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LM2103

ACTIVE

107-V, 0.5-A/0.8-A half-bridge gate driver with 8-V UVLO, dead time and inverting input pin.

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Data sheet

LM2103

ACTIVE
Data sheet Order now

Product details

Bootstrap supply voltage (max) (V) 107 Power switch IGBT, MOSFET Input supply voltage (min) (V) 9 Input supply voltage (max) (V) 18 Peak output current (A) 0.65 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Fall time (ns) 18 Iq (mA) 0.0333 Input threshold CMOS, TTL Channel input logic Inverting, Noninverting Switch node voltage (V) -1 Features Dead time control Driver configuration Single input
Bootstrap supply voltage (max) (V) 107 Power switch IGBT, MOSFET Input supply voltage (min) (V) 9 Input supply voltage (max) (V) 18 Peak output current (A) 0.65 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Fall time (ns) 18 Iq (mA) 0.0333 Input threshold CMOS, TTL Channel input logic Inverting, Noninverting Switch node voltage (V) -1 Features Dead time control Driver configuration Single input
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Drives two N-channel MOSFETs in half-bridge configuration
  • 8-V typical undervoltage lockout on GVDD
  • 107-V absolute maximum voltage on BST
  • –19.5-V absolute maximum negative transient voltage handling on SH
  • 0.5-A/0.8-A peak source/sink currents
  • 475-ns typical fixed internal dead-time
  • Built-in cross conduction prevention
  • 115-ns typical propagation delay
  • Inverting input pin INL
  • Drives two N-channel MOSFETs in half-bridge configuration
  • 8-V typical undervoltage lockout on GVDD
  • 107-V absolute maximum voltage on BST
  • –19.5-V absolute maximum negative transient voltage handling on SH
  • 0.5-A/0.8-A peak source/sink currents
  • 475-ns typical fixed internal dead-time
  • Built-in cross conduction prevention
  • 115-ns typical propagation delay
  • Inverting input pin INL

The LM2103 is a compact, 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 configuration. The INL inverting input allows the driver to be used in either dual or single PWM input applications.

The fixed dead-time and the –1-V DC and –19.5-V transient negative voltage handling on the SH pin improve the system robustness in high noise applications. The LM2103 is available in an 8-pin SOIC package compatible with industry standard pinouts. Undervoltage lockout (UVLO) is provided on both the low-side and the high-side power rails for protection during power up and power down.

The LM2103 is a compact, 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 configuration. The INL inverting input allows the driver to be used in either dual or single PWM input applications.

The fixed dead-time and the –1-V DC and –19.5-V transient negative voltage handling on the SH pin improve the system robustness in high noise applications. The LM2103 is available in an 8-pin SOIC package compatible with industry standard pinouts. Undervoltage lockout (UVLO) is provided on both the low-side and the high-side power rails for protection during power up and power down.
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Technical documentation

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* Data sheet LM2103 107-V, 0.5-A/0.8-A Half-Bridge Driver with 8-V UVLO, Dead Time, and Inverting Input datasheet (Rev. A) PDF | HTML Aug 9, 2023
Application note Mapping Application Requirements with the 120V Halfbridge Gate Driver (Rev. A) PDF | HTML Feb 27, 2026
Application brief Why Low-Side Gate Drivers are Better Than Discrete Designs PDF | HTML Nov 13, 2025
Application note Benefits and Use of Single Input Gate Drivers with Programmable Dead Time PDF | HTML Apr 23, 2025
Product overview LM2x0x: TI's First 2mm by 2mm Half-Bridge Gate Driver PDF | HTML Apr 10, 2025
Application note Using Half-Bridge Gate Driver to Achieve 100% Duty Cycle for High Side FET PDF | HTML Mar 25, 2024
Application note Challenges and Solutions for Half-Bridge Gate Drivers in Bidirectional DC-DC Converters PDF | HTML Jan 24, 2024
Application note How to Choose a Gate Driver for DC Motor Drives PDF | HTML Oct 5, 2023
Application note Bootstrap Circuitry Selection for Half Bridge Configurations (Rev. A) PDF | HTML Sep 8, 2023
Application note Comparative Analysis of Two Different Methods for Gate-Drive Current Boosting (Rev. A) PDF | HTML Feb 17, 2022
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) Apr 7, 2021
Application note Implementing High-Side Switches Using Half-Bridge Gate Drivers for 48-V Battery. May 12, 2020
Application brief External Gate Resistor Selection Guide (Rev. A) Feb 28, 2020
Application brief Understanding Peak IOH and IOL Currents (Rev. A) Feb 28, 2020
Application brief Small Price Competitive 100-V Driver for 48-V BLDC Motor Drives Oct 22, 2019
Application note Maximizing DC/DC converter designs with UCC27282 Jan 18, 2019
Application note UCC27282 Improving motor drive system robustness Jan 11, 2019

Design & development

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Evaluation board

LM2105EVM — LM2105 evaluation module for 105-V half-bridge driver with integrated bootstrap diode

The LM2105 evaluation module (EVM) is a platform for evaluating LM2105 performance. LM2105 is a 105-V, boot-voltage, high-side, low-side driver with 0.5-A peak source and 0.8-A sink current for driving two N-channel metal–oxide–semiconductor field-effect transistors (MOSFETs). The same (...)

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Simulation model

LM2103 PSpice Transient Model (Rev. A)

SNVMCE3A.ZIP (811 KB) - PSpice model
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LM2X0X-CALC — LM2x0x Schematic Review Template

LM2x0x Schematic Review Template (zip)
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