The LM2105 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 integrated bootstrap diode saves board space and reduces system cost by eliminating the need for an external discrete diode.
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 small, thermally-enhanced 8-pin WSON package improves PCB layout by allowing the driver to be placed closer to the motor phases. The LM2105 is also 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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM2105 107-V, 0.5-A, 0.8-A Half-Bridge Driver with 5-V UVLO and Integrated Bootstrap Diode datasheet (Rev. C) | PDF | HTML | 09 Sep 2023 |
| Application note | How to Choose a Gate Driver for DC Motor Drives | PDF | HTML | 05 Oct 2023 | |
| EVM User's guide | LM2105EVM User's Guide | PDF | HTML | 14 Feb 2023 | |
| Certificate | LM2105EVM EU RoHS Declaration of Conformity (DoC) | 01 Feb 2023 | ||
| 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 |
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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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| WSON (DSG) | 8 | Ultra Librarian |
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