LOW COST, SINGLE TRIP POINT
TEMPERATURE SENSOR
TC622
TC624
Hysteresis
To prevent output "chattering" at the trip point tempera-
ture, the temperature detector in the TC622/624 has 2°C of
hysteresis (See Figure 1).
The outputs are driven active when the temperature
crosses the setpoint determined by the external resistor. As
temperature declines below the setpoint, the hysteresis
action will hold the outputs true until the temperature drops
2°C below the threshold.
TEMPERATURE
1
SET POINT
(SET POINT - 2 DEGREE C)
2
3
5-Pin TO-220
OUT
OUT
Figure 1. TC622/624 Hysteresis
PIN CONFIGURATIONS
8-Pin DIP
1
2
3
4
8
7
NC
V
DD
NC
T
SET
NC
OUT
OUT
GND
1
2
3
4
8-Pin SOIC
8
7
NC
V
DD
NC
T
SET
NC
OUT
OUT
GND
4
TC622EAT
TC622VAT
1 2 3 4 5
TC622CPA
TC622EPA
TC622VPA
6
5
TC622COA
TC622EOA
TC622VOA
6
5
8-Pin DIP
NC
OUT
OUT
GND
1
2
3
4
8-Pin SOIC
8
NC
V
DD
NC
T
SET
OUT
OUT
V
DD
NC
OUT
OUT
GND
1
2
3
4
8
7
NC
V
DD
NC
TC624CPA
TC624EPA
TC624VPA
6
TC624COA
TC624EOA
TC624VOA
7
6
5
5 T
SET
NOTE:
For TO-220 Package, Pin 3 is
connected to case heatsink.
GND
T
SET
5
6
7
8
TELCOM SEMICONDUCTOR, INC.
2-23
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
