Overview
The L9660TR, produced by STMicroelectronics, is a quad squib driver ASIC designed specifically for safety applications. This component is intended to deploy up to 4 squibs and is equipped with advanced features to ensure reliable and controlled deployment. The L9660TR is part of the STMicroelectronics family of automotive-grade components, known for their robustness and compliance with stringent automotive standards.
Key Specifications
| Parameter | Description |
|---|---|
| Package | LQFP64 (10x10x1.4 mm) |
| Technology | ST proprietary BCD5 (0.65μm) |
| Operating Temperature Range | -40°C to +95°C |
| Supply Voltage Range (VRES) | 7 V to 37 V |
| Firing Currents | 1.2 A (min)/2 ms, 1.75 A (min)/1 ms, 1.75 A (min)/0.65 ms |
| Firing Current for VRES < 25 V | 1.5 A (min)/2 ms |
| SPI Interface | 5.5 MHz |
| ESD Capability | 2 kV on all pins |
| RoHS Compliance | Ecopack2 |
Key Features
- 4 deployment drivers with SPI selectable firing current and times
- 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 when the low side MOS is shorted to ground
- 2 fire enable inputs
- Low voltage internal reset
Applications
The L9660TR is primarily used in automotive safety applications, particularly in airbag systems and other safety-critical deployments. Its robust design and comprehensive diagnostic capabilities make it an ideal choice for ensuring the reliability and safety of such systems.
Q & A
- What is the primary function of the L9660TR?
The primary function of the L9660TR is to deploy up to 4 squibs in safety-critical applications, such as airbag systems.
- What are the firing current capabilities of the L9660TR?
The L9660TR can deploy squibs with firing currents of 1.2 A (min)/2 ms, 1.75 A (min)/1 ms, and 1.75 A (min)/0.65 ms.
- What is the operating temperature range of the L9660TR?
The operating temperature range is -40°C to +95°C.
- What type of package does the L9660TR come in?
The L9660TR comes in an LQFP64 package (10x10x1.4 mm).
- Is the L9660TR RoHS compliant?
- What is the SPI interface frequency of the L9660TR?
The SPI interface frequency is 5.5 MHz.
- Does the L9660TR have ESD protection?
- Can the L9660TR deploy all channels simultaneously?
- What diagnostic capabilities does the L9660TR offer?
The L9660TR offers comprehensive diagnostic capabilities including squib short to ground, short to battery, and MOS diagnostics available on the SPI register.
- Can the L9660TR deploy a squib when the low side MOS is shorted to ground?
