L6739 datasheet(1/30 Pages) STMICROELECTRONICS

部件名	L6739

功能描述	CPU and DSP power supply

PDF	30 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 30 page

This is information on a product in full production.

May 2014

DocID026384 Rev 1

1/30

L6739

Single-phase PWM controller with light-load efficiency optimization

Datasheet

- production data

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 switch

 VIN detector

 0.8 V internal reference

 0.5% output voltage accuracy

 Remote GND recovery

 High current integrated drivers

 Sensorless and programmable precise-OC

sense across inductor DCR

 OV protection

 Overtemperature protection

 Programmable oscillator up to 600 kHz

 LS-less to manage pre-bias startup

 Adjustable output voltage

 Disable function

 Internal soft-start

 VFQFPN 16 - 3 x 3 mm package

Applications

 Memory and termination supply

 Subsystem power supply (MCH, IOCH, PCI)

 CPU and DSP power supply

 Distributed power supply

 General DC-DC converter

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.

The device flexibility allows to manage

conversions with power input VIN 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.

The integrated 0.8 V reference allows generation

of output voltages with ± 0.5% accuracy over line

and temperature variations.

The oscillator is programmable up to 600 kHz.

The L6739 provides a programmable overcurrent

protection and overvoltage protection. The current

information is monitored across the inductor DCR.

The L6739 device is available in a VFQFPN 16 -

3 x 3 mm package.

VFQFPN16

Table 1. Device summary

Order code

Package

Packing

L6739TR

VFQFPN16

Tape and reel

www.st.com

类似零件编号 - L6739

制造商	部件名	数据表	功能描述
STMicroelectronics	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification 29-May-2006
	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification 07-Dec-2009
	L6730B	1Mb / 52P	Adjustable step-down controller with synchronous rectification 29-May-2006
	L6730B	1Mb / 52P	Adjustable step-down controller with synchronous rectification 07-Dec-2009
	L6730BTR	1Mb / 52P	Adjustable step-down controller with synchronous rectification 29-May-2006

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