APW7323KAI-TRG datasheet(13/22 Pages) ANPEC

Part #	APW7323KAI-TRG

Description	3.2A, 5V, 1MHz Synchronous Buck Converter

PDF	22 Pages

Scroll/Zoom	100%

Manufacturer	ANPEC [Anpec Electronics Coropration]

Direct Link	http://www.anpec.com.tw

Logo

13 / 22 page

Rev. A.5 - Aug., 2013

APW7323/A

www.anpec.com.tw

Function Description (Cont.)

Power Good Indicator

POK is actively held low in shutdown and soft-start status.

In the soft-start process, the POK is an open-drain. When

the soft-start is finished, the POK is released. In normal

operation, the POK window is from 87.5% to 112.5% of

the converter reference voltage. When the output voltage

has to stay within this window, POK signal will become

high after 0.5ms internal delay. When the output voltage

outruns 82.5% or 117.5% of the target voltage, POK sig-

nal will be pulled low immediately. In order to prevent

false POK drop, capacitors need to parallel at the output

to confine the voltage deviation with severe load step

transient. The POK pin, if used, needs an axternal pull

high resistor, the recommended resistor should be in

the range of 30K

Ω to 100KΩ.

APW7323KAI-TRG Datasheet(PDF) 13 Page - Anpec Electronics Coropration