Datasheet > L5985

L5985

更新时间： 2024-01-05 21:36:58

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器开关
页数	文件大小	规格书
36页	957K
描述
2A step-down switching regulator

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L5985 数据手册

L5985

2A step-down switching regulator

Features

■ 2A DC output current

■ 2.9V to 18V input voltage

■ Output voltage adjustable from 0.6V

■ 250KHz switching frequency, programmable

VFQFPN8 3x3

up to 1MHz

■ Internal Soft-start and Inhibit

■ Low dropout operation: 100% duty cycle

■ Voltage feed-forward

Description

The L5985 is a step down switching regulator with

2.5A current limited embedded power MOSFET,

so it is able to deliver up to 2A DC current to the

load depending on the application condition.

■ Zero load current operation

■ Over current and thermal protection

■ VQFN3x3-8L package

The input voltage can range from 2.9V to 18V,

while the output voltage can be set starting from

Applications

0.6V to V . Having a minimum input voltage of

2.9V, the device is suitable for buses staring from

for 3.3V bus.

■ Consumer:

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

and monitors

Requiring a minimum set of external components,

the device includes an internal 250KHz switching

frequency oscillator that can be externally

adjusted up to 1MHz.

■ Industrial:

Chargers, car battery, PLD, PLA, FPGA

■ Networking: XDSL, modems, DC-DC modules

The QFN package with exposed pad allows

■ Computer:

reducing the R

60°C/W.

down to approximately

thJA

Optical storage, hard disk drive, printers,

audio/graphic cards

Figure 1. Application circuit

October 2007

Rev 2

1/36

www.st.com

12 3 4 5 6 7...36

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