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1FEATURES

2? Shoot-Through Protection

? Input Under-Voltage-Lock-Out

? 3A Peak Driving Current

? 195μA Quiescent Current

? 28V Input Voltage in Buck Configuration

? SOIC-8 and WSON Packages

APPLICATIONS

? High Current DC/DC Power Supplies

? High Input Voltage Switching Regulators

? Fast Transient Microprocessors

? Notebook Computers

DESCRIPTION

The LM2724A is a dual N-channel MOSFET driver

which can drive both the top and bottom MOSFETs in

a push-pull structure simultaneously. The LM2724A

takes a logic input and splits it into two complimentary

signals with a typical 20ns dead time in between. The

built-in cross-conduction protection circuitry prevents the top and bottom MOSFETs from turning on

simultaneously. With a bias voltage of 5V, the peak

sourcing and sinking current for each driver of the

LM2724A is about 3A. Input UVLO (Under-Voltage-

Lock-Out) ensures that all the driver outputs stay low

until the supply rail exceeds the power-on threshold

during system power on, or after the supply rail drops

below power-on threshold by a specified hysteresis

during system power down. The cross-conduction

protection circuitry detects both driver outputs and will

not turn on a driver until the other driver output is low.

The top gate voltage needed by the top MOSFET is

obtained through an external boot-strap structure.

When not switching, the LM2724A only draws up to

195μA from the 5V rail. The synchronization

operation of the bottom MOSFET can be disabled by

pulling the SYNC pin to ground.