L6728 datasheet(1/31 Pages) STMICROELECTRONICS

部件名	L6728

功能描述	Single phase PWM controller with Power Good

PDF	31 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 31 page

June 2008

Rev 3

1/31

1

L6728

Single phase PWM controller with Power Good

Features

■ Flexible power supply from 5 V to 12 V

■ Power conversion input as low as 1.5 V

■ 0.8 V internal reference

■ 0.8 % output voltage accuracy

■ High-current integrated drivers

■ Power Good output

■ Sensorless and programmable OCP across

low-side RDS(on)

■ OV / UV protections

■ VSEN disconnection protection

■ Oscillator internally fixed at 300 kHz

■ LSless to manage pre-bias start-up

■ Adjustable output voltage

■ Disable function

■ Internal soft-start

■ DFN10 package

Applications

■ Memory and termination supply

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

■ CPU and 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 DFN10 package.

Device flexibility allows managing conversions

with power input VIN as low as 1.5 V and device

supply voltage ranging from 5 V to 12 V.

L6728 provides simple control loop with voltage

mode EA. The integrated 0.8 V reference allows

regulating output voltages with ±0.8 % accuracy

over line and temperature variations. Oscillator is

internally fixed to 300 kHz.

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 RDS(on)

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.

DFN10

Table 1.

Device summary

Order codes

Package

Packaging

L6728

DFN10

Tube

L6728TR

Tape and 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 / 32P	Single phase PWM controller with PowerGOOD 17-Sep-2007
	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

More results

类似说明 - L6728

制造商	部件名	数据表	功能描述
STMicroelectronics	L6726A	436Kb / 24P	Single phase PWM controller 26-Oct-2006
	L6728	1Mb / 32P	Single phase PWM controller with PowerGOOD 17-Sep-2007
	L6726A	464Kb / 24P	Single phase PWM controller 30-Jul-2007
	L6728A	1Mb / 32P	High frequency single phase PWM controller with Power Good 01-Oct-2008
Microsemi Corporation	NX2305	579Kb / 19P	SINGLE SUPPLY 12V SYNCHRONOUS PWM CONTROLLER WITH NMOS LDO CONTROLLER, POWER GOOD & ENABLES
STMicroelectronics	L6726A	992Kb / 35P	Single phase PWM controller 23-Mar-2010
	L6727	980Kb / 34P	Single phase PWM controller 23-Mar-2010
	L6728AH	1Mb / 33P	High frequency single phase PWM controller with Power Good 20-May-2009
	L6728D	1Mb / 33P	Single-phase PWM controller with Power Good 03-Feb-2010
	L6728H	1Mb / 32P	Single phase PWM controller with Power Good 20-May-2009