Datasheet > L5980_08

L5980_08

更新时间： 2024-09-23 03:49:47

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
37页	1178K
描述
0.7 A step-down switching regulator

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L5980_08 数据手册

L5980

0.7 A step-down switching regulator

Features

■ 0.7 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

VFQFPN8 3 x 3 mm

■ Internal soft-start and inhibit

■ Low dropout operation: 100 % duty cycle

■ Voltage feed-forward

Description

The L5980 is step down switching regulator with

1 A (min.) current limited embedded power

MOSFET, so it is able to deliver in excess of 0.7 A

DC current to the load depending on the

application condition.

■ Zero load current operation

■ Over current and thermal protection

■ VFQFPN8 3 x 3 mm package

Applications

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

while the output voltage can be set starting from

■ Consumer: STB, DVD, DVD recorder, car

0.6 V to V . Having a minimum input voltage of

audio, LCD TV and monitors

2.9 V, the device is suitable also for 3.3 V bus.

■ Industrial: Chargers, PLD, PLA, FPGA

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.

■ Networking: XDSL, modems, DC-DC modules

■ Computer: Optical storage, hard disk drive,

printers, audio/graphic cards

■ LED driving

The FVQFPN package with exposed pad allows

reducing the R

60 °C/W.

down to approximately

thJA

Figure 1.

Application circuit

September 2008

Rev 3

1/37

www.st.com

12 3 4 5 6 7...37

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