FAN3268

FAN3268 —2A Low-Voltage PMOS-NMOS Bridge Driver February 2009 FAN3268 2A Low-Voltage PMOS-NMOS Bridge Driver Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ 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 Description 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 VDD 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 bipolarMOSFET combination provides high current during the Miller plateau stage of the MOSFET turn-on / turn-off process to minimize switching loss, while providing railto-rail ...