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3940

Allegro Micro Systems
Part Number 3940
Manufacturer Allegro Micro Systems
Description Full-Bridge Power MOSFET Controller
Published May 1, 2007
Detailed Description 3940 3940 ADVANCED DATASHEET – 4/9/03 (Subject to change without notice.) H-BRIDGE POWER MOSFET CONTROLLER The A3940 wa...
Datasheet PDF File 3940 PDF File

3940
3940

Overview
3940 3940 ADVANCED DATASHEET – 4/9/03 (Subject to change without notice.
) H-BRIDGE POWER MOSFET CONTROLLER The A3940 was designed specifically for driving high power DC motors in automotive applications.
The A3940 provides four high current gate drive outputs capable of driving a wide range of power N-channel MOSFETs.
Bootstrap capacitors are utilized to provide the above battery supply voltage required for N-channel FETs.
An internal charge pump for the highside will allow for DC (100% duty cycle) operation of the bridge.
PHASE and ENABLE input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM control signals.
Protection features include supply under-voltage and over-voltage, programmable deadtime adjustment for cross-conduction protection, thermal shutdown, and motor lead short-to-supply and short-to-ground protection.
The A3940 is available in 28L low profile (1mm) e-TSSOP packaging (LP) which has an exposed pad solderab...


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