L7986TA

L7986TA 3 A step-down switching regulator Datasheet − production data Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 3 A DC output current 4.5 V to 38 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 operation Overcurrent and thermal protection HSOP8 package Guarantee overtemperature range (-40 °C to 125 °C) HSOP8 exposed pad Description The L7986TA is a step-down switching regulator with 3.7 A (min.) 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 38 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 HSOP package with exposed pad allows the reduction of RthJA down to 40 °C/W. Applications ■ ■ ■ ■ ■ Automotive: – Car audio, car infotainment Industrial: – PLD, PLA, FPGA, chargers Networking: XDSL, modems, DC-DC modules Computer: – Optical storage, hard disk drive, printers LED driving October 2012 This is information on a product in full production. Doc ID 022098 Rev 3 1/43 www.st.com 43 Free Datasheet http://www.datasheet4u.com/ Contents L7986TA Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . ...