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R1122N Series

LOW NOISE 150mA LDO REGULATOR

Data Sheet / Flyer

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"RP112x", "RP130x". ⇒Comparison List

The R1122N 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 R1122N 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 Mode 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%
Output Voltage Range	1.5V to 5.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.)
Package	SOT-23-5(Mini-mold)
Built-in chip enable circuit ( 2 types; A: active “Low”, B: active “High”)
Built-in fold-back protection circuit	Short Current Typ. 30mA
Pinout	Similar to the TK112, TK111 l
Ceramic Capacitors Recommended to be used with this IC