■ General Description
The LN1121 series are precise, low power consumption,  high voltage; positive voltage regulators manufactured  using CMOS and laser trimming technologies. The series  provides large currents with a significantly small dropout  voltage. The LN1121 consists of a current limiter circuit, a  driver transistor, a precision reference voltage and an error correction circuit. The series is compatible with low ESR  ceramic capacitors. The current limiter's feedback circuit  also operates as a short protect for the output current  limiter and the output pin. Output voltage can be set  internally by laser trimming technologies. It is selectable in  100mV increments within a range of 1.2V to 5.0V. SOT-89-3L, SOT-23-3L, SOT-353 and SOT-23-3B packages are available.
■ Features  
? Output Voltage Range: 1.2V to 5.0V (selectable in  100mV steps)
? Highly Accurate: 2%
? Dropout Voltage: 160mV @ 100mA (3.0V type)
? Low Power Consumption: 1μA (TYP.)
? Maximum Output Current : 250mA (Vin≥Vout+1V)
? Internal protector: current limiter and short protector
? Small packages
■ Applications
? Battery powered equipment  ? Reference voltage sources  ? Cameras, Video cameras  ? Mobile phones  ? Communication tools