The LM5109A is a cost effective, 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 floating high-side driver is capable of working with rail voltages up to 90V. The outputs are
independently controlled with TTL compatible input thresholds. The robust level shift technology
operates at high speed while consuming low power and providing clean level transitions from the
control input logic to the high-side gate driver. Under-voltage lockout is provided on both the
low-side and the high-side power rails. The device is available in the SOIC and the thermally
enhanced WSON packages.
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