Overview
L7981ATR is listed in the Power Management category. Available datasheets include documents from STMicroelectronics.
Summary
3 A step-down switching regulator 01-Jul-2010
Description
The L7981 is a step down switching regulator with 3.7 A (minimum) current limited embedded power MOSFET, so it si 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 starting from 0.6 V to VIN. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz. The QFN and the HSOP packages with exposed pad allow reducing the RthJA down to 60°C/W and 40°C/W respectively.