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LM5109SDX Datasheet

  • LM5109SDX

  • 100V / 1A Peak Half Bridge Gate Driver

  • 9頁

  • NSC

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LM5109 100V / 1A Peak Half Bridge Gate Driver
April 2005
LM5109
100V / 1A Peak Half Bridge Gate Driver
General Description
The LM5109 is a low cost high voltage gate driver, designed
to drive both the high side and the low side N-Channel
MOSFETs in a synchronous buck or a half bridge configura-
tion. The floating high-side driver is capable of working with
rail voltages up to 100V. The outputs are independently
controlled with TTL compatible input thresholds. A robust
level shifter technology operates at high speed while con-
suming low power and providing clean level transitions from
the control input logic to the high side gate driver. Under-
voltage lockout is provided on both the low side and the high
side power rails. The device is available in the SOIC-8 and
the thermally enhanced LLP-8 packages.
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Bootstrap supply voltage to 118V DC
Fast propagation times (27 ns typical)
Drives 1000 pF load with 15ns rise and fall times
Excellent propagation delay matching (2 ns typical)
Supply rail under-voltage lockout
Low power consumption
Pin compatible with ISL6700
Typical Applications
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Current Fed push-pull converters
Half and Full Bridge power converters
Solid state motor drives
Two switch forward power converters
Features
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Drives both a high side and low side N-Channel
MOSFET
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1A peak output current (1.0A sink / 1.0A source)
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Independent TTL compatible inputs
Package
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SOIC-8
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LLP-8 (4 mm x 4 mm)
Simplified Block Diagram
20150501
FIGURE 1.
漏 2005 National Semiconductor Corporation
DS201505
www.national.com

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