RN5RL20A (RICOH)
VOLTAGE REGULATOR

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VOLTAGE REGULATOR
R×5RL SERIES
APPLICATION MANUAL
NO.EA-022-0006


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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R×5RL SERIES
VOLTAGE REGULATOR
OUTLINE
The R×5RL Series are voltage regulator ICs with high accuracy output voltage and ultra-low quiescent cur-
rent by CMOS process. Each of these ICs consists of a voltage reference unit, an error amplifier, a driver tran-
sistor, and resistors for setting output voltage. The output voltage is fixed with high accuracy.
Three types of packages, TO-92, SOT-89 (Mini-power Mold), SOT-23-5 (Mini-mold), are available.
FEATURES
• Ultra-low Quiescent Current ...........................TYP. 1.1µA (R×5RL30A, VIN=5.0V)
• Small Dropout Voltage .....................................TYP. 30mV (R×5RL50A, IOUT=1mA)
• Low Temperature-Drift Coefficient of Output Voltage ...............TYP. ±100 ppm/˚C
• Excellent Line Regulation.................................TYP. 0.1%/V
• Output Voltage ..................................................Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V
is possible (refer to Selection Guide).
• High Accuracy Output Voltage.........................±2.5%
• Three Types of Packages...................................TO-92, SOT-89 (Mini-power Mold), SOT-23-5 (Mini-mold)
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for cameras, video instruments such as camcorders, VCRs, and hand- held communication equipment.
• Precision voltage references.
BLOCK DIAGRAM
VIN
2
VOUT
3
+
Vref
1
GND
1


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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R×5RL
SELECTION GUIDE
The package type, the output voltage, the packing type, and the taping type of R×5RL Series can be
designated at the user's request by specifying the part number as follows:
R×5RL×××× ×× Part Number
↑ ↑ ↑↑ ↑
a b cd e
Code
a
b
c
d
e
Contents
Designation of Package Type:
E: TO-92
H: SOT-89 (Mini-power Mold)
N: SOT-23-5 (Mini-mold)
Setting Output Voltage (VOUT):
Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible.
A
Designation of Packing Type:
A: Taping
C: Antistatic bag for TO-92 and samples
Designation of Taping Type:
Ex. TO-92 : RF, RR, TZ
SOT-89 : T1, T2
SOT-23-5 : TR, TL
(refer to Taping Specifications)
“TZ”, “T1”, and “TR” are prescribed as standard directions.
For example, the product with Package Type SOT-89, Output Voltage 5.0V, Version A,and Taping Type T1 are
designated by Part Number RH5RL50AA-T1.
2


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VOLTAGE REGULATOR

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PIN CONFIGURATION
TO-92
SOT-89
(mark side)
123
(mark side)
12 3
PIN DESCRIPTION
• TO-92
Pin No.
1
2
3
Symbol
GND
VIN
VOUT
• SOT-89
Pin No.
1
2
3
Symbol
GND
VIN
VOUT
R×5RL
SOT-23-5
54
(mark side)
123
• SOT-23-5
Pin No.
1
2
3
4
5
Symbol
GND
VIN
VOUT
NC
NC
3


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VOLTAGE REGULATOR

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R×5RL
ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
VOUT
IOUT
PD1
PD2
Topt
Tstg
Tsolder
Item
Input Voltage
Output Voltage
Output Current
Power Dissipation 1 (NOTE1)
Power Dissipation 2 (NOTE2)
Operating Temperature
Storage Temperature
Lead Temperature (Soldering)
(NOTE 1) applied to SOT-89 and TO-92
(NOTE 2) applied to SOT-23-5
Rating
+12
–0.3 to VIN +0.3
150
300
150
– 40 to +85
– 55 to +125
260˚C,10s
Topt=25˚C
Unit
V
V
mA
mW
mW
˚C
˚C
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any
conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above
these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress
ratings only and do not necessarily imply functional operation below these limits.
4


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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ELECTRICAL CHARACTERISTICS
• R×5RL20A
Symbol
Item
VOUT
Output Voltage
IOUT
VOUT
IOUT
VDIF
ISS
VOUT
VIN
VIN
VOUT
Topt
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
Conditions
VIN=4.0V
10µAIOUT10mA
VIN=4.0V
VIN=4.0V
1mAIOUT35mA
IOUT=1mA
VIN=4.0V
IOUT=1mA
VOUT+0.5VVIN10V
IOUT=10mA
–40˚CTopt85˚C
R×5RL30A
Symbol
Item
VOUT
Output Voltage
IOUT
VOUT
IOUT
VDIF
ISS
VOUT
VIN
VIN
VOUT
Topt
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
Conditions
VIN=5.0V
10µAIOUT10mA
VIN=5.0V
VIN=5.0V
1mAIOUT50mA
IOUT=1mA
VIN=5.0V
IOUT=1mA
VOUT+0.5VVIN10V
IOUT=10mA
–40˚CTopt85˚C
R×5RL
MIN.
TYP.
Topt=25˚C
MAX.
Unit
1.950 2.000 2.050
V
25 35
mA
30 45 mV
60 90 mV
1.0 3.0 µA
0.05 0.2 %/V
10 V
±100
ppm/˚C
MIN.
TYP.
Topt=25˚C
MAX.
Unit
2.925 3.000 3.075
V
35 50
mA
40 60 mV
40 60 mV
1.1 3.3 µA
0.05 0.2 %/V
10 V
±100
ppm/˚C
5


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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R×5RL
• R×5RL40A
Symbol
Item
VOUT
Output Voltage
IOUT
VOUT
IOUT
VDIF
ISS
VOUT
VIN
VIN
VOUT
Topt
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
• R×5RL50A
Symbol
Item
VOUT
Output Voltage
IOUT
VOUT
IOUT
VDIF
ISS
VOUT
VIN
VIN
VOUT
Topt
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
Conditions
VIN=6.0V
10µAIOUT10mA
VIN=6.0V
VIN=6.0V
1mAIOUT65mA
IOUT=1mA
VIN=6.0V
IOUT=1mA
VOUT+0.5VVIN10V
IOUT=10mA
–40˚CTopt85˚C
MIN.
TYP.
Topt=25˚C
MAX. Unit
3.900 4.000 4.100
V
45 65
mA
50 75 mV
25 38 mV
1.2 3.6 µA
0.05 0.2 %/V
10 V
±100
ppm/˚C
Conditions
VIN=7.0V
10µAIOUT10mA
VIN=7.0V
VIN=7.0V
1mAIOUT80mA
IOUT=1mA
VIN=7.0V
IOUT=1mA
VOUT+0.5VVIN10V
IOUT=10mA
–40˚CTopt85˚C
MIN.
TYP.
Topt=25˚C
MAX. Unit
4.875 5.000 5.125
V
55 80
mA
60 90 mV
25 38 mV
1.3 3.9 µA
0.05 0.2 %/V
10 V
±100
ppm/˚C
6


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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• R×5RL60A
Symbol
Item
VOUT
Output Voltage
IOUT
VOUT
IOUT
VDIF
ISS
VOUT
VIN
VIN
VOUT
Topt
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Output Voltage
Temperature Coefficient
R×5RL
Conditions
VIN=8.0V
10µAIOUT10mA
VIN=8.0V
VIN=8.0V
1mAIOUT80mA
IOUT=1mA
VIN=8.0V
IOUT=1mA
VOUT+0.5VVIN10V
IOUT=10mA
–40˚CTOPt85˚C
MIN.
TYP.
Topt=25˚C
MAX. Unit
5.850 6.000 6.150
V
55 80
mA
60 90 mV
25 38 mV
1.3 3.9 µA
0.05 0.2 %/V
10 V
±100
ppm/˚C
7


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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R×5RL
ELECTRICAL CHARACTEISTICS BY OUTPUT VOLTAGE
Output Voltage
OutputCurrent
Load Regulation
Dropout Voltage
Part Number
VOUT(V)
IOUT(mA)
VOUT(mV)
VDIF (mV)
R×5RL20A
R×5RL21A
R×5RL22A
R×5RL23A
R×5RL24A
R×5RL25A
R×5RL26A
R×5RL27A
R×5RL28A
R×5RL29A
R×5RL30A
R×5RL31A
R×5RL32A
R×5RL33A
R×5RL34A
R×5RL35A
R×5RL36A
R×5RL37A
R×5RL38A
R×5RL39A
R×5RL40A
R×5RL41A
R×5RL42A
R×5RL43A
R×5RL44A
R×5RL45A
R×5RL46A
R×5RL47A
R×5RL48A
R×5RL49A
R×5RL50A
R×5RL51A
R×5RL52A
R×5RL53A
R×5RL54A
R×5RL55A
R×5RL56A
R×5RL57A
R×5RL58A
R×5RL59A
R×5RL60A
Conditions
VIN
VOUT
=2.0V
10µA
IOUT
10mA
MIN.
1.950
2.048
2.145
2.243
2.340
2.438
2.535
2.633
2.730
2.828
2.925
3.023
3.120
3.218
3.315
3.413
3.510
3.608
3.705
3.803
3.900
3.998
4.095
4.193
4.290
4.388
4.485
4.583
4.680
4.778
4.875
4.973
5.070
5.168
5.265
5.363
5.460
5.558
5.655
5.753
5.850
TYP.
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
3.100
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.000
5.100
5.200
5.300
5.400
5.500
5.600
5.700
5.800
5.900
6.000
MAX. Conditions
2.050
2.152
2.255
2.357
2.460
2.562
2.665
2.767
2.870
2.972
3.075
3.177
3.280
3.382
3.485
3.587
3.690
3.792
3.895
3.997
4.100
4.202
4.305
4.407
4.510
4.612
4.715
4.817
4.920
5.022
5.125
5.227
5.330
5.432
5.535
5.637
5.740
5.842
5.945
6.047
6.150
VIN
VOUT
=2.0V
MIN.
25
35
45
55
TYP. Conditions TYP. MAX. Conditions TYP. MAX.
VIN
VOUT
=2.0V
35 30
1mA
IOUT
35mA
45
60 90
50 75
VIN
VOUT
=2.0V
50 40
1mA
IOUT
50mA
VIN
VOUT
=2.0V
65 50
1mA
IOUT
65mA
40
35
60
30
IOUT
=1mA
70
60
53
45
VIN
VOUT
=2.0V
80 60
1mA
IOUT
80mA
90
25 38
8


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VOLTAGE REGULATOR

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Topt=25˚C
Quiescent Current
Line Regulation Input Voltage Output Voltage Tempco.
Iss(µA)
VOUT/VIN(%/V)
Conditions TYP. MAX. Conditions TYP. MAX.
VIN(V) VOUT/T(ppm/˚C)
MAX. Conditions TYP.
1.0 3.0
1.1 3.3
VIN
VOUT
=2.0V
1.2
IOUT
=1mA
0.05 0.2
VOUT+
0.5V
VIN
3.6 10V
IOUT
=10mA
10 ±100
–40˚C
Topt
85˚C
1.3 3.9
R×5RL
9


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VOLTAGE REGULATOR

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R×5RL
OPERATION
VIN
Error Amplifire
+
Vref
GND
FIG. 1 Brock Diagram
VOUT
R1
Output Voltage VOUT divided at the node between
Registers R1 and R2 is compared with Reference Voltage
by Error Amplifier, so that a constant voltage is output.
R2
GND
TEST CIRCUITS
VIN
VIN
R×5RL
VOUT
IOUT
VOUT
SERIES
CI +
1µF
GND
+ Co
1µF
ISS
VIN
VIN
CI +
1µF
R×5RL
SERIES
GND
VOUT
FIG. 2 Test Circuit
VIN
R×5RL
VOUT
SERIES
VOUT
P.G
GND +
Ro
Co
0.1µF
FIG. 3 Quiescent Current Test Circuit
FIG. 4 Line Transient Response Test Circuit
10


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VOLTAGE REGULATOR

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TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R×5RL30A
3.1 VIN=5.0V
3.0
Topt= 40˚C
2.9 25˚C
85˚C
2.8
2.7
0
20 40 60 80 100 120 140
Output Current IOUT(mA)
5.1 R×5RL50A VIN=7.0V
Topt= 40˚C
5.0
4.9
85˚C
25˚C
4.8
4.7
0
50 100 150 200
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
R×5RL30A Topt=25˚C
3.2
3.0
IOUT=1mA
2.8
2.6
10mA
2.4
2.2
2.5
5mA
3.0
Input Voltage VIN(V)
3.5
R×5RL
R×5RL40A VIN=6.0V
4.1
4.0
Topt= 40˚C
3.9
85˚C
25˚C
3.8
3.7
0 2 0 4 0 6 0 8 0 100 120 140 160 180
Output Current IOUT(mA)
3.05
3.04
3.03
3.02
3.01
3.00
2.99
2.98
2.97
2.96
2.95
3
R×5RL30A
Topt=25˚C
IOUT=1mA
4 5 6 7 8 9 10
Input Voltage VIN(V)
11


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R×5RL
R×5RL40A Topt=25˚C
4.2
4.0
IOUT=1mA
3.8
5mA
3.6
10mA
3.4
3.2
3.5
4.0
Input Voltage VIN(V)
4.5
R×5RL50A Topt=25˚C
5.2
5.0
IOUT=1mA
4.8
5mA
4.6
10mA
4.4
4.2
4.5
5.0
Input Voltage VIN(V)
5.5
3) Dropout Voltage vs. Output Curret
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
R×5RL30A
85˚C
25˚C
Topt= 40˚C
10 20 30 40
Output Current IOUT(mA)
50
4.05
4.04
4.03
4.02
4.01
4.00
3.99
3.98
3.97
3.96
3.95
4
Topt=25˚C
R×5RL40A IOUT=1mA
5 6 78 9
Input Voltage VIN(V)
10
5.05
5.04
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.96
4.95
5
R×5RL50A
Topt=25˚C
IOUT=1mA
6 789
Input Voltage VIN(V)
10
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0 0
R×5RL40A
85˚C
25˚C
Topt= 40˚C
10 20 30 40
Output Current IOUT(mA)
50
12


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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R×5RL50A
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
10 20 30 40 50
Output Current IOUT(mA)
4) Output Voltage vs.Temperature
3.10
R×5RL30A
VIN=5.0V
IOUT=10mA
3.08
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
2.90
–40 –20 0 20 40 60 80 100
Temperature Topt(˚C)
5.10
R×5RL50A
VIN=7.0V
IOUT=10mA
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
–40 –20 0 20 40 60 80 100
Temperature Topt(˚C)
R×5RL
4.10
R×5RL40A
VIN=6.0V
IOUT=10mA
4.08
4.06
4.04
4.02
4.00
3.98
3.96
3.94
3.92
3.90
–40 –20 0 20 40 60 80 100
Temperature Topt(˚C)
13


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R×5RL
5) Quiescent Current vs. Input Voltage
R×5RL30C
1.5 Topt=25˚C
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
3
4 5 6 7 8 9 10
Input Voltage VIN(V)
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
4
R×5RL50A Topt=25˚C
5 678 9
Input Voltage VIN(V)
10
6) Quiescent Current vs. Temperature
1.5
R×5RL30A
VIN=5.0V
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
–40 –20 0 20 40 60 80 100
Temperature Topt(˚C)
14
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
5
R×5RL40A Topt=25˚C
6 7 89
Input Voltage VIN(V)
10
2.0
R×5RL40A
VIN=6.0V
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
–40 –20 0 20 40 60 80 100
Temperature Topt(˚C)


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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2.5
R×5RL50A
VIN=7.0V
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
–40 –20 0 20 40 60
Temperature Topt(˚C)
80 100
8) Line Transient Response (1)
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
0
1
9) Line Transient Response (2)
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
0
1
R×5RL
7) Dropout Voltage vs. Set Output Voltage
0.7
0.6
0.5
0.4
0.3
IOUT=10mA
0.2
5mA
0.1
1mA
0.0
012 34 5
Set Output Voltage Vreg(V)
6
IOUT=1mA
Input Voltage
Output Voltage
2
Time t(ms)
34
IOUT=10mA
Input Voltage
Output Voltage
2
Time t(ms)
3
4
15


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R×5RL
TYPICAL APPLICATION
VIN VIN R×5RL VOUT
SERIES
++
C1 C2
GND
VOUT
GND
GND
In R×5RL Series, a constant voltage can be obtained
without using Capacitors C1 and C2. However, when the
wire connected to Vin is long, use Capacitor C1. Output
noise can be reduced by using Capacitor C2.
Insert Capacitors C1 and C2 with the capacitance of
0.1µF to 2.0µF between Input/Output Pins and GND Pin
with minimum wiring.
APPLICATION CIRCUITS
• VOLTAGE BOOST CIRCUIT
VIN
VIN
+
C1
R×5RL
SERIES
VOUT
GND
+
C2
ISS
R1
R2
VOUT
• DUAL POWER SUPPLY CIRCUIT
IC1
VIN VOUT
VIN R×5RL20A
+
C1
GND
ISS
IC2
VIN
+
C2
GND
VOUT
R×5RL30A
+
C3
GND
VOUT1
5V
D
VOUT2
3V
R
GND
The output voltage can be obtained by the follow-
ing formula :
VOUT=Vreg*1· (1+R2/R1) + ISS R · 2
Since the quiescent current of R×5RE Series is so
small that the resistances of R1 and R2 can be set as
large as several hundreds kand therefore the sup-
ply current of “Voltage Boost Circuit” itself can be
reduced.
Furthermore, since R×5RL Series are operated by
a constant voltage, the supply current of “Voltage
Boost Circuit” is not substantially affected by the
input voltage.
*1) Vreg : Set Output Voltage of R×5RL Series.
As shown in the circuit diagram, a dual power sup-
ply circuit can be constructed by using two R×5RL
Series.
This circuit diagram shows a dual power supply
circuit with an output of 3V and an output of 5V.
When the minimum output current of IC2 is larger
than ISS of IC1, Resistor R is unnecessary. Diode D is
a protection diode for the case where VOUT2 becomes
larger than VOUT1.
16


RN5RL20A (RICOH)
VOLTAGE REGULATOR

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R×5RL
• CURRENT BOOST CIRCUIT
Tr.1
VIN
+
C1
GND
VIN R×5RL VOUT
SERIES
VOUT
GND
+
C2
GND
Output current of 60mA or more can be obtained by
the current boost circuit constructed as shown in this cir-
cuit diagram.
• CURRENT BOOST CIRCUIT WITH OVERCURRENT LIMIT CIRCUIT
R2 Tr.1
Tr.2
VIN
C1
R1
+
Vbe2
VIN
GND
A circuit for protecting Tr.1 from the destruction
caused by output short-circuit or overcurrent is shown in
R×5RL
SERIES
GND
VOUT
IOUT
+ VOUT
C2
this circuit diagram.
When the voltage reduction caused by the current ( aa
IOUT) which flows through R2 reaches Vbe2 of Tr.2 by
additionally providing the current boost circuit with Tr.2
and R2, Tr.2 is turned ON and the base current of Tr.1 is
GND increased, so that the output current is limited.
Current limit of Overcurrent Limit Circuit is obtained
as follows :
IOUT Vbe2/R2
• CURRENT SOURCE
VIN
VIN
+
C1
R×5RL
SERIES
VOUT
R
GND
ISS
IOUT
A current source with the structure as shown in this
circuit diagram can be used. Output Current IOUT is
obtained as follows :
IOUT= Vreg*1/R + ISS
Take care that Output Current IOUT does not exceed
its allowable current.
*1) Vreg : Set Output Voltage of R×5RL Series.
17




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