The FAN3268 dual 2A gate driver is optimized to drive a high-side P-channel MOSFET and a low-side N-channel MOSFET in motor control applications operating from a voltage rail up to 18V. The driver has TTL input thresholds and provides buffer and level translation functions from logic inputs. Internal circuitry provides an under-voltage lockout function that prevents the output switching devices from operating if the VDD supply voltage is below the operating level. Internal 100kΩ resistors bias the non-inverting output low and the inverting output to V to keep the external MOSFETs off during startup intervals when logic control signals may not be present. The FAN3268 driver incorporates MillerDrive™ architecture for the final output stage. This bipolar-MOSFET combination provides high current during the Miller plateau stage of the MOSFET turn-on / turn-off process to minimize switching loss, while providing rail-to-rail voltage swing and reverse current capability. The FAN3268 has two independent enable pins that default to on if not connected. If the enable pin for non-inverting channel A is pulled low, OUTA is forced low; if the enable pin for inverting channel B is pulled low, OUTB is forced high. If an input is left unconnected, internal resistors bias the inputs such that the external MOSFETs are off.
●Features
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● 4.5V to 18V Operating Range
● Drives High-Side PMOS and Low-Side NMOS in Motor Control or Buck Step-down Applications
● Inverting Channel B Biases High-Side PMOS Device Off (with internal 100kΩ Resistor) when VDD is below UVLO Threshold
● TTL Input Thresholds
● 2.4A Sink / 1.6A Source at VOUT=6V
● Internal Resistors Turn Driver Off If No Inputs
● MillerDrive™ Technology
● 8-Lead SOIC Package
● Rated from -40°C to +125°C Ambient