LMG1205 100-V, 1.2-A, 5-A, Half-Bridge Gate Driver for Enhancement Mode GaN FETs | TI.com

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100-V, 1.2-A, 5-A, Half-Bridge Gate Driver for Enhancement Mode GaN FETs


Recommended alternative parts

  • LMG1210  -  The LMG1210 offers superior switching performance, resistor-configurable deadtime, and an internal LDO for a wider VDD range.


The LMG1205 is designed to drive both the high-side and the low-side enhancement mode Gallium Nitride (GaN) FETs in a synchronous buck, boost, or half-bridge configuration. The device has an integrated 100-V bootstrap diode and independent inputs for the high-side and low-side outputs for maximum control flexibility. The high-side bias voltage is generated using a bootstrap technique and is internally clamped at 5 V, which prevents the gate voltage from exceeding the maximum gate-source voltage rating of enhancement mode GaN FETs. The inputs of the LMG1205 are TTL logic compatible and can withstand input voltages up to 14 V regardless of the VDD voltage. The LMG1205 has split-gate outputs, providing flexibility to adjust the turnon and turnoff strength independently.

In addition, the strong sink capability of the LMG1205 maintains the gate in the low state, preventing unintended turnon during switching. The LMG1205 can operate up to several MHz. The LMG1205 is available in a 12-pin DSBGA package that offers a compact footprint and minimized package inductance.


  • Independent High-Side and Low-Side
    TTL Logic Inputs
  • 1.2-A Peak Source, 5-A Sink Current
  • High-Side Floating Bias Voltage Rail
    Operates up to 100 VDC
  • Internal Bootstrap Supply Voltage Clamping
  • Split Outputs for Adjustable
    Turnon, Turnoff Strength
  • 0.6-Ω Pulldown, 2.1-Ω Pullup Resistance
  • Fast Propagation Times (35 ns Typical)
  • Excellent Propagation Delay Matching
    (1.5 ns Typical)
  • Supply Rail Undervoltage Lockout
  • Low Power Consumption

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Compare all products in Half-bridge drivers Email Download to Excel
Part number Order Number of channels (#) Power switch Bus voltage (Max) (V) Peak output current (A) Input VCC (Min) (V) Input VCC (Max) (V) Rise time (ns) Fall time (ns) Prop delay (ns) Iq (uA) Input threshold Channel input logic Negative voltage handling at HS pin (V) Features Rating Operating temperature range (C) Package Group
LMG1205 Order now 2     MOSFET
  5     4.5     5.5     7     3.5     35       TTL           Catalog     -40 to 125     DSBGA | 12    
LM5113 Samples not available 2     MOSFET
107     5     4.5     5.5     7     3.5     30     150     TTL     TTL     -5       Catalog     -40 to 125     WSON | 10    
LM5113-Q1 Order now 2     MOSFET
  5     4.5     5.5     7     3.5     30     150     TTL           Automotive     -40 to 125     WSON | 10    
LMG1020 Order now 1     MOSFET
  7     4.75     5.25     0.4     0.4     2.5       TTL         low-side, ultra-fast     Catalog     -40 to 125     DSBGA | 6    
LMG1210 Order now 2     MOSFET
  3     6     18     0.5     0.5     10       TTL           Catalog     -40 to 125     WQFN | 19