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LM5109A

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1-A, 100-V half bridge gate driver with 8-V UVLO

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Data sheet

LM5109A

ACTIVE
Data sheet Order now

Product details

Bootstrap supply voltage (max) (V) 90 Power switch MOSFET Input supply voltage (min) (V) 8 Input supply voltage (max) (V) 14 Peak output current (A) 1 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Propagation delay time (µs) 0.025 Rise time (ns) 15 Fall time (ns) 15 Iq (mA) 0.01 Input threshold TTL Channel input logic TTL Switch node voltage (V) -1 Driver configuration Dual, Independent
Bootstrap supply voltage (max) (V) 90 Power switch MOSFET Input supply voltage (min) (V) 8 Input supply voltage (max) (V) 14 Peak output current (A) 1 Operating temperature range (°C) -40 to 125 Undervoltage lockout (typ) (V) 8 Rating Catalog Propagation delay time (µs) 0.025 Rise time (ns) 15 Fall time (ns) 15 Iq (mA) 0.01 Input threshold TTL Channel input logic TTL Switch node voltage (V) -1 Driver configuration Dual, Independent
SOIC (D) 8 29.4 mm² 4.9 x 6 WSON (NGT) 8 16 mm² 4 x 4
  • Drives Both a High-Side and Low-Side N-Channel MOSFET
  • 1A peak Output Current (1.0A Sink / 1.0A Source)
  • Independent TTL Compatible Inputs
  • Bootstrap Supply Voltage to 108V DC
  • Fast Propagation Times (30 ns Typical)
  • Drives 1000 pF Load with 15ns Rise and Fall Times
  • Excellent Propagation Delay Matching (2 ns Typical)
  • Supply Rail Under-Voltage Lockout
  • Low Power Consumption
  • Pin Compatible with ISL6700
  • Industry Standard SOIC-8 and Thermally Enhanced WSON-8 Package
  • Drives Both a High-Side and Low-Side N-Channel MOSFET
  • 1A peak Output Current (1.0A Sink / 1.0A Source)
  • Independent TTL Compatible Inputs
  • Bootstrap Supply Voltage to 108V DC
  • Fast Propagation Times (30 ns Typical)
  • Drives 1000 pF Load with 15ns Rise and Fall Times
  • Excellent Propagation Delay Matching (2 ns Typical)
  • Supply Rail Under-Voltage Lockout
  • Low Power Consumption
  • Pin Compatible with ISL6700
  • Industry Standard SOIC-8 and Thermally Enhanced WSON-8 Package

The LM5109A is a cost effective, 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 floating high-side driver is capable of working with rail voltages up to 90V. The outputs are independently controlled with TTL compatible input thresholds. The robust level shift technology operates at high speed while consuming low power and providing clean level transitions from the control input logic to the high-side gate driver. Under-voltage lockout is provided on both the low-side and the high-side power rails. The device is available in the SOIC and the thermally enhanced WSON packages.

The LM5109A is a cost effective, 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 floating high-side driver is capable of working with rail voltages up to 90V. The outputs are independently controlled with TTL compatible input thresholds. The robust level shift technology operates at high speed while consuming low power and providing clean level transitions from the control input logic to the high-side gate driver. Under-voltage lockout is provided on both the low-side and the high-side power rails. The device is available in the SOIC and the thermally enhanced WSON packages.
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Technical documentation

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Type Title Date
* Data sheet LM5109A High Voltage 1A Peak Half Bridge Gate Driver datasheet (Rev. C) PDF | HTML 23 Sep 2016
Application note Using Half-Bridge Gate Driver to Achieve 100% Duty Cycle for High Side FET PDF | HTML 25 Mar 2024
Application note Challenges and Solutions for Half-Bridge Gate Drivers in Bidirectional DC-DC Converters PDF | HTML 24 Jan 2024
Application note Bootstrap Circuitry Selection for Half Bridge Configurations (Rev. A) PDF | HTML 08 Sep 2023
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) 07 Apr 2021
Application note Implementing High-Side Switches Using Half-Bridge Gate Drivers for 48-V Battery. 12 May 2020
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 brief Small Price Competitive 100-V Driver for 48-V BLDC Motor Drives 22 Oct 2019
Application note Maximizing DC/DC converter designs with UCC27282 18 Jan 2019
Application note UCC27282 Improving motor drive system robustness 11 Jan 2019
More literature Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) 29 Oct 2018
Application note AN-1317 Selection of External Bootstrap Diode for LM510X Devices (Rev. B) 04 May 2018
EVM User's guide AN-1299 LM5041 Evaluation Board (Rev. A) 06 May 2013
EVM User's guide AN-1331 LM5033 Evaluation Board (Rev. A) 06 May 2013

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Supported products & hardware

Supported products & hardware

Products
Half-bridge drivers
LM25101 — 3-A, 2-A or 1-A half bridge gate driver with 8-V UVLO and TTL inputs LM5100A — 3-A, 100-V half bridge gate driver with 8-V UVLO and CMOS inputs LM5100B — 2-A, 100-V half bridge gate driver with 8-V UVLO and CMOS inputs LM5100C — 1-A, 100-V half bridge gate driver with 8-V UVLO and CMOS Imputs LM5101 — High voltage high side and low side gate driver LM5101A — 3-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs LM5101B — 2-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs LM5101C — 1-A, 100-V half bridge gate driver with 8-V UVLO and TTL Imputs LM5102 — 2-A, 100-V half bridge gate driver with 8-V UVLO and programmable delay LM5104 — 2-A, 100-V half bridge gate driver with 8-V UVLO and adaptive delay LM5106 — 1.2-A, 1.8-A 100-V half bridge gate driver with 8V-UVLO and programmable dead-time LM5107 — 1.4-A, 100-V half bridge gate driver with 8-V UVLO LM5108 — 2.6-A, 110-V half bridge gate driver with enable and interlock LM5109A — 1-A, 100-V half bridge gate driver with 8-V UVLO LM5109B — 1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity
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TIDA-00476 — Highly Efficient, Versatile Bi-Directional Power Converter for Energy Storage and DC Home Solutions

TIDA-00476 is comprised of a single DC-DC power stage, which can work as a synchronous buck converter or a synchronous boost converter, enabling bidirectional power flow between DC power source and energy storage system. Operating in synchronous buck mode, the system works as a MPPT controlled (...)
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WSON (NGT) 8 Ultra Librarian
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