A6985F datasheet(1/77 Pages) STMICROELECTRONICS

부품명	A6985F

상세설명	38 V 500 mA synchronous step-down switching regulator

PDF	77 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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1 / 77 page

This is information on a product in full production.

April 2015

DocID027738 Rev 2

1/77

A6985F

38 V 500 mA synchronous step-down switching regulator

with 30 µA quiescent current

Datasheet

- production data

Features

 AECQ100 qualification

 0.5 A DC output current

 4 V to 38 V operating input voltage

 Low consumption mode or low noise mode

 30 µA IQ at light-load (LCM VOUT = 3.3 V)

 8 µA IQ-SHTDWN

 Fixed output voltage (3.3 V and 5 V) or

adjustable from 0.85 V to VIN

 Adjustable fSW (250 kHz - 2 MHz)

 Embedded output voltage supervisor

 Synchronization

 Adjustable soft-start time

 Internal current limiting

 Overvoltage protection

 Output voltage sequencing

 Peak current mode architecture

 RDSON HS = 360 m, RDSON LS = 150 m

 Thermal shutdown

Applications

 Designed for automotive systems

 Battery powered applications

 Car body applications (LCM)

 Car audio and low noise applications (LNM)

Description

The A6985F automotive grade device is a step-

down monolithic switching regulator able to

deliver up to 0.5 A DC. The output voltage

adjustability ranges from 0.85V to VIN. The 100%

duty cycle capability and the wide input voltage

range meet the cold crank and load dump

specifications for automotive systems. The “Low

Consumption Mode” (LCM) is designed for

applications active during car parking, so it

maximizes the efficiency at light-load with

controlled output voltage ripple. The “Low Noise

Mode” (LNM) makes the switching frequency

constant and minimizes the output voltage ripple

overload current range, meeting the low noise

application specification like car audio. The output

voltage supervisor manages the reset phase for

any digital load (µC, FPGA). The RST open

collector output can also implement output

voltage sequencing during the power-up phase.

The synchronous rectification, designed for high

efficiency at medium - heavy load, and the high

switching frequency capability make the size of

the application compact. Pulse by pulse current

sensing on both power elements implements an

effective constant current protection.

HTSSOP16 (RTH = 40 °C/W)

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유사한 부품 번호 - A6985F

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STMicroelectronics	A6984	4Mb / 47P	36 V, 400 mA automotive synchronous step-down switching regulator 02-Mar-2017
	A6984TR	4Mb / 47P	36 V, 400 mA automotive synchronous step-down switching regulator 02-Mar-2017
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STMicroelectronics	A6986F	6Mb / 72P	38 V 1.5 A synchronous step-down switching regulator 15-Apr-2015
	R6986	2Mb / 62P	38 V, 2 A synchronous step-down switching regulator 13-May-2015
	L6984	4Mb / 34P	36 V 400 mA synchronous step-down switching regulator 04-Jul-2014
	A6984	4Mb / 47P	36 V, 400 mA automotive synchronous step-down switching regulator 02-Mar-2017
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