L9689E-TR [STMicroelectronics]

The L9689E is an airbag extension chip, family compatible with L9691 and L9690 devices.

The IC includes eight deployment drivers, supporting both squib and low-energy actuator (LEA) loads (on two channels only). Additionally, it includes a two channels interface for PSI-5 remote sensors, a seven channels hall-effect/resistive sensor interface and two general purpose low-side driver outputs.

Dual SPI interfaces separate device global functions and remote sensors; all deployment loops are armed via snooping on the remote sensor SPI interface and an internal programmable mapping.

• AEC-Q100 qualified
• Squib/LEA deployment drivers
  • 8 channel HSD/LSD for squib load
  • 2 over 8 channels supporting LEA load
  • 2 channel couples supporting common-return connection
  • 18 V deployment voltage
  • Low, high and automatic dynamic deployment current profiles
  • R measure, STB, STG and leakage diagnostics
  • High and low side driver FET tests
  • LEA presence diagnostics
• Remote sensor interface and SYNC pulse supply voltage inputs and monitorings
• Two channel PSI-5 v2.3 remote sensor interface
• Two channel general purpose low side drivers with 0-100% PWM control
• Seven channel hall-effect, resistive or switch sensor interface
• System voltage diagnostics with integrated ADCs
• Temperature sensor
• 32 bit Global SPI bus interface
• 32 bit Remote Sensor SPI bus interface, SafeSPI v1.0 compatible
• Full ISO 26262 compliant, ASIL-D systems ready
• Packaging 64 pin