A3942: Quad High-Side Gate Driver for Automotive Applications

The A3942 is a highly-integrated gate driver IC that can drive up to four N-Channel MOSFETs in a high-side configuration. The device is designed to withstand the harsh environmental conditions and high reliability standards of automotive applications.

Serial Peripheral Interface (SPI) compatibility makes the device easily integrated into existing applications. The MOSFETs in such applications are typically used to drive gasoline or diesel engine management actuators, transmission actuators, body control actuators and other general-purpose automotive or industrial loads. In particular, the A3942 is suited for driving glow plugs, valves, solenoids, and other inductive loads in engine management and transmission systems.

DATASHEETS

A3942 Datasheet

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Drives four N-channel high-side MOSFETS
Charge pump for 100% duty cycle operation
Serial and discrete inputs
SPI port for control and fault diagnostics
4.5 to 60 V input voltage range
Sleep function for minimum power drain
Thin profile 38-lead TSSOP with internally fused leads for enhanced thermal dissipation
Lead (Pb) free
Device protection features:

Short-to-ground detection (latched)
Short-to-battery protection (latched)
Open load detection (latched)
VDD undervoltage lockout
VCP undervoltage lockout
Thermal monitor

The device is available in a 38-lead thin (1.20 mm maximum overall height) TSSOP package with six pins that are fused internally to provide enhanced thermal dissipation (package LG). It is lead (Pb) free with 100% matte tin leadframe plating.

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Part Number Specifications and Availability
Part Number	Package Type	Temperature	RoHS Compliant	Part Composition / RoHS Data	Comments	Samples	Check Distributor Stock
A3942KLGTR-T	38-lead TSSOP	-40 ° C to 125 ° C	Yes	View Data		Contact your local sales rep	Check Distributor Stock

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.

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A3942: Quad High-Side Gate Driver for Automotive Applications

Part Number Specifications and Availability

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.