TC622CPA datasheet(2/3 Pages) TELCOM

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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

—

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

——

IOH = 500µA

0.80 x VDD

——

VOL

TC622

– 40

°C ≤ TA ≤ +85°C, IOL = 500µA

—

0.15 x VDD

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

——

IOH = 500µA

0.8 x VDD

——

VOL

TC624

– 40

°C ≤ TA ≤ +85°C, IOL = 500µA

—

0.1 x VDD

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

± 1

T + 5

°C

TC624

TSET = Programmed Temperature

T – 5

± 1

T + 5

Trip Point Hysteresis

TC622

—

°C

TC624

—

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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