APL6535 datasheet(9/13 Pages) ANPEC

9 / 13 page

Rev. A.1 - May., 2005

www.anpec.com.tw

APL6535

Application Information

PGOOD

The APL6535 is a four channel supervisory IC designed

to monitor multiple voltages greater than 0.7V. This

IC is suitable for both microprocessors or industrial

system applications. Once biased to 2.6V and en-

abled the IC continuously monitors from one to four

voltages independently through external resistor di-

viders comparing each VMON pin voltage to an inter-

nal 0.633V reference. The PGOOD output is an open-

drain to allow ORing of the signals and interfacing to a

wide range of logic levels. If less than four voltages

are being monitored, connect the unused VMON pins

to VCC. The PGOOD pin has an internal 20kW pull-up

to V CC making an external pull-up resistor

unnecessary.

Falling Edge Glitch Filter

Once any VMON input falls below 0.633V the PGOOD

output is pulled low, the VMON inputs are designed

to reject fast transients (30us).

APL6535 Datasheet(PDF) 9 Page - Anpec Electronics Coropration