Datasheet Texas Instruments LM2724A — 数据表

NRND LM2724A
www.ti.com SNVS242C – JUNE 2003 – REVISED MARCH 2013 LM2724A High Speed 3A Synchronous MOSFET Driver
Check for Samples: LM2724A FEATURES 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-VoltageLock-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
195ВµA from the 5V rail. The synchronization
operation of the bottom MOSFET can be disabled by …