PTS SMARTPOWER

The 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.

• 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
• 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)