A3940KLP

The A3940KLP and A3940KLW are designed specifically for automotive applications that require high-power motors.  Each provides four high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration.

Bootstrap capacitors are utilized to provide the above-battery supply voltage required for n-channel FETs.  An internal charge pump for the high side allows for dc (100% duty cycle) operation of the bridge.

Protection features include supply under/overvoltage, thermal shutdown, and motor lead short-to-battery and short-to-ground fault notification, and a programmable dead-time adjustment for cross- conduction prevention.  The overvoltage trip point is user adjustable.

The A3940 is supplied in a choice of two power packages, a 28- lead TSSOP with an exposed thermal pad (suffix LP), and a 28-lead wide-body SOIC (suffix LW).