FAN3278 is a 30V PMOS-NMOS bridge driver, suitable for motor control or buck step-down applications. It has an optimum operating range of 8V to 27V and drives high-side PMOS and low-side NMOS. The output drive voltage magnitude is limited to <13V and biases each load device off with a 100kΩ resistor when VDD is below the operating level. It has low-voltage TTL input thresholds and internal resistors that hold the driver off when no inputs are present. It is suitable for motor control, buck converters, and logic-controlled load circuits.
The FAN3278 is a dual 1.5A gate driver designed to drive high-side P-channel MOSFETs and low-side N-channel MOSFETs in motor control or buck step-down applications. It operates from an optimum voltage range of 8V to 27V, with internal circuitry limiting the output drive voltage magnitude to less than 13V for Vpp up to 30V.
The device features TTL input thresholds and includes internal resistors that bias each load device OFF when the supply voltage is below the operating level or if inputs are unconnected. It incorporates MOSFET devices in the final output stage to provide high current during turn-on and turn-off transitions, minimizing switching loss.
| Optimum Operating Range | 8V to 27V |
|---|---|
| Output Drive-Voltage Magnitude Limit | < 13V for Vpp up to 30V |
| Peak Gate Drives Sink Current | +1.5A |
| Peak Gate Drives Source Current | -1.0A |
| Operating Ambient Temperature Range | -40°C to +125°C |
| Package Type | 8-Lead SOIC Package |
The optimum operating range is 8V to 27V.
Yes, but its gate drive current is reduced when driven from less than 8V.
Internal resistors bias the inputs such that the external MOSFETs remain OFF.