L9654

L9654

Quad squib driver and dual sensor interface

ASIC for safety application

Datasheet - production data

 Support Manchester protocol for satellite sensors

 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

*$3*36

LQFP48

 5.5 MHz SPI interface

 Satellite message error detection

Features

 Low voltage internal reset

 4 deployment drivers sized to deliver 1.2 A (min) for 2 ms (min) and 1.75 A (min) for 1ms (min).

 2 kV ESD capability on all pins

 Package: 48 lead LQFP

 Technology: ST Proprietary BCD5s (0.57 μm)

 Independently controlled high-side and low- side MOS for diagnosis

Description

 Analog output available for resistance

 Squib short to ground, short to battery and MOS diagnostic available on SPI register

L9654 is intended to deploy up to 4 squibs and to interface up to 2 satellites.

 Capability to deploy the squib with 1.2 A (min.) or 1.75 A under 35 V load-dump condition and the low-side MOS is shorted to ground