L9915集成电路（IC）的电源管理-专用规格书PDF中文资料

L9915属于集成电路（IC）的电源管理-专用。由意法半导体集团制造生产的L9915电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。

特性 Features

 Fully monolithic design

 High side field driver

 Field short circuit protection

 Regulated voltage driven by ECU (protocol

driven)

 Regulated voltage thermally compensated

(without protocol)

 Lamp driver (wake up and warning detection)

 Self start function

 Load response control (LRC)

 Field monitor (FM) output

 Thermal shutdown

描述 Description

The device is a monolithic alternator voltage

regulator intended for use in automotive

application.

It includes the control section, the field power

stage, fault diagnostic circuit which drives a

warning lamp, and the protection against short

circuits.

This device regulates in close loop the output of

an automotive generator by controlling the field

winding current by means of a pulse-width

modulation (PWM) high side driver at fixed

frequency.

The set-point voltage reference selected by the

Engine Control Unit via C-terminal protocol is

temperature flat. An internal voltage reference

thermally compensated is present in the device

and used when the protocol coming from ECU is

absent or the wire is broken.

A self-bias circuitry is present on L pin in order to

turn-on the warning lamp also when the device is

not supplied (battery connection broken).