A4919 Overview
The A4919 is a three-phase controller for use with N-channel external power MOSFETs. A unique charge pump regulator provides full (>10 V) gate drive at power supply voltages down to 7 V and allows the A4919 to operate with reduced gate drive at power supply voltages down to 5.5 V. A bootstrap capacitor is used to provide the above power supply voltage required for N-channel MOSFETs.
A4919 Key Features
- High-current 3-phase gate drive for N-channel MOSFETs
- 5.5 to 50 V supply voltage range
- Regulated logic supply voltage output option
- Low-current Sleep mode option
- Motor phase short-to-supply and short-to-ground detection
- Cross-conduction protection
- Undervoltage, overtemperature monitors