PM6681ATR datasheet(1/12 Pages) STMICROELECTRONICS

номер детали	PM6681ATR

подробное описание детали	Dual step-down controller with adjustable LDO

PDF	12 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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Target Specification

This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.

November 2006

Rev 1

1/12

12

PM6681A

Dual step-down controller with adjustable LDO

Features

■ 6V to 36V input voltage range

■ Adjustable output voltages

■ 0.9-3.3V LDO adjustable delivers 100mA peak

current

■ 5V LDO delivers 100mA peak current

■ 1.237V ±1% reference voltage available

■ NO RSENSE current sensing using low side

MOSFETs' RDS(on)

■ Negative current limit

■ Soft start internally fixed at 2ms

■ Soft output discharge

■ Latched UVP

■ Not-latched OVP

■ Selectable pulse skipping at light loads

■ Selectable minimum frequency(33kHz) in

pulse skip mode

■ 5mW maximum quiescent power

■ Indipendent power good signals

■ Output voltage ripple compensation

Applications

■ Embedded computer system

■ FPGA system power

■ Industrial applications on 24V

■ High performance and high density DC/DC

modules

Description

PM6681A is a dual step-down controller

specifically designed to provide extremely high

efficiency conversion, with lossless current

sensing technique. The constant on-time

architecture assures fast load transient response

and the embedded voltage feed-forward provides

nearly constant switching frequency operation. An

embedded integrator control loop compensates

the DC voltage error due to the output ripple.

Pulse skipping technique increases efficiency at

very light load. Moreover a minimum switching

frequency of 33kHz is selectable to avoid audio

noise issues. The PM6681A provides a selectable

switching frequency, allowing three different

values of switching frequencies for the two

switching sections. The output voltages OUT1

and OUT2 can be adjusted from 0.9V to 5V and

from 0.9V to 3.3V respectively. The device

provides also 2 LDOs, 5V fixed and 0.9V-3.3V

adjustable.

VFQFPN-32 (5mm x 5mm)

www.st.com

Order codes

Part number

Package

Packaging

PM6681A

VFQFPN-32 (5mm x 5mm)

Tube

PM6681ATR

VFQFPN-32 (5mm x 5mm)

Tape and Reel

Аналогичный номер детали - PM6681ATR

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	PM6681ATR	2Mb / 47P	Dual synchronous step-down controller with adjustable LDO 26-Jun-2008

More results

Аналогичное описание - PM6681ATR

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	L6910	453Kb / 21P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION Jul-2003
	L6732	794Kb / 33P	Adjustable step-down controller with synchronous rectification 26-Jun-2006
	L6730C	1Mb / 50P	Adjustable step-down controller with synchronous rectification 07-Jun-2006
	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification 29-May-2006
	PM6680A	1Mb / 48P	Dual synchronous step-down controller with adjustable output voltages plus LDO 17-Dec-2007
	L6732_0906	823Kb / 36P	Adjustable step-down controller with synchronous rectification 25-Sep-2006
	L6910G	1Mb / 26P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION May-2005
	PM6681A	2Mb / 47P	Dual synchronous step-down controller with adjustable LDO 26-Jun-2008
	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification 07-Dec-2009
	PM6686TR	1Mb / 50P	Dual step-down controller with adjustable voltages, adjustable LDO and auxiliary charge pump controller for notebook 23-Jul-2009

More results

PM6681ATR датащи(PDF) 1 Page - STMicroelectronics

PM6681ATR датащи(HTML) 1 Page - STMicroelectronics

Аналогичный номер детали - PM6681ATR

Аналогичное описание - PM6681ATR

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