Datasheet > L6986F

L6986F

更新时间： 2023-12-20 18:45:40

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		开关稳压器
页数	文件大小	规格书
64页	6721K
描述
38 V 1.5 A同步降压开关稳压器，30 uA静态电流

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L6986F 数据手册

L6986F

38 V, 1.5 A synchronous step-down switching regulator with 30 µA

quiescent current

Datasheet - production data

Description

The L6986F is a step-down monolithic switching

regulator able to deliver up to 1.5 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

meet 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 specification. 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 (R_TH= 40 °C/W)

Features

 1.5 A DC output current

 4 V to 38 V operating input voltage

 Low consumption mode or low noise mode

 30 µA I at light-load (LCM V

= 3.3 V)

OUT

 8 µA I

Q-SHTDWN

 Adjustable f

(250 kHz - 2 MHz)

 Output voltage adjustable from 0.85 V to V

 Embedded output voltage supervisor

 Synchronization

 Adjustable soft-start time

 Internal current limiting

 Overvoltage protection

 Output voltage sequencing

 Peak current mode architecture

 R

= 180 m, R

= 150 m

DSON LS

DSON HS

 Thermal shutdown

Applications

 Designed for 12 V and 24 V buses

 Programmable logic controllers (PLCs)

 Decentralized intelligent nodes

 Sensors and low noise applications (LNM)

February 2016

DocID027843 Rev 2

1/64

This is information on a product in full production.

www.st.com

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