The A4919 has an integrated low dropout regulator supplying 5.0 or 3.3V.  It can be controlled with block (trapezoidal), sinusoidal, or vector commutation when interfaced with a microprocessor. It is designed to be a simple direct control gate driver for use in commercial and industrial markets providing LDO for peripherals or a microprocessor.

A unique charge pump regulator provides a minimum 10V gate drive at power supply voltages down to 7.0V and allows the IC to operate with reduced gate drive at power supply voltages down to 5.5V. A bootstrap capacitor provides the power supply voltage required for the high side n-channel MOSFETs. One logic-level input is provided for each of the six power MOSFETs in the three-phase bridge, allowing motors to be driven with any commutation scheme defined by an external controller. The power MOSFETs are protected from cross-conduction by integrated crossover control.

Motor phase short-to-supply and short-to-ground detection is provided by independent drain-source voltage monitors on each MOSFET. Short faults, supply under voltage, and chip over-temperature conditions are indicated by a single open-drain fault output. Variants include either 5.0 or 3.3V LDO. An option without LDO provides a voltage input which can be used to monitor an external voltage source.

The IC is supplied in a 28-pin TSSOP power package (package type LP) and a 28-terminal 5.0 x 5.0 x 0.9mm (QFN package) both with an exposed pad for enhanced thermal performance. Both packages are lead-free, with 100% matt-tin leadframe plating.