P_OUT

IN

INB

VSS

UVLO

VDD

DRIVER

N_OUT

Power-off

pull-down

clamp

UVLO

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LM5114

SNVS790F – JANUARY 2012 – REVISED NOVEMBER 2015

LM5114 Single 7.6-A Peak Current Low-Side Gate Driver

1 Features

3 Description

The LM5114 is designed to drive low-side MOSFETs

1

•

Independent Source and Sink Outputs for

in boost-type configurations or to drive secondary

Controllable Rise and Fall Times

synchronous MOSFETs in isolated topologies. With

•

4-V to 12.6-V Single Power Supply

strong sink current capability, the LM5114 can drive

•

7.6-A/1.3-A Peak Sink and Source Drive Current

multiple FETs in parallel. The LM5114 also has the

features necessary to drive low-side enhancement

•

0.23-

Ω Open-drain Pulldown Sink Output

mode Gallium Nitride (GaN) FETs. The LM5114

•

2-

Ω Open-drain Pullup Source Output

provides inverting and noninverting inputs to satisfy

•

12-ns (Typical) Propagation Delay

requirements for inverting and Noninverting gate drive

in a single device type. The inputs of the LM5114 are

•

Matching Delay Time Between Inverting and

TTL/CMOS Logic compatible and withstand input

Noninverting Inputs

voltages up to 14 V regardless of the VDD voltage.

•

TTL/CMOS Logic Inputs

The

LM5114

has

split

gate

outputs,

providing

•

0.68-V Input Hysteresis

flexibility to adjust the turnon and turnoff strength

independently. The LM5114 has fast switching speed

•

Up to 14-V Logic Inputs (Regardless of VDD

and minimized propagation delays, facilitating high-

Voltage)

frequency operation. The LM5114 is available in a 6-

•

Low Input Capacitance: 2.5-pF (Typical)

pin SOT-23 package and a 6-pin WSON package

•

–40°C to 125°C Operating Temperature Range

with an exposed pad to aid thermal dissipation.

•

Pin-to-Pin Compatible With MAX5048

Device Information(1)

•

6-Pin SOT-23

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SOT-23 (6)

2.90 mm × 1.60 mm

2 Applications

LM5114

WSON (6)

3.00 mm × 3.00 mm

•

Boost Converters

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

•

Flyback and Forward Converters

the end of the data sheet.

•

Secondary Synchronous FETs Drive in Isolated

Topologies

•

Motor Control

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.