Four Channel Squib Driver IC

The Four Channel Squib Driver IC is a complete squib diagnostic and deployment interface for use in automotive air bag modules. Extensive diagnostics and system control features are incorporated to provide fail-safe operation. The device contains a serial peripheral interface (SPI) compatible 8-bit interface to allow microprocessor control.

Features

• Four-Channel High-Side and Low-Side 2.0 A FET Switches

• Externally Adjustable FET Current Limiting

• Adjustable Current Limit Range: 0.8 A to 2.0 A

• Individual Channel Current Limit Detection with Timing Duration Measurement, Communicated via SPI

• 8-Bit SPI for Diagnostics and FET Switch Activation

• Diagnostics for High-Side Safing Sensor Status

• Resistance and Voltage Diagnostics for Squibs

• Squib Driver IC Capability to Be Used for Cross-Coupled Driver Firing Application (Allows High- and Low-Side FET Switches to Be Located on Separate Squib Driver ICs)

• Pb-Free Packaging designated by Suffix Code EK