SPX1121

5.0V and 3.3V output versions
1% Output Accuracy
Very Low Quiescent Current
Low Dropout: 300mV @ 150mA
Very Tight Load & Line Regulation
Very Low Temperature Coefficient
Current and Thermal Limiting
Requires only 1µF for Stability
Equivalent Replacement for LT1121
Industry Standard SOT-223 and TO-92 3 lead packages

The SPX1121 is a low power voltage regulator. It is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX1121 features very low quiescent current and low dropout voltage (typ. 20mV at 100µA and 300mV at 150mA). A tight initial tolerance (1%), extremely good load and line regulation (0.05% typ.), and very low output temperature coefficient (20  ppm/°C typ.), make the SPX1121 useful as a low power voltage reference.