ULTRA SMALL PACKAGE VOLTAGE
REGULATOR
RX5RW SERIES
1
OUTLINE
The RX5RW Series are CMOS-based voltage regulator ICs with high accuracy output voltage and
ultra-low supply current developed. Each of these ICs consists of a driver transistor, a voltage refer-
ence unit, an error amplifier, resistors for setting output volt-age and a current limit circuit.
The output voltage of these ICs is fixed with high accuracy.
Even if VOUT is shorted to GND, the included current limit circuit protects the ICs from the destruc-
tion. Furthermore, RX5RWxxA/B have a chip enable function, so that the supply current on standby
can be minimized.
Since the packages for these ICs are SC-82AB (Super Mini-mold) package and SON1612-6(Under
Development), high density mounting of the ICs on boards is possible.
FEATURES
• Ultra-Low Supply Current ..................................Typ. 1.5µA
(except pull-up/pull-down current for CE
/CE pin)
• Standby Current .................................................Typ. 0.1µA
• Dropout Voltage ..................................................Typ. 40mV (IOUT=1mA, RX5RW30A/B)
• Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
• Excellent Line Regulation ...................................Typ. 0.05%/V
• High Accuracy Output Voltage ...........................±2.0%
• Ultra-Small Package ...........................................SC-82AB, SON1612-6(Under Development)
• Built-in Current Limit Circuits
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for cameras, VCRs, camcorders, hand-held audio instruments and hand-held commu-
nication equipment.
• Precision voltage references.
RX5RW
2
BLOCK DIAGRAMS
RQ5RWxxA RQ5RWxxB
RQ5RWxxC
SELECTION GUIDE
The output voltage, the active type, and the packing 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:
RX5RW xxxx-xx ←Part Number
↑ ↑ ↑↑ ↑
ab cd e
Code Contents
aDesignation of Package Type
Q: SC82-AB D:SON1612-6(Under Development)
bSetting Output Voltage (VOUT):
Stepwise setting with a step of 0.1V in the range of 1.5V to 6.0V is possible.
cDesignation of Chip enable Active Type:
A: “L” active type C: no chip enable type
B: “H” active type
dDesignation of Packing Type:
A: Taping
B: Antistatic bag (for Sample only)
eDesignation of Taping Type: TR (refer to Taping Specifications)
RX5RW
3
PIN CONFIGURATION
●SC82-AB ●SON1612-6(Under Development)
6 5 4
1 2 3
PIN DESCRIPTION
RQ5RW
Pin No. Symbol Pin Description
1GND Ground Pin
2VDD Input Pin
3VOUT Output Pin
4CE or CE or
NC Chip Enable Pin or No Connection
RD5RW (Under Development)
Pin No. Symbol Pin Description
1CE or CE or
NC Chip Enable Pin or No Connection
2VDD Input Pin
3VOUT Output Pin
4NC No Connection
5VDD Input Pin
6GND Ground Pin
RX5RW
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VIN Input Voltage 9V
VCE Input Voltage for CE /CE Pin -0.3 to VIN +0.3 V
VOUT Output Voltage -0.3 to VIN +0.3 V
IOUT Output Current 150 mA
Power Dissipation(SC82-AB) 150
PDPower Dissipation(SON1612-6)-
(Under development) 500*Note1 mW
Topt Operating Temperature –40 to +85 °C
Tstg Storage Temperature –55 to +125 °C
*Note 1: This specification is at mounted on board.
PD depends on conditions of mounting on board. This specification is based on the measure-
ment at the condition below:
*Measurement Conditions
Environment: Mounted on board (Wind velocity 0m/s)
Board Material: FR-4 (2-layer)
Board dimensions: 40mm x 40mm x t1.6mm
Copper Area: 50%
0
100
200
300
400
500
600
700
0 25 50 75 100 125
Temperature Topt(°C)
P
D
(mW)
RX5RW
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.
RX5RW
6
ELECTRICAL CHARACTERISTICS
• RX5RW30A
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN=5.0V
10µA≤IOUT≤10mA 2.940 3.000 3.060 V
IOUT Output Current VIN=5.0V 50 mA
∆VOUT/∆IOUT Load Regulation VIN=5.0V, 1mA≤IOUT≤50mA 40 60 mV
VDIF Dropout Voltage IOUT=1mA 40 60 mV
ISS Supply Current VIN=5.0V 1.5 3.0 µA
Istandby Standby Current VIN=5.0V, VCE=5.0V 0.1 1.0 µA
∆VOUT/∆VIN Line Regulation IOUT=1mA
VOUT+0.5V≤VIN≤8V 0.00 0.05 0.20 %/V
VIN Input Voltage 8.0 V
∆VOUT/∆Topt Output Voltage Tem-
perature Coefficient IOUT=10mA
-40°C≤Topt≤85°C ±100 ppm/
°C
Ilim Short Current Limit VOUT=0V 40 mA
RPU Pull up resistance for
CE pin 1.5 4.0 12.0 MΩ
VCEH CE Input Voltage “H”1.5 V
VCEL CE Input Voltage “L”0.25 V
RX5RW
7
• RX5RW30B
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN=5.0V
10µA≤IOUT≤10mA 2.940 3.000 3.060 V
IOUT Output Current VIN=5.0V 50 mA
∆VOUT/∆IOUT Load Regulation VIN=5.0V
1mA≤IOUT≤50mA 40 60 mV
VDIF Dropout Voltage IOUT=1mA 40 60 mV
ISS Supply Current VIN=5.0V 1.5 3.0 µA
Istandby Standby Current VIN=5.0V, VCE=GND 0.1 1.0 µA
∆VOUT/∆VIN Line Regulation IOUT=1mA
VOUT+0.5V≤VIN≤8V 0.00 0.05 0.20 %/V
VIN Input Voltage 8.0 V
∆VOUT/∆Topt Output Voltage Tem-
perature Coefficient IOUT=1mA
-40°C≤Topt≤85°C ±100 ppm/
°C
Ilim Short Current Limit VOUT=0V 40 mA
RPD Pull down resistance
for CE pin 1.5 4.0 12.0 MΩ
VCEH CE Input Voltage “H”1.5 V
VCEL CE Input Voltage “L”0.25 V
• RX5RW30C
Symbol Item Conditions Min. Typ. Max. Unit
VOUT Output Voltage VIN=5.0V
10µA≤IOUT≤10mA 2.940 3.000 3.060 V
IOUT Output Current VIN=5.0V 50 mA
∆VOUT/∆IOUT Load Regulation VIN=5.0V
1mA≤IOUT≤50mA 40 60 mV
VDIF Dropout Voltage IOUT=1mA 40 60 mV
ISS Supply Current VIN=5.0V 1.5 3.0 µA
∆VOUT/∆VIN Line Regulation IOUT=1mA
3.5V≤VIN≤8.0V 0.00 0.05 0.20 %/V
VIN Input Voltage 8.0 V
∆VOUT/∆Topt Output Voltage Tem-
perature Coefficient IOUT=10mA
-40°C≤Topt≤85°C±100
ppm/
°C
Ilim Short Current Limit 40 mA
RX5RW
8
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE Topt=25°C
Output Vol tage Output Current Load Regulation Dropout Voltage
VOUT (V) IOUT (mA)
∆
VOUT/
∆
IOUT (mV) VDIF (mV)Part
Number Condi-
tions
Min. Typ. Max. Condi-
tions
Min. Typ. Condi-
tions
Typ. Max. Condi-
tions
Typ. Max.
RX5RW15
1.470
1.500
1.530
120 200
RX5RW16
1.568
1.600
1.632
RX5RW17
1.666
1.700
1.734
RX5RW18
1.764
1.800
1.836
RX5RW19
1.862
1.900
1.938
90 135
RX5RW20
1.960
2.000
2.040
RX5RW21
2.058
2.100
2.142
RX5RW22
2.156
2.200
2.244
RX5RW23
2.254
2.300
2.346
60 90
RX5RW24
2.352
2.400
2.448
RX5RW25
2.450
2.500
2.550
RX5RW26
2.548
2.600
2.652
RX5RW27
2.646
2.700
2.754
50 75
RX5RW28
2.744
2.800
2.856
RX5RW29
2.842
2.900
2.958
35
VIN-
VOUT =
2.0V
1mA≤
IOUT ≤
35mA
30 45
RX5RW30
2.940
3.000
3.060
RX5RW31
3.038
3.100
3.162
40 60
RX5RW32
3.136
3.200
3.264
RX5RW33
3.234
3.300
3.366
RX5RW34
3.332
3.400
3.468
RX5RW35
3.430
3.500
3.570
35 55
RX5RW36
3.528
3.600
3.672
RX5RW37
3.626
3.700
3.774
RX5RW38
3.724
3.800
3.876
RX5RW39
3.822
3.900
3.978
50
VIN-
VOUT =
2.0V
1mA≤
IOUT ≤
50mA
40 60
30 45
RX5RW40
3.920
4.000
4.080
RX5RW41
4.018
4.100
4.182
RX5RW42
4.116
4.200
4.284
RX5RW43
4.214
4.300
4.386
RX5RW44
4.312
4.400
4.488
RX5RW45
4.410
4.500
4.590
RX5RW46
4.508
4.600
4.692
RX5RW47
4.606
4.700
4.794
RX5RW48
4.704
4.800
4.896
RX5RW49
4.802
4.900
4.998
65
VIN-
VOUT =
2.0V
1mA≤
IOUT ≤
65mA
50 70
RX5RW50
4.900
5.000
5.100
RX5RW51
4.998
5.100
5.202
RX5RW52
5.096
5.200
5.304
RX5RW53
5.194
5.300
5.406
RX5RW54
5.292
5.400
5.508
RX5RW55
5.390
5.500
5.610
RX5RW56
5.488
5.600
5.712
RX5RW57
5.586
5.700
5.814
RX5RW58
5.684
5.800
5.916
RX5RW59
5.782
5.900
6.018
RX5RW60
VIN-
VOUT =
2.0V
10µA≤
IOUT ≤
10mA
5.880
6.000
6.120
VIN-
VOUT =
2.0V
80
VIN-
VOUT =
2.0V
1mA≤
IOUT ≤
80mA
60 90
IOUT =
1mA
25 40
RX5RW
9
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
(common characteristics)
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
ISS Supply Current VIN=setVOUT+2.0V 1.5 3.0 µA
Istandby Standby Current VIN=setVOUT+2.0V
VCE=VIN (RX5RWxxA),
VCE=GND (RX5RWxxB) 0.1 1.0 µA
∆VOUT/∆VIN Line Regulation IOUT=1mA
setVOUT+0.5V≤VIN≤8V 0.00 0.05 0.20 %/V
VIN Input Voltage 8.0 V
∆VOUT/∆Topt Output Voltage Tem-
perature Coefficient IOUT=10mA
-40°C≤Topt≤85°C ±100 ppm/
°C
Ilim Short Current Limit VOUT=0V 40 mA
RPU/RPD CE Pull-up / CE Pull-
down Resistance applied to A/B version 1.5 4.0 12.0 MΩ
VCEH CE /CE Input Voltage
“H”applied to A/B version 1.5 V
VCEL CE /CE Input Voltage
“L”applied to A/B version 0.25 V
OPERATION RQ5RWxxB
In these ICs, output voltage VOUT is detected by Feedback Registers R1, R2, and the detected output
voltage is compare with a reference voltage by the error amplifier, so that a constant voltage is output.
A current limit circuit working for short protect, and a chip enable circuit are included.
RX5RW
10
TEST CIRCUITS
Standard Test Circuit Test Circuit for Supply Current
Test Circuit for Ripple Rejection and Line
Transient Response
Test Circuit for Load Transient Response
RX5RW
11
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
RX5RW30B RX5RW30B
RX5RW40B RX5RW40B
RX5RW50B RX5RW50B
RX5RW
12
2) Output Voltage vs. Input Voltage
RX5RW30B RX5RW30B
RX5RW40B RX5RW40B
RX5RW50B RX5RW50B
RX5RW
13
3) Dropout Voltage vs. Output Current
RX5RW30B RX5RW40B
RX5RW50B
4) Output Voltage vs. Temperature
RX5RW30B RX5RW40B
RX5RW
14
RX5RW50B
5) Supply Current vs. Input Voltage
RX5RW30B RX5RW40B
RX5RW50B
RX5RW
15
6) Supply Current vs. Temperature
RX5RW30B RX5RW40B
RX5RW50B
7) Dropout Voltage vs. Set Output Voltage
RX5RWxxB
RX5RW
16
8) Line Transient Response
RX5RW30B RX5RW30B
RX5RW40B RX5RW40B
RX5RW50B RX5RW50B
RX5RW
17
9) Load Transient Response
RX5RW30B
RX5RW40B
RX5RW50B
RX5RW
18
10) Ripple Rejection
RX5RW30B RX5RW40B
RX5RW50B
RX5RW
19
TYPICAL APPLICATION
In RX5RW Series, a constant voltage can be obtained without using capacitors, C1 and C2. However,
when the wire connected VIN is long, use capacitor C1. Output noise can be reduced with using ca-
pacitor 2.
Insert capacitors C1 and C2 with the capacitance of 0.1µF to 0.22µF between input/output pins and
GND pin with minimum wiring.
