The LMG5126 is a stackable multiphase synchronous boost converter. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Up to 4 devices can be stacked with or without external clock.
VOUT can be dynamically programmed using the digital or analog ATRK/DTRK function. VI can be as low as 2.5V after startup as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 6.5V. The fixed switching frequency is set between 300kHz and 2.5MHz via a resistor on the RT-pin or the SYNCIN clock. The switching modes FPWM or Diode emulation can be changed during operation.
The implemented protections peak current limit, average input current limit, 120% input current limit, average inductor current monitor, over- and undervoltage protection or the thermal shutdown protect the device and the application.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LMG5126 Wide-Input, 2.5MHz, Boost Converter datasheet (Rev. B) | PDF | HTML | May 20, 2026 |
| Technical article | Four ways integrated GaN converters are redefining high-current power-supply design | PDF | HTML | Apr 20, 2026 | |
| Certificate | LMG5126EVM EU Declaration of Conformity (DoC). | Sep 8, 2025 |
For additional terms or required resources, click any title below to view the detail page where available.
The LMG5126 evaluation module (EVM) showcases the features and performance of the LMG5126 wide input voltage synchronous GaN boost converter. This EVM is designed for ease of configuration, enabling the user to evaluate many different applications on the same module. The standard configuration is (...)
The reference design is designed for high boost factor and high efficiency. The design operates over a wide input voltage range, starting from 3V using the LMG5126 boost converter with integrated Gallium Nitride (GaN) field-effect transistors (FETs). The reference design includes features such as (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-FCRLF (VBT) | 22 | Ultra Librarian |
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