LM5113 is not recommended for new designs.
This product continues to be in production to support existing customers. Please consider one of these alternatives:
Same functionality and pinout but is not an equivalent to the compared device:
LMG1205 ACTIVE 1.2-A, 5-A 100-V, half bridge gate driver with 5-V UVLO for GaNFET and MOSFET This product has the same functionality and pinout with improved start-up performance. Only available with DSBGA package

Product details


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  • Independent High-Side and Low-Side TTL Logic Inputs
  • 1.2A/5A Peak Source/Sink Current
  • High-Side Floating Bias Voltage Rail Operates up to 100VDC
  • Internal Bootstrap Supply Voltage Clamping
  • Split Outputs for Adjustable Turn-on/Turn-off Strength
  • 0.6Ω /2.1Ω Pull-down/Pull-up Resistance
  • Fast Propagation Times (28ns Typical)
  • Excellent Propagation Delay Matching (1.5ns Typical)
  • Supply Rail Under-Voltage Lockout
  • Low Power Consumption
  • Packages
    • WSON-10 (4 mm x 4 mm)
    • DSBGA (2 mm x 2 mm)
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The LM5113 is designed to drive both the high-side and the low-side enhancement mode Gallium Nitride (GaN) FETs in a synchronous buck or a half bridge configuration. The floating high-side driver is capable of driving a high-side enhancement mode GaN FET operating up to 100V. The high-side bias voltage is generated using a bootstrap technique and is internally clamped at 5.2V, which prevents the gate voltage from exceeding the maximum gate-source voltage rating of enhancement mode GaN FETs. The inputs of the LM5113 are TTL logic compatible, and can withstand input voltages up to 14V regardless of the VDD voltage. The LM5113 has split gate outputs, providing flexibility to adjust the turn-on and turn-off strength independently.

In addition, the strong sink capability of the LM5113 maintains the gate in the low state, preventing unintended turn-on during switching. The LM5113 can operate up to several MHz. The LM5113 is available in a standard WSON-10 pin package and a 12-bump DSBGA package. The WSON-10 pin package contains an exposed pad to aid power dissipation. The DSBGA package offers a compact footprint and minimized package inductance.

open-in-new Find other Half-bridge drivers

Technical documentation

Design & development

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

Design tools & simulation

SNVJ002B.ZIP (2 KB) - PSpice Model
SNVM043D.ZIP (43 KB) - PSpice Model
SNVM459A.ZIP (16 KB) - TINA-TI Spice Model
SNVM460A.TSC (613 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

48Vin Digital POL with 3 Outputs Reference Design
PMP4486 — The PMP4486 is a GaN-based reference design solution for telecom and computing applications. The GaN module LMG5200 enables a high efficiency single stage conversion with an input range from 36 to 60V down to 29V, 12V and 1.0V. This design shows the benefits of a GaN based design with high (...)
document-generic Schematic document-generic User guide
48Vin, 300W 1/8brick Digital Module with GaN FET Reference Design
PMP4435 The PMP4435 is a DC-DC isolated digital module with GaN mosfet reference design targeted for industrial and telecom applications. The DC input range is 36V-60V, with 12V typical and the output is 12V/5A. An digital controller UCD3138A is used in the design. The efficiency is up to 95.8% with good (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DSBGA (YFX) 12 View options
WSON (DPR) 10 View options

Ordering & quality

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