L6738ATR

更新时间： 2024-12-01 13:09:15

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
32页	784K
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中文翻译

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数据手册

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L6738ATR 数据手册

L6738

Single-phase PWM controller

with light-load efficiency optimization

Features

■ Flexible power supply from 5 V to 12 V bus

■ Power conversion input as low as 1.5 V

■ Light-load efficiency optimization

■ Embedded bootstrap diode

■ VIN detector

■ 0.8 V internal reference

■ 0.5 % output voltage accuracy

■ Remote GND recovery

VFQFPN16

■ High-current integrated drivers

and the device supply voltage ranging from 5 V to

12 V bus.

■ Sensorless and programmable precise-OC

sense across Inductor DCR

■ OV protection

The L6738 features a proprietary algorithm that

allows Light-Load efficiency optimization,

boosting efficiency without compromising the

output voltage ripple.

■ Programmable oscillator up to 600 kHz

■ LS-less to manage pre-bias startup

■ Adjustable output voltage

■ Disable function

The integrated 0.8 V reference allows generation

of output voltages with 0.5 % accuracy over line

and temperature variations.

■ Internal soft-start

■ VFQFPN 16 3x3 mm package

The oscillator is programmable up to 600 kHz.

The L6738 provides a programmable dual level

overcurrent protection and overvoltage protection.

The current information is monitored across the

inductor DCR.

Applications

■ Memory and termination supply

■ Subsystem power supply (MCH, IOCH, PCI)

■ CPU and DSP power supply

■ Distributed power supply

The L6738 is available in a VFQFPN 16 3x3 mm

package.

Table 1.

Order code

L6738

L6738TR

Device summary

■ General DC-DC converter

Package

Packing

Description

VFQFPN16

Tube

The L6738 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.

Tape and reel

The device flexibility allows to manage

conversions with power input V as low as 1.5 V

November 2010

Doc ID 18133 Rev 1

1/32

www.st.com

12 3 4 5 6 7...32

中文翻译

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