NRND

LM5100, LM5101

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SNVS267C – MAY 2004 – REVISED MARCH 2005

LM5100 /LM5101 High Voltage High Side and Low Side Gate Driver

Check for Samples: LM5100, LM5101

1

FEATURES

PACKAGE

2

•

Drives Both a High Side and Low Side N-

•

SOIC-8

Channel MOSFET

•

WSON-10 (4 mm x 4 mm)

•

Independent High and Low Driver Logic Inputs

(TTL for LM5101 or CMOS for LM5100)

DESCRIPTION

The LM5100/LM5101 High Voltage Gate Drivers are

•

Bootstrap Supply Voltage Range up to 118V

designed to drive both the high side and the low side

DC

N-Channel MOSFETs in a synchronous buck or a

•

Fast Propagation Times (25 ns Typical)

half bridge configuration. The floating high-side driver

•

Drives 1000 pF Load with 15 ns Rise and Fall

is capable of operating with supply voltages up to

Times

100V. The outputs are independently controlled with

CMOS input thresholds (LM5100) or TTL input

•

Excellent Propagation Delay Matching (3 ns

thresholds (LM5101). An integrated high voltage

Typical)

diode is provided to charge the high side gate drive

•

Supply Rail Under-voltage Lockouts

bootstrap capacitor. A robust level shifter operates at

•

Low Power Consumption

high speed while consuming low power and providing

clean level transitions from the control logic to the

•

Pin Compatible with HIP2100/HIP2101

high side gate driver. Under-voltage lockout is

provided on both the low side and the high side

TYPICAL APPLICATIONS

power rails. This device is available in the standard

•

Current Fed Push-pull Converters

SOIC-8 pin and the WSON-10 pin packages.

•

Half and Full Bridge Power Converters

•

Synchronous Buck Converters

•

Two Switch Forward Power Converters

•

Forward with Active Clamp Converters

1

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2004–2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.