VOL
TAGE REGULATOR
WITH EXTERNAL POWER TRANSISTOR
RN5RG SERIES
APPLICATION MANUAL
NO.EA-020-0006
VOLTAGE REGULATOR WITH
EXTERNAL POWER TRANSISTOR
RN5RG SERIES
OUTLINE
The RN5RG Series are voltage regulator ICs with an external power transistor with high output voltage accu-
racy and lowest supply current by CMOS process. Each of these voltage regulator ICs consists of a voltage refer-
ence unit, an error amplifier and resistors.
These ICs are suitable for constructing regulators with ultra-low dropout voltage and an output current in the
range of several tens mA to several hundreds mA.
Furthermore, these ICs have a chip enable function, so that the supply current on standby can be minimized.
Since the package for these ICs are SOT-23-5 (Mini-mold) package, high density mounting of the ICs
on boards is possible.
FEATURES
• Ultra-Low Supply Current ..............................TYP. 50µA
• Standby Mode.....................................................TYP. 0.2µA
• Ultra-Low Dropout Voltage .............................TYP. 0.1V (I
OUT
=100mA : dependent on External Tr.)
• 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%
• Small Package ..................................................SOT-23-5(Mini-Mold)
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for cameras, VCRs, camcorders, hand-held audio instruments, and hand-held communication
equipment.
• Power source for domestic appliances.
BLOCK DIAGRAM
V
DD
2
4
EXT
V
OUT
3
+
–
Vref
GND
1
CE
5
1
RN5RG
SELECTION GUIDE
The output voltage, the version, the packing type, and the taping type for the ICs can be selected at the user's
request.
The selection can be made by designating the part number as shown below :
RN5RG
××××
–
××
←
Part Number
}
}
↑ ↑↑
a bc
↑
d
Code
Contents
a
b
Setting Output Voltage (V
OUT
):
Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible.
A
Designation of Packing Type:
c
A: Taping
C: Antistatic bag for samples
Designation of Taping Type:
Ex.
TR, TL
d
(refer to Taping Specifications)
“TR” is prescribed as a standard.
For example, the product with Output Voltage 5.0V, Version A, and Taping Type TR is designated by Part
Number RN5RG50AA-TR.
2
RN5RG
PIN CONFIGURATION
•
SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
Description
1
2
3
4
5
GND
V
DD
V
OUT
EXT
CE
Ground Pin
Input Pin
Output Pin
External Transistor Drive Pin (Nch Open Drain Output)
Chip Enable Pin
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
IN
V
CE
V
EXT
I
EXT
P
D
Topt
Tstg
Tsolder
Input Voltage
Input Voltage (CE Pin)
EXT Output Voltage
EXT Output Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering)
+12
–0.3 to V
IN
+0.3
+12
50
150
–40 to +85
–55 to +125
260˚C,10s
V
V
V
mA
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.
3
RN5RG
ELECTRICAL CHARACTERISTICS
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
Topt=25˚C
Note
V
OUT
I
OUT
I
EXT
∆V
OUT
∆I
OUT
V
DIF
I
SS
Istandby
I
EXT
leak
∆V
OUT
∆V
IN
V
IN
V
EXT
∆V
OUT
∆Topt
V
CEH
V
CEL
I
CEH
I
CEL
(Note)
Output Voltage
Output Current
EXT Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
EXT Leakage Current
Line Regulation
Input Voltage
EXT Output Voltage
Output Voltage
Temperature Coefficient
CE Input Voltage “H”
CE Input Voltage “L”
CE Input Current “H”
CE Input Current “L”
V
IN
=8.0V
I
OUT
=50mA
V
IN
–V
OUT
=1.0V
V
IN
=4.0V, V
EXT
=2.0V
V
IN
–V
OUT
=1.0V
1mA≤I
OUT
≤100mA
I
OUT
=100mA
V
IN
–V
OUT
=1.0V
I
OUT
=0mA (at no load)
V
IN
=8V
×
0.975
1000
10
–60
100
50
0.01
0.2
V
OUT
×
1.025
V
OUT
V
mA
mA
Note
60
200
80
1.0
0.5
mV
mV
µA
µA
µA
%/V
V
V
ppm/˚C
V
I
OUT
=50mA
V
OUT
+0.5V≤V
IN
≤8V
0
0.1
0.3
8
8
I
OUT
=10mA
–40˚C≤Topt≤85˚C
1.5
±100
0.25
0
–5
–3
0.1
–0.1
V
µA
µA
*
)
The output current depends upon the performance of External PNP Transistor. Use External PNP Transistor of a low saturation type, with an h
FE
of 100 or more.
With respect to Test Circuits, refer to the Typical Application.
4
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