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TC624 Datasheet Preview

TC624 Datasheet

(TC622 / TC624) LOW COST SINGLE TRIP POINT TEMPERATURE SENSOR

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1
TC622
TC624
LOW COST, SINGLE TRIP POINT TEMPERATURE SENSOR
FEATURES
s Temperature Set Point Easily Programs with a
Single External Resistor
s Operates with 2.7V Power Supply (TC624)
s TO-220 Package for Direct Mounting to Heatsink
(TC622xAT) or Standard 8-Pin PDIP and SOIC
s Cost Effective
APPLICATIONS
s Power Supply Over-temperature Detection
s Consumer Electronics
s Fire/ Heat Detection
s UPS's, Amplifiers, Motors
s CPU Thermal Management in PC's
The TC622 has a power supply voltage range of 4.5V to
18.0V while the TC624 operates over a power supply range
of 2.7V to 4.5V. Both devices are usable over a temperature
range of – 40°C to +125°C (TC622Vxx, TC624Vxx). Both
devices feature low supply current making them suitable for
many portable applications.
Eight-pin through-hole and surface mount packages are
available. The TC622 is also offered in a 5-pin TO-220
package.
FUNCTIONAL BLOCK DIAGRAM
TEMP
SENSOR
GENERAL DESCRIPTION
The TC622 and TC624 are programmable solid state
temperature switches designed to replace mechanical
switches in sensing and control applications. Both devices
integrate the temperature sensor along with a voltage refer-
ence and all required detector circuitry to form a stand-alone
temperature switch. The desired temperature set point is
set by the user with a single external resistor.
Ambient temperature is sensed and compared to the
programmed setpoint. The OUT and OUT outputs are
driven to their active state when the measured temperature
exceeds the programmed setpoint.
TEMPERATURE
TO VOLTAGE
CONVERTER
VOLTAGE
REFERENCE
GENERATOR
TSET
VDD GND
OUT
OUT
2
3
4
5
ORDERING INFORMATION
Part No.
TC622COA
TC622CPA
TC622EAT
TC622EOA
TC622EPA
TC622VAT
TC622VOA
TC622VPA
TC624COA
TC624CPA
TC624EOA
TC624EPA
TC624VOA
TC624VPA
Voltage Operation
4.5V to 18V
4.5V to 18V
4.5V to 18V
4.5V to 18V
4.5V to 18V
4.5V to 18V
4.5V to 18V
4.5V to 18V
2.7V to 4.5V
2.7V to 4.5V
2.7V to 4.5V
2.7V to 4.5V
2.7V to 4.5V
2.7V to 4.5V
TELCOM SEMICONDUCTOR, INC.
Package
8-Pin SOIC
8-Pin Plastic DIP
5-Pin TO-220
8-Pin SOIC
8-Pin Plastic DIP
5-Pin TO-220
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
Ambient Temperature
0°C to +70°C
0°C to +70°C
– 40°C to +85°C
– 40°C to +85°C
– 40°C to +85°C
– 40°C to +125°C
– 40°C to +125°C
– 40°C to +125°C
0°C to +70°C
0°C to +70°C
– 40°C to +85°C
– 40°C to +85°C
– 40°C to +125°C
– 40°C to +125°C
TC622/24-4 9/25/96
2-21
6
7
8




TelCom Semiconductor

TC624 Datasheet Preview

TC624 Datasheet

(TC622 / TC624) LOW COST SINGLE TRIP POINT TEMPERATURE SENSOR

No Preview Available !

TC622
TC624
LOW COST, SINGLE TRIP POINT
TEMPERATURE SENSOR
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
Storage Temperature ............................ – 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300°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.
ELECTRICAL CHARACTERISTICS (Over Operating Temperature Range, unless otherwise specified.)
Parameter
Supply Voltage Range
Supply Current
VOH
TC622
TC624
TC622
TC624
TC622
VOL TC622
VOH TC624
VOL TC624
Absolute Accuracy
Trip Point Hysteresis
TC622
TC624
TC622
TC624
Conditions
5.0V VDD 18V
2.7V VDD 4.5V
5.0V VDD 18V,
– 40°C TA +125°C, IOH = 250µA
IOH = 500µA
– 40°C TA +85°C, IOL = 500µA
IOL = 1mA
– 40°C TA +125°C, IOL = 1mA
2.7V VDD 4.5V,
– 40°C TA +125°C, IOH = 250µA
IOH = 500µA
– 40°C TA +85°C, IOL = 500µA
IOL = 1mA
– 40°C TA +125°C, IOL = 1mA
TSET = Programmed Temperature
TSET = Programmed Temperature
Min
4.5
2.7
0.90 x VDD
0.80 x VDD
0.9 x VDD
0.8 x VDD
T–5
T–5
Typ
200
170
T±1
T±1
2
2
Max
18
4.5
600
300
0.15 x VDD
0.30 x VDD
0.35 x VDD
0.1 x VDD
0.2 x VDD
0.25 x VDD
T+5
T+5
Unit
V
µA
V
V
V
V
°C
°C
DETAILED DESCRIPTION
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
2-22 TELCOM SEMICONDUCTOR, INC.


Part Number TC624
Description (TC622 / TC624) LOW COST SINGLE TRIP POINT TEMPERATURE SENSOR
Maker TelCom Semiconductor
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TC624 Datasheet PDF






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