AM4961A

Document number: DS36626 Rev. 1 - 2

7 of 17

www.diodes.com

October 2013

© Diodes Incorporated

AM4961A

A Product Line of

Diodes Incorporated

Functional Descriptions

RD Pin

This is the fan locked status detector. This is an open collector drive giving an active pull down with the high level being provided by an external

pull up resistor. When fan is locked, RD pin is in off state.

Out1 and Out2 pin

Out1 and out2 pins provide H-bridge driver output for fan and motor coil connection.

This provides the supply for the device.

Supply Voltage

GND – Supply Return

This is the device supply ground return pin for control signal.

PGND –Power Supply Return

This is the device supply ground return pin for power output pin out1 and out2 will generally be the most negative supply pin to the fan.