2.8V) R5322N001×
××
× (VR2=2.8V)
Output Current I
OUT2
(mA)
ERS2(Ω)
0406020
0.01
0.1
100
C
IN
=Ceramic 1.0µF
C
OUT
=Ceramic 2.2µF
10
1
12010080
Output Current I
OUT2
(mA)
ERS2(Ω)
0406020
0.01
0.1
100
C
IN
=Ceramic 2.2µF
C
OUT
=Ceramic 2.2µF
10
1
12010080
• Make VDD and GND line sufficient. When the impedance of these is high, the noise might be picked up or not work
correctly.
• Connect the capacitor with a capacitance of 1µF or more between VDD and GND as close as possible.
• Set external components, especially Output Capacitor, as close as possible to the ICs and make wiring shortest.
