ST L5986

Step-DownБак2.9V18V2.5A

Overview

Description The L5986 is a step-down switching regulator with a 3.0 A (min.) current limited embedded Power MOSFET, so it is ableto 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 a 3.3 V bus. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator thatcan be externally adjusted up to 1 MHz. The QFN and the HSOP packages with an 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 feedforward Zero load current operation Overcurrent and thermal protection VFQFPN 3 x 3 mm -8L and HSOP8 package

Features

• Internal soft-start and inhibit

• Low dropout operation: 100% duty cycle

• Voltage feedforward

• Zero load current operation

• Overcurrent and thermal protection

• VFQFPN 3 x 3 mm -8L and HSOP8 package

• 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

Applications

• Computer: optical storage, hard disk drive, printers, audio/graphic cards

• LED driving

• Industrial: chargers, PLD, PLA, FPGA

• Networking: XDSL, modems, DC-DC modules

• Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors