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Data sheet
LM5100A
- Drives Both a High-Side and Low-Side N-Channel
MOSFETs - Independent High- and Low-Driver Logic Inputs
- Bootstrap Supply Voltage up to 118 V DC
- Fast Propagation Times (25-ns Typical)
- Drives 1000-pF Load With 8-ns Rise and Fall
Times - Excellent Propagation Delay Matching (3-ns
Typical) - Supply Rail Undervoltage Lockout
- Low Power Consumption
- Pin Compatible With HIP2100/HIP2101
The LM5100A/B/C and LM5101A/B/C high-voltage gate drivers are 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 operating with supply voltages up to 100 V. The A versions provide a full 3-A of gate drive, while the B and C versions provide 2 A and 1 A, respectively. The outputs are independently controlled with CMOS input thresholds (LM5100A/B/C) or TTL input thresholds (LM5101A/B/C).
An integrated high-voltage diode is provided to charge the high-side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high-side gate driver. Undervoltage lockout is provided on both the low-side and the high-side power rails. These devices are available in the standard SOIC-8 pin, SO PowerPAD-8 pin, and the WSON-10 pin packages. The LM5100C and LM5101C are also available in MSOP-PowerPAD-8 package. The LM5101A is also available in WSON-8 pin package.
Technical documentation
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View all 7 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM5100A/B/C, LM5101A/B/C 3-A, 2-A, and 1-A High-Voltage, High-Side and Low-Side Gate Drivers datasheet (Rev. Q) | PDF | HTML | 03 Dec 2015 |
| 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 | ||
| More literature | Fundamentals of MOSFET and IGBT Gate Driver Circuits (Replaces SLUP169) (Rev. A) | 29 Oct 2018 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 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 |
Design & development
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Simulation model
LM5100A TINA-TI Transient Reference Design
SNOM353.TSC (787 KB) - TINA-TI Reference Design
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| WSON (DPR) | 10 | Ultra Librarian |
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