L9678P datasheet(19/215 Pages) STMICROELECTRONICS

номер детали	L9678P

подробное описание детали	Automotive user configurable airbag and battery cut-off IC

PDF	215 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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19 / 215 page

DS11626 Rev 9

19/216

L9678P, L9678P-S

Overview and block diagram

214

Overview and block diagram

The L9678P is a unique solution specifically targeted for entry level airbag or cut-off battery

systems while permitting the system designer significant flexibility in configuring the system

power and management block. The configurable methodology allows cost versus

performance trade-off without changing devices or circuit board designs. The L9678P

contains the base functionality required for entry level systems and can complete a system

design with a microcontroller and acceleration sensor. The high level block diagram is

shown below in Figure 2.

Basic features include a configurable power supply & management block, 4 channel

squib/pyroswitch drivers, 2 channel HS/LS GPO drivers, 4 channel sensor interface, safing

logic, watchdog timer, ISO9141 communications and temperature sensor. The L9678P-S

device is pin compatible to the L9678P and includes two PSI-5 remote sensor interface

channels and a dedicated regulator for remote sensor.

L9678P датащи(PDF) 19 Page - STMicroelectronics