L9659:Octal squib driver ASIC for safety application

The L9659 is intended to deploy up to 8 squibs. 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.

Full diagnostic capabilities of the squib interface are provided.

Key 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 low-side 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
  • 5.5 MHz SPI interface
  • Low voltage internal reset
  • 2 kV ESD capability on all pins
  • Package: LQFP64
  • Technology: ST proprietary BCD5 (0.65 μm)
  • RoHS compliant
Product Specifications
DescriptionVersionSize
DS8586: Octal squib driver ASIC for safety application2.0571 KB
Application Notes
DescriptionVersionSize
AN4437: L9678 user configurable airbag3.04 MB
Sample & Buy
Part NumberQuantityUnit Price (US$) *PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
L9659--LQFP 64 10x10x1.4Tray-4095NECEAR99MALAYSIA
L9659TR--LQFP 64 10x10x1.4Tape And Reel-4095NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
L9659LQFP 64 10x10x1.4AutomotiveEcopack2
L9659TRLQFP 64 10x10x1.4AutomotiveEcopack2
Octal squib driver ASIC for safety application L9659
L9678 user configurable airbag L9680