PM6685 datasheet(1/52 Pages) STMICROELECTRONICS

부품명	PM6685

상세설명	Dual step-down main supply controller with auxilary voltages for notebook system power

PDF	52 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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1 / 52 page

October 2007

Rev 7

1/52

52

PM6685

Dual step-down main supply controller

with auxilary voltages for notebook system power

Features

■ 6V to 28V input voltage range

■ Fixed 5V - 3.3V output voltages

■ 5V and 3.3V voltage always available to deliver

100mA of peak current

■ 1.237V ±1% reference voltage available

■ Lossless current sensing using low side

■ MOSFETs' RDS(on)

■ Negative current limit

■ Soft-start internally fixed at 2ms

■ Soft output discharge

■ Latched OVP and UVP

■ Selectable pulse skipping at light loads

■ Selectable minimum frequency (33kHz) in

pulse skip mode

■ 4mW maximum quiescent power

■ Independent power good signals

■ Output voltage ripple compensation

Applications

■ Notebook computers

■ Tablet PC or slates

■ Mobile system power supply

■ 3 and -4 Cells Li+ battery-powered devices

Description

PM6685 is a dual step-down controller specifically

designed to provide extremely high efficiency

conversion with loss-less 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. The pulse skipping technique

increases efficiency for very light loads. Moreover,

a minimum switching frequency of 33kHz is

selectable in order to avoid audio noise issues.

The PM6685 provides a selectable switching

frequency, allowing either 200kHz/300kHz,

300kHz/400kHz, or 400kHz/500kHz operation of

the 5V/3.3V switching sections.

VFQFPN-32 (5mm x 5mm)

Table 1.

Device summary

Order code

Package

Packaging

PM6685

VFQFPN-32 (5mm x 5mm)

Tube

PM6685TR

VFQFPN-32 (5mm x 5mm)

Tape and Reel

www.st.com

유사한 부품 번호 - PM6685

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	PM6685	889Kb / 16P	DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES FOR NOTEBOOK SYSTEM POWER 23-Sep-2005

More results

유사한 설명 - PM6685

제조업체	부품명	데이터시트	상세설명
Texas Instruments	TPS51020	558Kb / 27P	DUAL, VOLTAGE MODE, DDR SELECTABLE, SYNCHRONOUS, STEP-DOWN CONTROLLER FOR NOTEBOOK SYSTEM POWER
STMicroelectronics	PM6685	889Kb / 16P	DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES FOR NOTEBOOK SYSTEM POWER 23-Sep-2005
	PM6680	2Mb / 49P	No Rsense dual step-down controller with adjustable voltages for notebook system power 28-Aug-2007
	PM6680	2Mb / 49P	No Rsense dual step-down controller with adjustable voltages for notebook system power 21-Jan-2008
Richtek Technology Corp...	RT8206L	469Kb / 27P	High Efficiency, Main Power Supply Controller for Notebook Computers
Richtek Technology Corp...	RT8223A	369Kb / 26P	High Efficiency, Main Power Supply Controller for Notebook Computers April 2011
STMicroelectronics	PM6686TR	1Mb / 50P	Dual step-down controller with adjustable voltages, adjustable LDO and auxiliary charge pump controller for notebook 23-Jul-2009
	AN2829	2Mb / 32P	Dual step-down controller with auxilary voltages 25-Feb-2009
	AN2833	2Mb / 32P	Dual step-down controller with auxiliary voltages for industrial system power 24-Feb-2009
Texas Instruments	TPS51120	1Mb / 41P	TPS51120 Dual, Synchronous Step-Down Controller With 100-mA Standby Regulators for Notebook System Power

More results

PM6685 데이터시트(PDF) 1 Page - STMicroelectronics

PM6685 데이터시트(HTML) 1 Page - STMicroelectronics

유사한 부품 번호 - PM6685

유사한 설명 - PM6685

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