RP112K121B_17 Datasheet, PDF (1/32 Pages) RICOH electronics devices division – Low Noise 150mA LDO REGULATOR

RP112x SERIES
Low Noise 150mA LDO REGULATOR
NO.EA-258-131024
OUTLINE
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.
FEATURES
• 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 Foldback Protection Circuit
• Output Noise .........................................................Typ. 10μVrms
• Ceramic capacitors are recommended to be used with this IC .....1.0μF or more
APPLICATIONS
• Power source for portable communication equipment.
• Power source for electrical appliances such as cameras,VCRs and camcorders.
• Power source for battery-powered equipments.
• Power source for electrical home appliances.
• Power source for the portable music player
• Power source for RF module
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