L6728 datasheet(1/32 Pages) STMICROELECTRONICS

部件名	L6728

功能描述	Single phase PWM controller with PowerGOOD

PDF	32 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 32 page

September 2007

Rev 2

1/32

1

L6728

Single phase PWM controller with PowerGOOD

Features

■ Flexible power supply from 5V to 12V

■ Power conversion input as low as 1.5V

■ 0.8V internal reference

■ 0.8% output voltage accuracy

■ High-Current integrated drivers

■ PowerGOOD output

■ Sensorless and programmable OCP across

Low-Side RdsON

■ OV / UV protections

■ VSEN disconnection protection

■ Oscillator internally fixed at 300kHz

■ LS-LESS to manage pre-bias start-up

■ Adjustable output voltage

■ Disable function

■ Internal Soft-Start

■ VFQFPN 10 package

Applications

■ Memory and termination supply

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

■ CPU & DSP power supply

■ Distributed power supply

■ General DC / DC converters

Description

L6728 is a single-phase step-down controller with

integrated high-current drivers that provides

complete control logic and protection to realize in

a simple way general DC-DC converters by using

a compact VFQFPN 10 package.

Device flexibility allows managing conversions

with power input VIN as low as 1.5V and device

supply voltage ranging from 5V to 12V.

L6728 provides simple control loop with voltage

mode EA. The integrated 0.8V reference allows

regulating output voltages with ±0.8% accuracy

over line and temperature variations. Oscillator is

internally fixed to 300kHz.

L6728 provides programmable dual level over

current protection as well as over and under

voltage protection. Current information is

monitored across the Low-Side MOSFET RdsON

saving the use of expensive and space-

consuming sense resistors.

PGOOD output easily provides real-time

information on Output Voltage status, through

VSEN dedicated output monitor.

VFQFPN 10

Table 1.

Device summary

Order codes

Package

Packaging

L6728

VFQFPN 10

Tube

L6728TR

VFQFPN 10

Tape & Reel

www.st.com

类似零件编号 - L6728

制造商	部件名	数据表	功能描述
STMicroelectronics	L6728	1Mb / 31P	Single phase PWM controller with Power Good 05-Jun-2008
	L6728A	1Mb / 32P	High frequency single phase PWM controller with Power Good 01-Oct-2008
	L6728AH	1Mb / 33P	High frequency single phase PWM controller with Power Good 20-May-2009
	L6728AHTR	1Mb / 33P	High frequency single phase PWM controller with Power Good 20-May-2009
	L6728ATR	1Mb / 32P	High frequency single phase PWM controller with Power Good 01-Oct-2008

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类似说明 - L6728

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