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L9658

STMicroelectronics
Part Number L9658
Manufacturer STMicroelectronics
Description Octal squib driver and quad sensor interface ASIC
Published Feb 18, 2023
Detailed Description L9658 Octal squib driver and quad sensor interface ASIC for safety application Features ■ 8 deployment drivers sized t...
Datasheet PDF File L9658 PDF File

L9658
L9658

Overview
L9658 Octal squib driver and quad sensor interface ASIC for safety application Features ■ 8 deployment drivers sized to deliver 1.
2 A (min) for 2 ms (min) and 1.
75 A (min) for 1 ms (min) ■ Independently controlled high-side and lowside MOS for diagnosis ■ Analog output available for resistance ■ Squib short to ground, short to battery and MOS diagnostic available on SPI register ■ 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 4 satellite sensors ■ Programmable independent current trip points for each satellite channel ■ 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 ■ 5.
5 MHz SPI interface ■ Satellite message error detection LQFP64 ■ Hall effect sensor support on satellite channels 3 and 4.
■ Low voltage internal reset ■ 2 kV ESD capability on all pins ■ Package: 64 leads LQFP ■ Technology: ST proprietary BCD5s (0.
57 µm) Description L9658 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 minimum during load dump and 1.
75 A minimum for 1ms minimum during load dump.
Diagnostic of squib driver and squib resistance measurement is controlled by micro controller.
Satellite interfaces support Manchester decoder with variable bit rate.
Table 1.
Device summary Order code L9658 L9658TR Package LQFP64 LQFP64 Packing Tray Tape and reel September 2013 Doc ID 14219 Rev 3 1/64 www.
st.
com 1 Contents Contents L9658 1 Block diagram and application schematic .
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7 1.
1 Block diag...


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