RN5RF SERIES

LOW RIPPLE VOLTAGE REGULATOR WITH EXTERNAL TRANSISTOR

NO. EA-043-111116

1

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)

• 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)

• 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