L9662：Octal squib driver and quad Manchester/PSI5 encoded sensor interface ASIC for safety application
The device 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, 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. Satellite interfaces support Manchester 1, 2 and PSI5 decoding with variable bit rate.
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
- Interface with 4 satellite sensors
- Programmable independent current trip points for each satellite channel
- Support Manchester 1 or 2 protocol for satellite sensors
- Support PSI5 (Parity) protocol for satellite sensors (reference PSI5 technical specification V 1.2 /14.06.07)
- Support for Sync pulse and minibus for satellites
- 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
- 2 independent SPI interfaces
- 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: LQFP64
- Technology: ST Proprietary BCD5
Product Specifications
Application Notes
Sample & Buy
| Part Number | Quantity | Unit Price (US$)
* | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| L9662TR | - | - | LQFP 64 10x10x1.4 | Tape And Reel | -40 | 95 | NEC | EAR99 | TAIWAN |
| L9662 | - | - | LQFP 64 10x10x1.4 | Tray | -40 | 95 | NEC | EAR99 | TAIWAN |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|
| L9662TR | LQFP 64 10x10x1.4 | Automotive | Ecopack2 | |
| L9662 | LQFP 64 10x10x1.4 | Automotive | Ecopack2 | |
