Datasheet > L6739

L6739

更新时间： 2024-09-10 14:58:03

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
30页	743K
描述
单相PWM控制器，支持轻载效率优化

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中文翻译

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L6739 数据手册

L6739

Single-phase PWM controller with light-load efficiency optimization

Datasheet - production data

Applications

 Memory and termination supply

 Subsystem power supply (MCH, IOCH, PCI)

 CPU and DSP power supply

 Distributed power supply

 General DC-DC converter

VFQFPN16

Description

The L6739 is a single-phase step-down controller

with integrated high current drivers that provides

complete control logic and protection to realize

a DC-DC converter.

Features

 Flexible power supply from 5 V to 12 V bus

The device flexibility allows to manage

 Power conversion input as low as 1.5 V

 Light-load efficiency optimization

 Embedded bootstrap switch

 VIN detector

conversions with power input V as low as 1.5 V

and the device supply voltage ranging from 5 V to

12 V bus.

The L6739 device features a proprietary algorithm

that allows light-load efficiency optimization,

boosting efficiency without compromising the

output voltage ripple.

 0.8 V internal reference

 0.5% output voltage accuracy

 Remote GND recovery

The integrated 0.8 V reference allows generation

of output voltages with ± 0.5% accuracy over line

and temperature variations.

 High current integrated drivers

 Sensorless and programmable precise-OC

sense across inductor DCR

The oscillator is programmable up to 600 kHz.

 OV protection

The L6739 provides a programmable overcurrent

protection and overvoltage protection. The current

information is monitored across the inductor DCR.

 Overtemperature protection

 Programmable oscillator up to 600 kHz

 LS-less to manage pre-bias startup

 Adjustable output voltage

 Disable function

The L6739 device is available in a VFQFPN 16 -

3 x 3 mm package.

Table 1. Device summary

 Internal soft-start

Order code

Package

Packing

 VFQFPN 16 - 3 x 3 mm package

VFQFPN16

Tape and reel

L6739TR

May 2014

DocID026384 Rev 1

1/30

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...30

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