L9659 is an Octal squib driver ASIC for safety application launched by STMicroelectronics. It has 8 deployment drivers with SPI selectable firing current and times, the 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, and the capability to deploy the squib with 1.5 A (min)/2 ms between VRES of 7 V to 25 V.
The L9659 is an octal squib driver ASIC intended for safety applications, capable of deploying up to 8 squibs. It features independently controlled high-side and low-side MOS for diagnosis and supports various firing currents and times selectable via an SPI interface. The device operates with reserve voltages between 7 V and 37 V and includes full diagnostic capabilities for squib interface faults such as shorts to ground or battery.
| Number of deployment drivers | 8 |
|---|---|
| Package type | LQFP64 |
| SPI interface frequency | 5.5 MHz |
| Firing current capability (VRES 7V to 37V) | 1.2 A (min)/2 ms, 1.75 A (min)/1.0 ms, 1.75 A (min)/0.65 ms |
| Firing current capability (VRES 7V to 25V) | 1.5 A (min)/2 ms |
The L9659 is intended to deploy up to 8 squibs.
Yes, the device has the capability to deploy all channels simultaneously.
The device provides diagnostics for squib short to ground, short to battery, and MOS status.