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LM5112-SDX Datasheet

  • LM5112-SDX

  • Tiny 7A MOSFET Gate Driver

  • 235.81KB

  • 10頁

  • NSC

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LM5112 Tiny 7A MOSFET Gate Driver
October 2004
LM5112
Tiny 7A MOSFET Gate Driver
General Description
The LM5112 MOSFET gate driver provides high peak gate
drive current in the tiny LLP-6 package (SOT23 equivalent
footprint) with improved package power dissipation required
for high frequency operation. The compound output driver
stage includes MOS and bipolar transistors operating in
parallel that together sink more than 7A peak from capacitive
loads. Combining the unique characteristics of MOS and
bipolar devices reduces drive current variation with voltage
and temperature. Under-voltage lockout protection is pro-
vided to prevent damage to the MOSFET due to insufficient
gate turn-on voltage. The LM5112 provides both inverting
and non-inverting inputs to satisfy requirements for inverting
and non-inverting gate drive with a single device type.
Features
n
Compound CMOS and bipolar outputs reduce output
current variation
n
7A sink/3A source current
n
Fast propagation times (25 ns typical)
n
Fast rise and fall times (14 ns/12 ns rise/fall with 2 nF
load)
n
Inverting and non-inverting inputs provide either
configuration with a single device
n
Supply rail under-voltage lockout protection
n
Dedicated input ground (IN_REF) for split supply or
single supply operation
n
Power Enhanced 6-pin LLP package (3.0mm x 3.0mm)
n
Output swings from V
CC
to V
EE
which can be negative
relative to input ground
Block Diagram
20066801
Block Diagram of LM5112
漏 2004 National Semiconductor Corporation
DS200668
www.national.com

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