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R1112N Series

Data Sheet / Flyer

LOW NOISE 150mA LDO REGULATOR

The R1112N Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low supply current, low ON-resistance, and high Ripple Rejection. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors, a current limit circuit, and a chip enable circuit.

These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient response of the R1112N Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment.

The output voltage of these ICs is fixed with high accuracy. Since the package for these ICs is SOT-23-5 (Mini-mold) package, high density mounting of the ICs on boards is possible.

Supply Current	Typ. 100µA
Standby Current	Typ. 0.1µA
Dropout Voltage	Typ. 0.19V (IOUT=100mA 3.0V Output type)
Ripple Rejection	Typ. 80dB(f=1kHz)
Temperature-Drift Coefficient of Output Voltage	Typ. ±100ppm/°C
Line Regulation	Typ. 0.05%/V
Output Voltage Accuracy	±2.0%
Excellent Dynamic Response
Package	SOT-23-5(Mini-mold)
Output Voltage	1.5V to 5.0V (0.1V steps) For other voltages, please refer to MARK INFORMATIONS.)
Built-in chip enable circuit ( 2 types; A: active “Low”, B: active “High”)
Pin-out	Similar to the LP2980/LP2985
Built-in fold-back protection circuit	Typ.30mA (Current at short mode)
Ceramic capacitors recommended to be used with this IC