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L9654

STMicroelectronics
Part Number L9654
Manufacturer STMicroelectronics
Description Quad squib driver and dual sensor interface ASIC
Published Feb 18, 2023
Detailed Description L9654 Quad squib driver and dual sensor interface ASIC for safety application Datasheet - production data  Support Ma...
Datasheet PDF File L9654 PDF File

L9654
L9654

Overview
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 *$3*36 LQFP48  Short to ground and short to battery detection and reporting for each satellite channel  5.
5 MHz SPI interface Features  4 deployment drivers sized to deliver 1.
2 A (min) for 2 ms (min) and 1.
75 A (min) for 1ms (min).
 Independently controlled high-side and lowside MOS for diagnosis  Analog output available for resistance  Satellite message error detection  Low voltage internal reset  2 kV ESD capability on all pins  Package: 48 lead LQFP  Technology: ST Proprietary BCD5s (0.
57 μm) Description  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  Capability to deploy the squib with 1.
2 A (min.
) at 6.
9 V VRES and 1.
75 A at 12 V VRES.
 Interface with 2 satellite sensors  Programmable independent current trip points for each satellite channel Squib drivers are sized to deploy 1.
2 A (min.
) for 2 ms (min.
) during load dump and 1.
75 A (min.
) for 1 ms (min.
) during load dump.
Diagnostic of squib driver and squib resistance measurement is controlled by micro controllers.
Satellite interfaces support Manchester decoder with variable bit rates.
Table 1.
Device summary Order code Package Packing L9654 L9654TR LQFP48 LQFP48 Tray Tape and reel November 2013 This is information on a product in full production.
DocID14218 Rev 3 1/59 www.
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com Contents Contents L9654 1 Block diagram and application schematic .
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