Datasheet > L6727_10

L6727_10

更新时间： 2024-11-30 11:35:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		控制器
页数	文件大小	规格书
34页	977K
描述
Single phase PWM controller

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L6727_10 数据手册

L6727

Single phase PWM controller

Feature

■ Flexible power supply from 5 V to 12 V

■ Power conversion input as low as 1.5 V

■ 1 % output voltage accuracy

■ High-current integrated drivers

■ Adjustable output voltage

SO-8

■ 0.8 V internal reference

■ Simple voltage mode control loop

■ Sensorless and programmable OCP across

Description

L6727 is a single-phase step-down controller with

integrated high-current drivers that provides

complete control logic, protections and reference

voltage to realize in an easy and simple way

general DC-DC converters by using a compact

SO-8 package.

Low-side R

dsON

■ Oscillator internally fixed at 300 kHz

■ Internal Soft-start

■ LS-LESS to manage pre-bias start-up

■ Disable function

Device flexibility allows managing conversions

■ OV / UV protection

with power input V as low as 1.5 V and device

supply voltage in the range of 5 V to 12 V.

■ FB disconnection protection

■ SO-8 package

L6727 provides simple control loop with voltage-

mode error-amplifier. The integrated 0.8 V

reference allows regulating output voltages with

1 % accuracy over line and temperature

Applications

variations. Oscillator is internally fixed to 300 kHz.

■ Subsystem power supply (MCH, IOCH, PCI...)

■ Memory and termination supply

■ CPU and DSP power supply

L6727 provides programmable over current

protection as well as over and under voltage

protection. Current information is monitored

■ Distributed power supply

across the low-side MOSFET R

saving the

dsON

■ General DC / DC converters

use of expensive and space-consuming sense

resistors while output voltage is monitored

through FB pin.

FB disconnection protection prevents excessive

and dangerous output voltages in case of floating

FB pin.

Table 1.

Device summary

Order codes

Package

Packaging

L6727

Tube

SO-8

L6727TR

Tape and reel

March 2010

Doc ID 12933 Rev 4

1/34

www.st.com

12 3 4 5 6 7...34

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