RN5RF SERIES
LOW RIPPLE VOLTAGE REGULATOR WITH EXTERNAL TRANSISTOR
NO. EA-043-111116
OUTLINE
The RN5RF Series are CMOS-based voltage regulator ICs which control external driver transistors with high
ripple rejection, high accuracy output voltage, low supply current. Each of these voltage regulator ICs consists of
a voltage reference unit, an error amplifier, output voltage setting resistor, short circuit current limiting circuit and
chip enable circuit. These ICs are suitable for constructing regulators with ultra low dropout voltage and an
output current in the range of several tens of mA and several hundreds mA. In addition to low supply current by
CMOS process, chip enable function can be used to conserve battery life during standby.
Furthermore, a supreme ripple rejection and a transient response are suitable for portable communicator such
as cell phones, PDAs, walky talkies. SOT23-5 (Mini Mold) package is available.
FEATURES
•
•
•
•
•
•
•
•
Supply Current ............................................................. Typ. 30μA
Supply Current (Standby) ........................................... Typ. 0.1μA
Output Voltage Accuracy..............................................±2%
Ripple Rejection........................................................... Typ. 60dB (f=1kHz)
Dropout Voltage ........................................................... Typ. 0.1V (I
OUT
=100mA,
dependent on External Tr.)
Temperature-Drift Coefficient of Output Voltage .......... Typ.
±
100ppm/°C
Line Regulation ............................................................ Typ. 0.05%/V
Output Voltage Range.................................................. 1.2V to 6.0V (0.1V steps)
(
For other voltages, please refer to MARK INFORMATIONS.)
•
Package ....................................................................... SOT-23-5
•
Current Limit for external Tr. ........................................ Current limit Typ. 8mA
APPLICATIONS
•
Power source for battery-powered equipment
•
Power source for hand-held communication equipment, cameras, and VCRs
•
Power source for home appliances
1
RN5RF
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
EXT
I
EXT
P
D
T
opt
T
stg
Input Voltage
Input Voltage (
CE
or CE)
EXT Output Voltage
EXT Output Current
Power Dissipation
∗
Item
Rating
12.0
−0.3
to V
IN
+0.3
−0.3
to V
IN
+0.3
50
Unit
V
V
V
mA
mW
°C
°C
(SOT-23-5)
420
−40
to 85
−55
to 125
Operating Temperature Range
Storage Temperature Range
∗)
For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
4
RN5RF
ELECTRICAL CHARACTERISTICS
•
RN5RFxxA
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The output current depends on the performance of external PNP transistor. Use External PNP transis-
tor of a low saturation type, with an h
FE
between 100 and 300.
With respect to Test Circuit, refer to Typical Application.
4
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