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Partname:AAT1109A
Description:ONE-CHANNEL BOOST SWITCHING REGULATOR
Manufacturer:Advanced Analogic Technologies
Datasheet:PDF (289K).
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The AAT1109A is a one-channel switching regulator control IC incorporating a soft start function and a short circuit protection function. Each device consists of an on-chip voltage reference, error amplifier, pulse width modulation controller, under-voltage protection, soft start and short circuit protection circuits. Switching frequencies up to 1MHz are set by an external resistor and capacitor. Soft-start time can be implemented by the SCP capacitor.

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