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VOL TAGE REGULATOR
Rx5RL SERIES
APPLICATION MANUAL
NO.EA-022-0006
VOLTAGE REGULATOR
R x5RL SERIES
OUTLINE
The Rx5RL Series are voltage regulator ICs with high accuracy output voltage and ultra-low quiescent current by CMOS process. Each of these ICs consists of a voltage reference unit, an error amplifier, a driver transistor, 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. 1.1A (Rx5RL30A, VIN=5.0V) * Small Dropout Voltage .....................................TYP. 30mV (Rx5RL50A, 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). .........................2.5% * High Accuracy Output Voltage * 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 3 VOUT
+ - Vref 1 GND
1
Rx5RL
SELECTION GUIDE
The package type, the output voltage, the packing type, and the taping type of Rx5RL Series can be designated at the user's request by specifying the part number as follows: Rx5RLxxxx - xx Part Number
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a
b cd
e
Code
Contents
a
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.
b c
d
e
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
Rx5RL
PIN CONFIGURATION
* TO-92 * SOT-89 * SOT-23-5
5 (mark side) (mark side)
4
(mark side)
1 1 2 3
2
3
1
2
3
PIN DESCRIPTION
* TO-92
Pin No. Symbol
* SOT-89
Pin No. Symbol
* SOT-23-5
Pin No. Symbol
1 2 3
GND VIN VOUT
1 2 3
GND VIN VOUT
1 2 3 4 5
GND VIN VOUT NC NC
3
Rx5RL
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating
Topt=25C
Unit
VIN VOUT IOUT PD1 PD2 Topt Tstg Tsolder
Input Voltage Output Voltage Output Current Power Dissipation 1 (NOTE1) Power Dissipation 2 (NOTE2) Operating Temperature Storage Temperature Lead Temperature (Soldering)
+12 -0.3 to VIN +0.3 150 300 150 - 40 to +85 - 55 to +125 260C,10s
V V mA mW mW C C
(NOTE 1) applied to SOT-89 and TO-92 (NOTE 2) applied to SOT-23-5
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
Rx5RL
ELECTRICAL CHARACTERISTICS
* Rx5RL20A
Symbol Item Conditions MIN. TYP. MAX.
Topt=25C
Unit
VOUT IOUT VOUT IOUT VDIF ISS VOUT VIN VIN VOUT Topt
Output Voltage Output Current Load Regulation Dropout Voltage Quiescent Current Line Regulation Input Voltage Output Voltage Temperature Coefficient
VIN=4.0V 10AIOUT10mA VIN=4.0V VIN=4.0V 1mAIOUT35mA IOUT=1mA VIN=4.0V IOUT=1mA VOUT+0.5VVIN10V
1.950 25
2.000 35 30 60 1.0 0.05
2.050
V mA
45 90 3.0 0.2 10
mV mV A %/V V ppm/C
IOUT=10mA -40CTopt85C
100
* Rx5RL30A Symbol Item Conditions MIN. TYP. MAX.
Topt=25C
Unit
VOUT IOUT VOUT IOUT VDIF ISS VOUT VIN VIN VOUT Topt
Output Voltage Output Current Load Regulation Dropout Voltage Quiescent Current Line Regulation Input Voltage Output Voltage Temperature Coefficient
VIN=5.0V 10AIOUT10mA VIN=5.0V VIN=5.0V 1mAIOUT50mA IOUT=1mA VIN=5.0V IOUT=1mA VOUT+0.5VVIN10V
2.925 35
3.000 50 40 40 1.1 0.05
3.075
V mA
60 60 3.3 0.2 10
mV mV A %/V V ppm/C
IOUT=10mA -40CTopt85C
100
5
Rx5RL
* Rx5RL40A
Symbol Item Conditions MIN. TYP. MAX.
Topt=25C
Unit
VOUT IOUT VOUT IOUT VDIF ISS VOUT VIN VIN VOUT Topt
Output Voltage Output Current Load Regulation Dropout Voltage Quiescent Current Line Regulation Input Voltage Output Voltage Temperature Coefficient
VIN=6.0V 10AIOUT10mA VIN=6.0V VIN=6.0V 1mAIOUT65mA IOUT=1mA VIN=6.0V IOUT=1mA VOUT+0.5VVIN10V
3.900 45
4.000 65 50 25 1.2 0.05
4.100
V mA
75 38 3.6 0.2 10
mV mV A %/V V ppm/C
IOUT=10mA -40CTopt85C
100
* Rx5RL50A
Symbol Item Conditions MIN. TYP. MAX.
Topt=25C
Unit
VOUT IOUT VOUT IOUT VDIF ISS VOUT VIN VIN VOUT Topt
Output Voltage Output Current Load Regulation Dropout Voltage Quiescent Current Line Regulation Input Voltage Output Voltage Temperature Coefficient
VIN=7.0V 10AIOUT10mA VIN=7.0V VIN=7.0V 1mAIOUT80mA IOUT=1mA VIN=7.0V IOUT=1mA VOUT+0.5VVIN10V
4.875 55
5.000 80 60 25 1.3 0.05
5.125
V mA
90 38 3.9 0.2 10
mV mV A %/V V ppm/C
IOUT=10mA -40CTopt85C
100
6
Rx5RL
* Rx5RL60A
Topt=25C
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
VOUT IOUT VOUT IOUT VDIF ISS VOUT VIN VIN VOUT Topt
Output Voltage Output Current Load Regulation Dropout Voltage Quiescent Current Line Regulation Input Voltage Output Voltage Temperature Coefficient
VIN=8.0V 10AIOUT10mA VIN=8.0V VIN=8.0V 1mAIOUT80mA IOUT=1mA VIN=8.0V IOUT=1mA VOUT+0.5VVIN10V
5.850 55
6.000 80 60 25 1.3 0.05
6.150
V mA
90 38 3.9 0.2 10
mV mV A %/V V ppm/C
IOUT=10mA -40CTOPt85C
100
7
Rx5RL
ELECTRICAL CHARACTEISTICS BY OUTPUT VOLTAGE
Output Voltage Part Number
Conditions
OutputCurrent IOUT(mA)
MAX. Conditions MIN. TYP.
Load Regulation
Dropout Voltage VDIF (mV)
VOUT(V)
MIN. TYP.
VOUT(mV)
Conditions TYP. MAX.
Conditions
TYP.
MAX.
Rx5RL20A Rx5RL21A Rx5RL22A Rx5RL23A Rx5RL24A Rx5RL25A Rx5RL26A Rx5RL27A Rx5RL28A Rx5RL29A Rx5RL30A Rx5RL31A Rx5RL32A Rx5RL33A Rx5RL34A Rx5RL35A VIN- Rx5RL36A VOUT Rx5RL37A Rx5RL38A =2.0V Rx5RL39A Rx5RL40A Rx5RL41A 10A IOUT Rx5RL42A Rx5RL43A 10mA Rx5RL44A Rx5RL45A Rx5RL46A Rx5RL47A Rx5RL48A Rx5RL49A Rx5RL50A Rx5RL51A Rx5RL52A Rx5RL53A Rx5RL54A Rx5RL55A Rx5RL56A Rx5RL57A Rx5RL58A Rx5RL59A Rx5RL60A
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
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
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 25 35 1mA IOUT 35mA 30 45
60
90
50
75
40 VIN- VOUT =2.0V 35 50 1mA IOUT VIN- VOUT =2.0V VIN- VOUT 45 65 =2.0V 1mA IOUT 65mA 50 70 50mA IOUT =1mA 30 40 60 35
60
53
45
25 VIN- VOUT =2.0V 55 80 1mA IOUT 80mA 60 90
38
8
Rx5RL
Topt=25C Quiescent Current Iss(A) Conditions TYP. Line Regulation VOUT/VIN(%/V) MAX. Conditions TYP. MAX. Input Voltage Output Voltage Tempco. VIN(V) MAX. VOUT/T(ppm/C) Conditions TYP.
1.0
3.0
1.1
3.3 IOUT =1mA IOUT =10mA 0.05 VOUT+ 0.5V VIN 0.2 10 -40C Topt 85C 100
VIN VOUT =2.0V
1.2
3.6
10V
1.3
3.9
9
Rx5RL
OPERATION
VIN Error Amplifire - + Vref R2 GND
FIG. 1 Brock Diagram
VOUT
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.
R1
GND
TEST CIRCUITS
VIN VIN
Rx5RL SERIES
VOUT
IOUT VOUT VIN
ISS VIN
Rx5RL SERIES
VOUT
CI 1F
+
GND
+ Co 1F
CI 1F
+
GND
FIG. 2 Test Circuit
FIG. 3 Quiescent Current Test Circuit
VIN
Rx5RL SERIES
VOUT
VOUT
P.G
GND Co 0.1F
+
Ro
FIG. 4 Line Transient Response Test Circuit
10
Rx5RL
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current Rx5RL30A
3.1 VIN=5.0V
4.1
Rx5RL40A
VIN=6.0V
Output Voltage VOUT(V)
3.0 Topt=-40C 2.9 85C
Output Voltage VOUT(V)
4.0
Topt=-40C
3.9
25C
85C
3.8
25C
2.8
2.7 0 20 40 60 80 100 120 140 Output Current IOUT(mA)
3.7 0 2 0 4 0 6 0 8 0 100 120 140 160 180
Output Current IOUT(mA)
Rx5RL50A
5.1
VIN=7.0V
Topt=-40C Output Voltage VOUT(V) 5.0
4.9 85C 4.8 25C
4.7 0 50 100 150 Output Current IOUT(mA) 200
2) Output Voltage vs. Input Voltage
3.2 3.0 2.8 2.6 10mA 2.4 5mA 2.2 2.5 3.0 Input Voltage VIN(V) 3.5 IOUT=1mA
Rx5RL30A Topt=25C
Rx5RL30A
3.05 3.04 Output Voltage VOUT(V) 3.03 3.02 3.01 3.00 2.99 2.98 2.97 2.96 2.95 3 4
Topt=25C IOUT=1mA
Output Voltage VOUT(V)
5 6 7 8 Input Voltage VIN(V)
9
10
11
Rx5RL
Topt=25C IOUT=1mA
Rx5RL40A
4.2 Output Voltage VOUT(V) 4.0 3.8 3.6 3.4 3.2
Topt=25C
4.05 4.04 Output Voltage VOUT(V) 4.03 4.02 4.01 4.00 3.99 3.98 3.97 3.96 3.95 4 5
Rx5RL40A
IOUT=1mA 5mA 10mA
3.5
4.0 Input Voltage VIN(V)
4.5
6 7 8 Input Voltage VIN(V)
9
10
Rx5RL50A
5.2 Output Voltage VOUT(V) 5.0 4.8 4.6 4.4 4.2
Topt=25C
Rx5RL50A
5.05 5.04 5.03 5.02 5.01 5.00 4.99 4.98 4.97 4.96 4.95
Topt=25C IOUT=1mA
IOUT=1mA 5mA 10mA
Output Voltage VOUT(V)
4.5
5.0 Input Voltage VIN(V)
5.5
5
6
9 7 8 Input Voltage VIN(V)
10
3) Dropout Voltage vs. Output Curret
2.0 1.8 Dropout Voltage VDIF(V) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 10 20 30 40 Output Current IOUT(mA) 50 Topt=- 40C 85C 25C
Rx5RL30A
2.0 1.8 Dropout Voltage VDIF(V) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0
Rx5RL40A
25C 85C
Topt=- 40C 10 20 30 40 Output Current IOUT(mA) 50
12
Rx5RL
2.0 Dropout Voltage VDIF(V) 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0
Rx5RL50A
10 20 30 40 Output Current IOUT(mA)
50
4) Output Voltage vs.Temperature Rx5RL30A
3.10 3.08 Output Voltage VOUT(V) 3.04 3.02 3.00 2.98 2.96 2.94 2.92 2.90 0 20 40 60 80 100 -40 -20 Temperature Topt(C) Output Voltage VOUT(V) 3.06 VIN=5.0V IOUT=10mA
Rx5RL40A
4.10 4.08 4.06 4.04 4.02 4.00 3.98 3.96 3.94 3.92
VIN=6.0V IOUT=10mA
3.90 20 40 60 80 100 -40 -20 0 Temperature Topt(C)
Rx5RL50A
5.10 5.08 5.06 Output Voltage VOUT(V) 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -40 -20
VIN=7.0V IOUT=10mA
0 20 40 60 80 100 Temperature Topt(C)
13
Rx5RL
5) Quiescent Current vs. Input Voltage Rx5RL30C
1.5 1.4 Quiescent Current Iss(A) 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 3 4 5 6 7 8 Input Voltage VIN(V) 9 10 Quiescent Current Iss(A) 1.3 Topt=25C 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 5
Rx5RL40A
Topt=25C
6 7 8 Input Voltage VIN(V)
9
10
2.0 1.9 Quiescent Current Iss(A) 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 4 5
Rx5RL50A
Topt=25C
6 7 8 Input Voltage VIN(V)
9
10
6) Quiescent Current vs. Temperature
1.5 1.4 Quiescent Current Iss(A) 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 -20 0 20 40 60 Temperature Topt(C) 80 100 Quiescent Current Iss(A) 1.3
Rx5RL30A
VIN=5.0V
Rx5RL40A
2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1
VIN=6.0V
1.0 20 40 60 80 100 -40 -20 0 Temperature Topt(C)
14
Rx5RL
Rx5RL50A
2.5 2.4 Quiescent Current Iss(A) 2.3
VIN=7.0V
7) Dropout Voltage vs. Set Output Voltage
0.7 0.6 Dropout Voltage VDIF(V) 0.5 0.4 0.3 IOUT=10mA 0.2 5mA 0.1 0.0 0 1 2 3 4 5 Set Output Voltage Vreg(V) 6 1mA
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 Input Voltage/Output Voltage(V) 7.5 7.0 6.5 6.0 5.5 Output Voltage 5.0 4.5 4.0 0 1 2 Time t(ms) 3 4 IOUT=1mA Input Voltage
9) Line Transient Response (2)
8.0 Input Voltage/Output Voltage(V) 7.5 7.0 6.5 6.0 5.5 Output Voltage 5.0 4.5 4.0 0 1 2 Time t(ms) 3 4 IOUT=10mA Input Voltage
15
Rx5RL
TYPICAL APPLICATION
In Rx5RL Series, a constant voltage can be obtained
VIN C1 VIN + Rx5RL SERIES GND VOUT + C2
without using Capacitors C1 and C2. However, when the
VOUT
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 0.1F to 2.0F between Input/Output Pins and GND Pin with minimum wiring.
GND
GND
APPLICATION CIRCUITS
* VOLTAGE BOOST CIRCUIT The output voltage can be obtained by the following formula :
VIN VIN Rx5RL SERIES GND + C1 ISS VOUT VOUT
*1 VOUT=Vreg * (1+R2/R1) + ISS R * 2 Since the quiescent current of Rx5RE Series is so small that the resistances of R1 and R2 can be set as large as several hundreds k and therefore the supply current of "Voltage Boost Circuit" itself can be
+ C2
R1
R2
reduced. Furthermore, since Rx5RL 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 Rx5RL Series.
* DUAL POWER SUPPLY CIRCUIT As shown in the circuit diagram, a dual power supIC1 VIN VIN Rx5RL20A C1 GND IC2 VIN Rx5RL30A C2 GND + GND GND C3 + R VOUT VOUT2 3V + D ISS VOUT VOUT1 5V
ply circuit can be constructed by using two Rx5RL 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
Rx5RL
* CURRENT BOOST CIRCUIT
Tr.1
Output current of 60mA or more can be obtained by the current boost circuit constructed as shown in this cirVIN
VIN C1 GND +
Rx5RL SERIES GND
VOUT VOUT + C2 GND
cuit diagram.
* CURRENT BOOST CIRCUIT WITH OVERCURRENT LIMIT CIRCUIT A circuit for protecting Tr.1 from the destruction
R2 Vbe2 Tr.2 VIN C1 GND GND + R1 VIN Rx5RL SERIES GND VOUT + VOUT C2 IOUT Tr.1
caused by output short-circuit or overcurrent is shown in 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 increased, so that the output current is limited. Current limit of Overcurrent Limit Circuit is obtained as follows : IOUT Vbe2/R2
* CURRENT SOURCE A current source with the structure as shown in this
IOUT VIN VIN Rx5RL SERIES GND VOUT R ISS
circuit diagram can be used. Output Current IOUT is obtained as follows : *1 IOUT= Vreg /R + ISS Take care that Output Current IOUT does not exceed its allowable current.
C1
+
*1) Vreg : Set Output Voltage of Rx5RL Series.
17

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