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TELCOM SEMICONDUCTOR, INC.

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TC626*

TEMPERATURE LIMIT SWITCH

FEATURES

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Requires No External Components

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On-Chip Temperature Sensing

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TO-220 package for "Hot Spot" Mounting

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50mA Output Signal TO-220 Package (TC626VAB)

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TO-92 Package for Direct Circuit Board Mounting

APPLICATIONS

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Vibration-Immune Temperature Sensing

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Fan Speed Control Circuits

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System Overtemperature Shutdown

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Advanced Thermal Warning

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Consumer Products

GENERAL DESCRIPTION

The TC626 is a temperature limit detector that notifies

the system when measured temperature is above the fac-

tory-programmed setting. It is designed to replace mechani-

cal (bimetal) temperature limit switches and offers increased

ruggedness, higher reliability and greater setpoint accuracy.

It requires no external components.

The TC626 operates over a – 55

°C to +125°C tempera-

ture range. It is available in a TO-92 package, which is ideal

for ambient temperature sensing applications. It is also

available in a TO-220-3 package for heatsink temperature

measurement applications.

ORDERING INFORMATION

Temperature

Part Number*

Package

Range

TC626040VAB

TO-220-3

– 55

°C to +125°C

TC626040VZB

TO-92-3

– 55

°C to +125°C

TC626050VAB

TO-220-3

– 55

°C to +125°C

TC626050VZB

TO-92-3

– 55

°C to +125°C

TC626080VAB

TO-220-3

– 55

°C to +125°C

TC626080VZB

TO-92-3

– 55

°C to +125°C

TC626090VAB

TO-220-3

– 55

°C to +125°C

TC626090VZB

TO-92-3

– 55

°C to +125°C

TC626100VAB

TO-220-3

– 55

°C to +125°C

TC626100VZB

TO-92-3

– 55

°C to +125°C

*Trip-point temperature is designated as follows: Part numbers are

TC626xxxVAB or TC626VZB, where xxx = trip-point tempeature in

°C.

For high volume applications requiring different trip-points, contact

factory.

2

5V TO 18V

RELAY

1

3

NC

SYSTEM POWER

NC = NORMALLY CLOSED

PIN 1 SWITCHES 'HIGH' IF

TEMPERATURE GOES ABOVE

THE PRESET VALUE.

TC626

PIN CONFIGURATIONS

* PATENTED

TC626-6

8/23/96

TC626xxxVZB

12 3

12 3

123

TC626xxxVAB

TO-220-3

TO-92-3

SYSTEM OVERTEMPERATURE PROTECTION