L6984 datasheet(1/34 Pages) STMICROELECTRONICS

tên linh kiện	L6984

Giải thích chi tiết về linh kiện	36 V 400 mA synchronous step-down switching regulator

PDF	34 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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This is information on a product in full production.

July 2014

DocID025378 Rev 3

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L6984

36 V 400 mA synchronous step-down switching regulator

Datasheet

- production data

Features

 400 mA DC output current

 4.5 V to 36 V operating input voltage

 Synchronous rectification

 Low consumption mode or low noise mode

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

 13 µA IQ-SHTDWN

 Adjustable fSW (250 kHz - 600 kHz)

 Output voltage adjustable from 0.9 V

 No resistor divider required for 3.3 V VOUT

 VBIAS maximizes efficiency at light load

 350 mA valley current limit

 Constant on-time control scheme

 PGOOD open collector

 Thermal shutdown

Application

 Automotive systems (LCM)

 Battery powered applications (LCM)

 Car audio and low noise applications (LNM)

 Sensors (LNM)

 E- metering

Description

The L6984 is a step-down monolithic switching

regulator able to deliver up to 400 mA DC. The

output voltage adjustability ranges from 0.9 V. The

fixed 3.3 V VOUT requires no external resistor

divider. 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 almost constant over the load current

range, serving low noise application specification

like car audio/sensors. The PGOOD open

collector output can 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 low-side power element implements

an effective constant current protection.

Figure 1. Application schematic

VDFPN10 3 x 3 x 1.0 mm

VFDFPN10 4 x 4 x 1.0 mm

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Số phần tương tự - L6984

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
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	L6982NDR	2Mb / 48P	38 V, 2 A synchronous step-down converter with low quiescent current Rev 1
	L6983	4Mb / 63P	38 V, 3 A synchronous step-down converter with 17 μA quiescent current Rev 1 - October 2019

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Mô tả tương tự - L6984

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STMicroelectronics	A6984	4Mb / 47P	36 V, 400 mA automotive synchronous step-down switching regulator 02-Mar-2017
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