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L9662

STMicroelectronics
Part Number L9662
Manufacturer STMicroelectronics
Description Octal squib driver and quad Manchester/PSI5 encoded sensor interface ASIC
Published Mar 28, 2016
Detailed Description L9662 Octal squib driver and quad Manchester/PSI5 encoded sensor interface ASIC for safety application Datasheet - prod...
Datasheet PDF File L9662 PDF File

L9662
L9662

Overview
L9662 Octal squib driver and quad Manchester/PSI5 encoded sensor interface ASIC for safety application Datasheet - production data '!0'03 LQFP64 (10x10x1.
4mm) 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 lowside 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.
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