Four Channel Squib Driver
www.DataSheet4U.com Freescale Semiconductor
Advance Information
Document Number: MC33797 Rev 3.0, 11/2006
Four Channe...
Description
www.DataSheet4U.com Freescale Semiconductor
Advance Information
Document Number: MC33797 Rev 3.0, 11/2006
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. The device has the capability to be used in a standard four-channel squib driver IC or in a cross-coupled state with the high- and low-side squib drivers located on separate squib driver ICs. Both the high- and low-side output drivers are protected against temporary shorts to battery or ground. The current limit threshold is set by an external resistor. 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 Figure 1.
33797
SQUIB DRIVER
EK ...
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