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LM5100A, LM5100B, LM5100C

LM5101A, LM5101B, LM5101C

SNOSAW2Q – SEPTEMBER 2006 – REVISED NOVEMBER 2015

LM5100A/B/C, LM5101A/B/C 3-A, 2-A, and 1-A High-Voltage, High-Side

and Low-Side Gate Drivers

An integrated high-voltage diode is provided to

1 Features

charge the high-side gate drive bootstrap capacitor. A

1

•

Drives Both a High-Side and Low-Side N-Channel

robust level shifter operates at high speed while

MOSFETs

consuming low power and providing clean level

•

Independent High- and Low-Driver Logic Inputs

transitions from the control logic to the high-side gate

driver. Undervoltage lockout is provided on both the

•

Bootstrap Supply Voltage up to 118 V DC

low-side and the high-side power rails. These devices

•

Fast Propagation Times (25-ns Typical)

are available in the standard SOIC-8 pin, SO

•

Drives 1000-pF Load With 8-ns Rise and Fall

PowerPAD-8 pin, and the WSON-10 pin packages.

Times

The LM5100C and LM5101C are also available in

MSOP-PowerPAD-8 package. The LM5101A is also

•

Excellent Propagation Delay Matching (3-ns

available in WSON-8 pin package.

Typical)

•

Supply Rail Undervoltage Lockout

Device Information(1)

•

Low Power Consumption

PEAK OUTPUT

PART NUMBER

INPUT THRESHOLD

CURRENT

•

Pin Compatible With HIP2100/HIP2101

LM5100A

CMOS

3 A

2 Applications

LM5101A

TTL

3 A

LM5100B

CMOS

2 A

•

Current-Fed Push-Pull Converters

LM5101B

TTL

2 A

•

Half and Full Bridge Power Converters

LM5100C

CMOS

1 A

•

Synchronous Buck Converters

LM5101C

TTL

1 A

•

Two Switch Forward Power Converters

(1) For all available packages, see the orderable addendum at

•

Forward with Active Clamp Converters

the end of the data sheet.

3 Description

The LM5100A/B/C and LM5101A/B/C high-voltage

gate drivers are designed to drive both the high-side

and

the

low-side

N-Channel

MOSFETs

in

a

synchronous buck or a half-bridge configuration. The

floating high-side driver is capable of operating with

supply voltages up to 100 V. The A versions provide

a full 3-A of gate drive, while the B and C versions

provide 2 A and 1 A, respectively. The outputs are

independently controlled with CMOS input thresholds

(LM5100A/B/C) or TTL input thresholds

(LM5101A/B/C).

Simplified Block Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.