L6728D datasheet(1/33 Pages) STMICROELECTRONICS

部品番号	L6728D

部品情報	Single-phase PWM controller with Power Good

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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February 2010

Doc ID 16498 Rev 1

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33

L6728D

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 protection

■ VSEN disconnection protection

■ Oscillator internally fixed at 300 kHz

■ LSLess to manage pre-bias startup

■ Adjustable output voltage

■ Disable function

■ Internal soft-start

■ DFN10 package

Applications

■ Memory and termination supply

■ Subsystem power supply (MCH, IOCH, PCI,

etc.)

■ CPU and DSP power supply

■ Distributed power supply

■ General DC-DC converters

Description

L6728D is a single-phase step-down controller

with integrated high-current drivers that provides

complete control logic and protection to simplify

the design of general DC-DC converters by using

a compact DFN10 package.

Device flexibility allows the management of

conversions with power input (VIN) as low as

1.5 V, and device supply voltage ranging from 5 V

to 12 V.

The L6728D provides a simple control loop with

voltage mode EA. The integrated 0.8 V reference

allows output voltages regulation with ±0.8%

accuracy over line and temperature variations.

The oscillator is internally fixed to 300 kHz.

The L6728D provides programmable dual level

overcurrent protection, as well as overvoltage and

undervoltage protection. Current information is

monitored across the low-side MOSFET RDS(on),

eliminating the need for expensive and space-

consuming sense resistors.

A PGOOD output easily provides real-time

information on output voltage status, through the

VSEN dedicated output monitor.

DFN10

Table 1.

Device summary

Order codes

Package

Packaging

L6728D

DFN10

Tube

L6728DTR

Tape and reel

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同様の部品番号 - L6728D

メーカー	部品番号	データシート	部品情報
STMicroelectronics	L6728	1Mb / 32P	Single phase PWM controller with PowerGOOD 17-Sep-2007
	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

More results

同様の説明 - L6728D

メーカー	部品番号	データシート	部品情報
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
	L6728_0706	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
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
	L6728H	1Mb / 32P	Single phase PWM controller with Power Good 20-May-2009