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- Model
- LM5104
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- Last added
- 2012-05-08
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National Semiconductor LM5104 High Voltage Half-Bridge Gate Driver Handbook
The LM5104 is a high‑voltage, dual‑output gate driver designed for driving the high‑side and low‑side N‑channel MOSFETs in synchronous buck or half‑bridge configurations. It features adaptive delay to prevent shoot‑through, a programmable dead‑time resistor, and an integrated bootstrap diode. The device operates from a single PWM input and supports supply voltages up to 118 V DC.
The document provides detailed pin descriptions, absolute maximum ratings, electrical characteristics, typical performance graphs, and mechanical data for the SOIC‑8 and LLP‑10 packages. It also includes recommended land‑pattern dimensions, packaging drawings, and compliance statements for life‑support and banned‑substance policies.
National Semiconductor LM5104 specifications
| Bootstrap supply voltage range | up to 118 V DC |
|---|---|
| Fast turn‑off propagation delay (typical) | 25 ns |
| Load drive capability | 1000 pF loads with 15 ns rise/fall times |
| Under‑voltage lockout | provided on both low‑side and high‑side power rails |
| Available packages | SOIC‑8, LLP‑10 |
Source: National Semiconductor LM5104 High Voltage Half-Bridge Gate Driver Handbook
All National Semiconductor LM5104 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the recommended supply voltages for the bootstrap capacitor?
The bootstrap supply voltage range is up to 118 V DC.
From: National Semiconductor LM5104 High Voltage Half-Bridge Gate Driver Handbook
Which package types are offered for the LM5104?
The LM5104 is available in SOIC‑8 and LLP‑10 packages.
From: National Semiconductor LM5104 High Voltage Half-Bridge Gate Driver Handbook
What is the maximum supply voltage for the LM5104?
The driver can operate with a bootstrap supply voltage up to 118 V DC and a high‑side supply voltage up to 100 V.
From: National Semiconductor LM5104 High Voltage Half-Bridge Gate Driver Handbook
How is dead‑time programmed on the LM5104?
Dead‑time is set by an external resistor connected to the RT pin; the resistor value determines the delay.
From: National Semiconductor LM5104 High Voltage Half-Bridge Gate Driver Handbook