2-29
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
TC626*
TEMPERATURE LIMIT SWITCH
FEATURES
I
I
I
I
I
Requires No External Components
On-Chip Temperature Sensing
TO-220 package for "Hot Spot" Mounting
50mA Output Signal TO-220 Package (TC626VAB)
TO-92 Package for Direct Circuit Board Mounting
APPLICATIONS
I
I
I
I
I
Vibration-Immune Temperature Sensing
Fan Speed Control Circuits
System Overtemperature Shutdown
Advanced Thermal Warning
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
Package
Part Number*
Range
TC626040VAB
TC626040VZB
TC626050VAB
TC626050VZB
TC626080VAB
TC626080VZB
TC626090VAB
TC626090VZB
TC626100VAB
TC626100VZB
*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.
TO-220-3
TO-92-3
TO-220-3
TO-92-3
TO-220-3
TO-92-3
TO-220-3
TO-92-3
TO-220-3
TO-92-3
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
– 55
°
C to +125
°
C
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
1 2 3
1 2 3
1
2
3
TC626xxxVAB
O
G
V
D
O
G
V
D
TO-220-3
TO-92-3
SYSTEM OVERTEMPERATURE PROTECTION