LM56

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SNIS120G – APRIL 2000 – REVISED FEBRUARY 2013

FUNCTIONAL DESCRIPTION

Pin Functions

This is the positive supply voltage pin. This pin should be bypassed with a 0.1 µF capacitor to ground.

GND

This is the ground pin.

This is the 1.250V bandgap voltage reference output pin. In order to maintain trip point accuracy this pin

should source a 50 µA load.

This is the temperature sensor output pin.

OUT1

This is an open collector digital output. OUT1 is active LOW. It goes LOW when the temperature is greater

drive a fan motor.

OUT2

This is an open collector digital output. OUT2 is active LOW. It goes LOW when the temperature is greater

directly drive a fan motor.

This is the input pin for the temperature trip point voltage for OUT1.

This is the input pin for the low temperature trip point voltage for OUT2.

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