small external component count and fast transient response. The operation mode is selectable by EN voltage. A Diode Emulation Mode (DEM) is activated for increasing effic.

* Fixed Frequency Constant On-time Control; Resistor Programmable Frequency Adjustable from 100kHz to 700kHz
* .

A Product Line of Diodes Incorporated AP3591 SINGLE PHASE SYNCHRONOUS BUCK CONTROLLER Pin Assignments The AP3591 is a synchronous adaptive on-time buck controller providing high efficiency, excellent transient response and high DC output accuracy f.

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