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TC622 Datasheet(PDF) 2 Page - TelCom Semiconductor, Inc

Part No. TC622
Description  LOW COST, SINGLE TRIP POINT TEMPERATURE SENSOR
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Maker  TELCOM [TelCom Semiconductor, Inc]
Homepage  http://www.telcom-semi.com
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TC622 Datasheet(HTML) 2 Page - TelCom Semiconductor, Inc

   
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TELCOM SEMICONDUCTOR, INC.
ELECTRICAL CHARACTERISTICS (Over Operating Temperature Range, unless otherwise specified.)
Parameter
Conditions
Min
Typ
Max
Unit
Supply Voltage Range
TC622
4.5
18
V
TC624
2.7
4.5
Supply Current
TC622
5.0V
≤ VDD ≤ 18V
200
600
µA
TC624
2.7V
≤ VDD ≤ 4.5V
170
300
VOH
TC622
5.0V
≤ VDD ≤ 18V,
– 40
°C ≤ TA ≤ +125°C, IOH = 250µA
0.90 x VDD
——
V
IOH = 500µA
0.80 x VDD
——
VOL
TC622
– 40
°C ≤ TA ≤ +85°C, IOL = 500µA
0.15 x VDD
V
IOL = 1mA
0.30 x VDD
– 40
°C ≤ TA ≤ +125°C, IOL = 1mA
0.35 x VDD
VOH
TC624
2.7V
≤ VDD ≤ 4.5V,
– 40
°C ≤ TA ≤ +125°C, IOH = 250µA
0.9 x VDD
——
V
IOH = 500µA
0.8 x VDD
——
VOL
TC624
– 40
°C ≤ TA ≤ +85°C, IOL = 500µA
0.1 x VDD
V
IOL = 1mA
0.2 x VDD
– 40
°C ≤ TA ≤ +125°C, IOL = 1mA
0.25 x VDD
Absolute Accuracy
TC622
TSET = Programmed Temperature
T – 5
T
± 1
T + 5
°C
TC624
TSET = Programmed Temperature
T – 5
T
± 1
T + 5
Trip Point Hysteresis
TC622
2
°C
TC624
2
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (TC622) .............................................20V
(TC624) ........................................... 5.5V
Input Voltage Any Input ....... (GND – 0.3V) to (VDD +0.3V)
Operating Temperature ......................... – 40
°C to +125°C
C Version ............................................... 0
°C to +70°C
E Version .......................................... – 40
°C to +85°C
V Version ........................................ – 40
°C to +125°C
Maximum Junction Temperature ........................... +150
°C
*Stresses above those listed under "Absolute Maximum Ratings" may
cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions above
those indicated in the operation sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
Storage Temperature ............................ – 65
°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300
°C
The TC622 and TC624 are single point temperature
detectors ideal for use in a wide variety of applications.
When the temperature of the device exceeds the pro-
grammed temperature trip point, TSET, the OUT and OUT
outputs are driven into their active states. The desired trip-
point temperature is programmed with a single external
resistor connected between the TSET input and VCC. The
relationship between the resistor value and the trip point
temperature is given by the equation below.
RTRIP = 0.5997 x T 2.1312
Where Rtrip = Programming resistor value in Ohms
T = Desired trip temperature in degrees Kelvin.
For example, to program the device to trip at 50
°C,
the programming resistor is:
RTRIP = 0.5997 x ((50 + 273.15)2.1312) = 133,652 Ω
DETAILED DESCRIPTION
LOW COST, SINGLE TRIP POINT
TEMPERATURE SENSOR
TC622
TC624


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