Datasheet > L6986H3V3

L6986H3V3

更新时间： 2022-05-14 22:21:08

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
68页	18008K
描述
38 V, 2 A synchronous step-down switching regulator with 30 Î¼A quiescent current

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L6986H3V3 数据手册

L6986H

Datasheet

38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current

Features

•

2 A DC output current

4 V to 38 V operating input voltage

Low consumption mode or low noise mode

30 µA I_Qat light-load (LCM V_OUT= 3.3 V)

8 µA I_Q-SHTDWN

Adjustable f_SW(250 kHz - 2 MHz)

Fixed output voltage (3.3 V and 5 V) or adjustable from 0.85 V to V_IN

Embedded output voltage supervisor

Synchronization

Adjustable soft-start time

Internal current limiting

Overvoltage protection

Output voltage sequencing

Peak current mode architecture

R_{DS(on) HS}= 180 mΩ, R_{DS(on) LS}= 150 mΩ

Thermal shutdown

Applications

Product status link

•

Designed for 12 V and 24 V buses

L6986H

Programmable logic controllers (PLCs)

Decentralized intelligent nodes

Sensors and low noise applications (LNM)

Description

The L6986H is a step-down monolithic switching regulator able to deliver up to 2 A

DC. The output voltage adjustability ranges from 0.85 V to VIN. Thanks to the P-

channel MOSFET high-side power element, the device features 100% duty cycle

operation. The wide input voltage range meets the specification for the 5 V, 12 V and

24 V power supplies.

The “low consumption mode” (LCM) is designed for applications active during idle

mode, 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

specifications. 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.

DS12905 - Rev 2 - February 2020

www.st.com

For further information contact your local STMicroelectronics sales office.

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