L9662 datasheet(1/80 Pages) STMICROELECTRONICS

Numer części	L9662

Szczegółowy opis	Octal squib driver and quad Manchester/PSI5 encoded sensor

PDF	80 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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1 / 80 page

This is information on a product in full production.

September 2015

DocID028325 Rev 1

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L9662

Octal squib driver and quad Manchester/PSI5 encoded sensor

interface ASIC for safety application

Datasheet

- production data

Features

 8 deployment drivers with SPI selectable firing

current and times

 Capability to deploy the squib with 1.2 A

(min)/2 ms, 1.75 A (min)/1.0 ms and 1.75 A

(min)/0.65 ms between VRES of 7 V to 37 V

 Capability to deploy the squib with 1.5 A

(min)/2 ms between VRES of 7 V to 25 V

 Firing capability to deploy all channels

simultaneously

 Independently controlled high-side and low-

side MOS for diagnosis

 Analog output available for resistance

measurement

 Squib short to ground, short to battery and

MOS diagnostic available on SPI register

 Capability to deploy the squib the low side

MOS is shorted to ground

 4 Fire enable inputs

 Interface with 4 satellite sensors

 Programmable independent current trip points

for each satellite channel

 Support Manchester 1 or 2 protocol for satellite

sensors

 Support PSI5 (Parity) protocol for satellite

sensors (reference PSI5 technical specification

V 1.2 /14.06.07)

 Support for Sync pulse and minibus for satellites

 Supports for variable bit rate detection

 Independent current limit and fault timer

shutdown protection for each satellite output

 Short to ground and short to battery detection

and reporting for each satellite channel

 2 independent SPI interfaces

 5.5 MHz SPI interface

 Satellite message error detection

 Hall effect sensor support on satellite channels

3 and 4.

 Low voltage internal reset

 2 kV ESD capability on all pins

 Package: LQFP64

 Technology: ST Proprietary BCD5

Description

The device is intended to deploy up to 8 squibs

and to interface up to 4 satellites. 2 satellite

interfaces can be used to interface Hall sensors.

Squib drivers are sized to deploy 1.2 A minimum

for 2 ms, 1.75 A minimum for 1 ms and 1.75 A

minimum for 0.65 ms during load dump along with

1.5 A minimum for 2 ms for VRES voltages less

than 25 V.

Full diagnostic capabilities of the squib interface

are provided. Satellite interfaces support

Manchester 1, 2 and PSI5 decoding with variable

bit rate.

LQFP64 (10x10x1.4mm)

Table 1. Device summary

Order code

Amb. temp range,

C

Package

Packing

L9662

-40 to +85

LQFP64

Tray

L9662TR

Tape & Reel

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