R1111N Series


Data Sheet / Flyer
Data Sheet * Flyer

The R1111N 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 R1111N 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. 35µA
Standby Mode Typ. 0.1µA
Dropout Voltage Typ. 0.2V (IOUT=100mA)
Ripple Rejection Typ. 70dB(f=1kHz)
Output Voltage  1.5V to 5.0V (0.1V steps)
For other voltages, please refer to MARK INFORMATIONS.)
Output Voltage Accuracy ±2.0%
Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Line Regulation Typ. 0.05%/V
Package SOT-23-5
Built-in chip enable circuit ( 2 types; A: active “L”, B: active “H”)
Built-in Fold Back Protection Circuit Typ. 50mA (Current at short mode)
Pin-out Similar to the LP2980
  • Power source for cellular phones such as GSM, CDMA and various kinds of PCSs.
  • Power source for electrical appliances such as cameras, VCRs and camcorders.
  • Power source for battery-powered equipment.
Data Sheet Flyer Package Info. Mark Info. Quality Assurance Data
R1111N Series R1111N/
R1121N Series
SOT-23-5 R1111N Reliability

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