Am4961a, Functional descriptions – Diodes AM4961A User Manual
Page 7
AM4961A
Document number: DS36626 Rev. 1 - 2
7 of 17
October 2013
© Diodes Incorporated
AM4961A
A Product Line of
Diodes Incorporated
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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.
V
CC
– I
C
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.