L7981 Datasheet - STMicroelectronics

L7981 3A step-down switching regulator

The L7981 device is a step-down switching regulator with a 3.7 A (minimum) current limited embedded Power MOSFET, so it is able to deliver up to 3 A current to the load depending on the application conditions. The input voltage can range from 4.5 V to 28 V, while the output voltage can be set starti.

L7981 Features

* 3 A DC output current

* 4.5 V to 28 V input voltage

* Output voltage adjustable from 0.6 V

* 250 kHz switching frequency, programmable up to 1 MHz

* Internal soft-start and enable

* Low dropout operation: 100% duty cycle

* Voltage feed-forward

* Zero load current op

L7981 Datasheet (1.08 MB)