Description

The L5986 is a step down switching regulator with 3.0 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2.5 A current to the load depending on the application conditions.

The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for 3.3 V bus.

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.

Features

■ 2.5 A DC output current

■ 2.9 V to 18 V input voltage

■ Output voltage adjustable from 0.6 V

■ 250 kHz switching frequency, programmable up to 1 MHz

■ Internal soft-start and inhibit

■ Low dropout operation: 100 duty cycle

■ Voltage feed-forward

■ Zero load current operation

■ Over current and thermal protection

■ VFQFPN3x3-8L and HSOP8 package

Application

■ Consumer:

STB, DVD, DVD recorder, car audio, LCD TV

and monitors

■ Industrial:

PLD, PLA, FPGA, chargers

■ Networking: XDSL, modems, DC-DC modules

■ Computer:

Optical storage, hard disk drive, printers,

audio/graphic cards

■ LED driving