PM6680 datasheet(1/49 Pages) STMICROELECTRONICS

부품명	PM6680

상세설명	No Rsense dual step-down controller with adjustable voltages for notebook system power

PDF	49 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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1 / 49 page

August 2007

Rev 6

1/49

49

PM6680

No Rsense dual step-down controller with adjustable voltages

for notebook system power

Features

■ 6 V to 28 V input voltage range

■ Adjustable output voltages

■ 5V always voltage available deliver 100 mA

peak current

■ 1.237 V ± 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 (33 kHz) 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

■ 3-4 cells Li+ battery powered devices

Description

PM6680 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 PM6680 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 0.9 V to 5.5 V

and from 0.9 V to 3.3 V respectively.

VFQFPN-32 5X5

www.st.com

Table 1.

Device summary

Order codes

Package

Packaging

PM6680

VFQFPN-32 5mm x 5mm (Exposed pad)

Tube

PM6680TR

VFQFPN-32 5mm x 5mm (Exposed pad)

Tape and reel

유사한 부품 번호 - PM6680

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	PM6680	2Mb / 49P	No Rsense dual step-down controller with adjustable voltages for notebook system power 21-Jan-2008
	PM6680A	1Mb / 48P	Dual synchronous step-down controller with adjustable output voltages plus LDO 17-Dec-2007
	PM6680ATR	1Mb / 48P	Dual synchronous step-down controller with adjustable output voltages plus LDO 17-Dec-2007
	PM6680TR	2Mb / 49P	No Rsense dual step-down controller with adjustable voltages for notebook system power 21-Jan-2008
	PM6680	2Mb / 49P	No Rsense dual step-down controller with adjustable voltages for notebook system power 21-Jan-2008

More results

유사한 설명 - PM6680

제조업체	부품명	데이터시트	상세설명
Maxim Integrated Produc...	MAX1717	501Kb / 32P	Dynamically Adjustable, Synchronous Step-Down Controller for Notebook CPUs 19-1636; Rev 0; 1/00
STMicroelectronics	PM6685	889Kb / 16P	DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES FOR NOTEBOOK SYSTEM POWER 23-Sep-2005
	PM6680A	1Mb / 48P	Dual synchronous step-down controller with adjustable output voltages plus LDO 17-Dec-2007
	PM6680	2Mb / 49P	No Rsense dual step-down controller with adjustable voltages for notebook system power 21-Jan-2008
	PM6685	2Mb / 52P	Dual step-down main supply controller with auxilary voltages for notebook system power 18-Oct-2007
	STEVAL-ISA053V1	189Kb / 4P	Demonstration board for the PM6680 dual step-down controller with adjustable output voltage for notebook power system 29-Sep-2008
	PM6686TR	1Mb / 50P	Dual step-down controller with adjustable voltages, adjustable LDO and auxiliary charge pump controller for notebook 23-Jul-2009
Linear Technology	LTC1778EGN	254Kb / 24P	Wide Operating Range, No RSENSE Step-Down Controller
STMicroelectronics	AN2829	2Mb / 32P	Dual step-down controller with auxilary voltages 25-Feb-2009
STMicroelectronics	AN2833	2Mb / 32P	Dual step-down controller with auxiliary voltages for industrial system power 24-Feb-2009

More results

PM6680 데이터시트(PDF) 1 Page - STMicroelectronics

PM6680 데이터시트(HTML) 1 Page - STMicroelectronics

유사한 부품 번호 - PM6680

유사한 설명 - PM6680

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