LK112xx is a low dropout linear regulator with a built in electronic switch from ST company. Its features are output current up to 150mA, low dropout voltage (350mV@50mA), very low quiescent current (0.1µA@OFF, 250µA@ON), low output noise (typical 30µV@60mA, 10Hz
The LK112xx is a low dropout linear regulator with a built-in electronic switch controlled by TTL or CMOS logic levels. It utilizes an internal PNP pass transistor to achieve a low dropout voltage and includes internal current and thermal limit protection. The device features very low quiescent current, with a maximum of 250 µA in ON mode and 0.1 µA in OFF mode.
| Output current | 150 mA |
|---|---|
| Dropout voltage | 350 mV |
| Quiescent current (ON mode) | 250 µA |
| Quiescent current (OFF mode) | 0.1 µA |
| Output noise | 30 µVrms |
| Junction temperature limit | 150 °C |
| Package type | SOT23-5L |
The internal switch can be controlled by TTL or CMOS logic levels.
The device will shutdown in the presence of a short circuit or overcurrent condition at the output.