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LM5114

ACTIVE

7.6-A/1.3-A single channel gate driver with 4-V UVLO and split outputs

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Data sheet

LM5114

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Power switch GaNFET, MOSFET Peak output current (A) 7.6 Input supply voltage (min) (V) 4 Input supply voltage (max) (V) 12.6 Features Controllable Rise and Fall Times Operating temperature range (°C) -40 to 125 Rise time (ns) 12 Fall time (ns) 3 Propagation delay time (µs) 0.012 Input threshold CMOS, TTL Channel input logic Inverting, Non-Inverting Input negative voltage (V) 0 Rating Catalog Undervoltage lockout (typ) (V) 3 Driver configuration Low Side
Number of channels 1 Power switch GaNFET, MOSFET Peak output current (A) 7.6 Input supply voltage (min) (V) 4 Input supply voltage (max) (V) 12.6 Features Controllable Rise and Fall Times Operating temperature range (°C) -40 to 125 Rise time (ns) 12 Fall time (ns) 3 Propagation delay time (µs) 0.012 Input threshold CMOS, TTL Channel input logic Inverting, Non-Inverting Input negative voltage (V) 0 Rating Catalog Undervoltage lockout (typ) (V) 3 Driver configuration Low Side
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8 WSON (NGG) 6 9 mm² 3 x 3
  • Independent Source and Sink Outputs for
    Controllable Rise and Fall Times
  • 4-V to 12.6-V Single Power Supply
  • 7.6-A/1.3-A Peak Sink and Source Drive Current
  • 0.23-Ω Open-drain Pulldown Sink Output
  • 2-Ω Open-drain Pullup Source Output
  • 12-ns (Typical) Propagation Delay
  • Matching Delay Time Between Inverting and
    Noninverting Inputs
  • TTL/CMOS Logic Inputs
  • 0.68-V Input Hysteresis
  • Up to 14-V Logic Inputs (Regardless of VDD Voltage)
  • Low Input Capacitance: 2.5-pF (Typical)
  • –40°C to 125°C Operating Temperature Range
  • Pin-to-Pin Compatible With MAX5048
  • 6-Pin SOT-23
  • Independent Source and Sink Outputs for
    Controllable Rise and Fall Times
  • 4-V to 12.6-V Single Power Supply
  • 7.6-A/1.3-A Peak Sink and Source Drive Current
  • 0.23-Ω Open-drain Pulldown Sink Output
  • 2-Ω Open-drain Pullup Source Output
  • 12-ns (Typical) Propagation Delay
  • Matching Delay Time Between Inverting and
    Noninverting Inputs
  • TTL/CMOS Logic Inputs
  • 0.68-V Input Hysteresis
  • Up to 14-V Logic Inputs (Regardless of VDD Voltage)
  • Low Input Capacitance: 2.5-pF (Typical)
  • –40°C to 125°C Operating Temperature Range
  • Pin-to-Pin Compatible With MAX5048
  • 6-Pin SOT-23

The LM5114 is designed to drive low-side MOSFETs in boost-type configurations or to drive secondary synchronous MOSFETs in isolated topologies. With strong sink current capability, the LM5114 can drive multiple FETs in parallel. The LM5114 also has the features necessary to drive low-side enhancement mode Gallium Nitride (GaN) FETs. The LM5114 provides inverting and noninverting inputs to satisfy requirements for inverting and Noninverting gate drive in a single device type. The inputs of the LM5114 are TTL/CMOS Logic compatible and withstand input voltages up to 14 V regardless of the VDD voltage. The LM5114 has split gate outputs, providing flexibility to adjust the turnon and turnoff strength independently. The LM5114 has fast switching speed and minimized propagation delays, facilitating high-frequency operation. The LM5114 is available in a 6-pin SOT-23 package and a 6-pin WSON package with an exposed pad to aid thermal dissipation.

The LM5114 is designed to drive low-side MOSFETs in boost-type configurations or to drive secondary synchronous MOSFETs in isolated topologies. With strong sink current capability, the LM5114 can drive multiple FETs in parallel. The LM5114 also has the features necessary to drive low-side enhancement mode Gallium Nitride (GaN) FETs. The LM5114 provides inverting and noninverting inputs to satisfy requirements for inverting and Noninverting gate drive in a single device type. The inputs of the LM5114 are TTL/CMOS Logic compatible and withstand input voltages up to 14 V regardless of the VDD voltage. The LM5114 has split gate outputs, providing flexibility to adjust the turnon and turnoff strength independently. The LM5114 has fast switching speed and minimized propagation delays, facilitating high-frequency operation. The LM5114 is available in a 6-pin SOT-23 package and a 6-pin WSON package with an exposed pad to aid thermal dissipation.
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Technical documentation

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Type Title Date
* Data sheet LM5114 Single 7.6-A Peak Current Low-Side Gate Driver datasheet (Rev. F) PDF | HTML 30 Nov 2015
Application note Review of Different Power Factor Correction (PFC) Topologies' Gate Driver Needs PDF | HTML 22 Jan 2024
Application brief External Gate Resistor Selection Guide (Rev. A) 28 Feb 2020
Application brief Understanding Peak IOH and IOL Currents (Rev. A) 28 Feb 2020
Application note Improving Efficiency of DC-DC Conversion through Layout 07 May 2019
Application brief How to overcome negative voltage transients on low-side gate drivers' inputs 18 Jan 2019
More literature Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) 29 Oct 2018
Application brief Enable Function with Unused Differential Input 11 Jul 2018
White paper A comprehensive methodology to qualify the reliability of GaN products 02 Mar 2015
White paper Advancing Power Supply Solutions Through the Promise of GaN 24 Feb 2015
User guide AN-2206 LM5114 Evaluation Board (Rev. A) 03 May 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5114BSDEVAL — LM5114 Boost Gate Driver Evaluation Board

The LM5114 is a single low-side gate driver with 7.6A/1.3A peak sink/source drive current capability. It can be used to drive standard Si MOSFETs or enhancement mode GaN FETs in boost type configurations or to drive secondary synchronous FETs in isolated topologies. The LM5114 evaluation board is (...)

User guide: PDF
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Simulation model

LM5114A PSpice Transient Model

SNVM318.ZIP (33 KB) - PSpice Model
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Simulation model

LM5114A TINA-TI Transient Reference Design

SNVM368.TSC (87 KB) - TINA-TI Reference Design
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Simulation model

LM5114A TINA-TI Transient Spice Model

SNVM367.ZIP (9 KB) - TINA-TI Spice Model
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Simulation model

LM5114A Unencrypted PSpice Transient Model

SNVMAD7.ZIP (1 KB) - PSpice Model
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Simulation model

LM5114B PSpice Transient Model

SNVM317.ZIP (30 KB) - PSpice Model
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Simulation model

LM5114B TINA-TI Transient Reference Design

SNVM365.TSC (87 KB) - TINA-TI Reference Design
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Simulation model

LM5114B TINA-TI Transient Spice Model

SNVM366.ZIP (9 KB) - TINA-TI Spice Model
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Simulation model

LM5114B Unencrypted PSpice Transient Model

SNVMAD8.ZIP (1 KB) - PSpice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

PMP22510 — Switched capacitor integrated buck (SCIB) power converter reference design

This switched capacitor integrated buck (SCIB) converter is a highly-optimized design for use in a high-power, high-density single output power converter, operating from a wide-range 40-V to 60-V input rail to produce a 8.0-V, 5.0-V, 3.3-V or 1.8-V rail up to 40A of load current each phase. This (...)
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Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBV) 6 Ultra Librarian
WSON (NGG) 6 Ultra Librarian
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