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RP112x Series

Low Noise 150mA LDO REGULATOR

Data Sheet / Flyer

The RP112x Series are CMOS-based voltage regulator (LDO) ICs, which have been developed using the CMOS process technology, with high output voltage accuracy, low-supply current, low On-resistance transistor, low noise output voltage and high ripple rejection. Each of the ICs is composed of the followings: a voltage reference unit, an error amplifier, a resistor-net for output voltage setting, a current limit circuit, and a chip enable circuit.

The RP112x features ultra low noise and its Ripple Rejection is as low as 80dB at f=1kHz, 75dB at f=10kHz and 65dB at f=100kHz. The Output Noise is also as low as Typ. 10μVrms. It is kept the low level at any Output Voltage. RP112x is suitable for the power source for the portable music player and RF module that demands for higher level of noise reduction. SOT-23-5 and SC-88A packages, a 1mm square DFN(PLP)1010-4 package are available.

Supply Current	Typ. 75µA
Standby Current	Typ. 0.1µA
Dropout Voltage	Typ. 0.20V (IOUT=150mA, VOUT=2.8V)
Ripple Rejection	Typ. 80dB (f=1kHz) Typ. 75dB (f=10kHz) Typ. 65dB (f=100kHz)
Output Voltage Accuracy	±1.0%
Output Voltage Temperature Coefficient	Typ. ±30ppm/°C
Line Regulation	Typ. 0.02%/V
Packages	DFN(PLP)1010-4, SC-88A, SOT-23-5
Input Voltage Range	2.0V to 5.25V
Output Voltage Range	1.2V to 4.8V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.)
Short Current Limit	Typ. 40mA
Built-in Fold Back Protection Circuit
Output Noise	Typ. 10µVrms
Ceramic capacitors are recommended to be used with this IC	1.0µF or more