TC622 View Datasheet(PDF) - TelCom Semiconductor Inc => Microchip

Part Name

Description

Manufacturer

TC622

LOW COST, SINGLE TRIP POINT TEMPERATURE SENSOR

TelCom Semiconductor Inc => Microchip 

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 Ω

2-22

TELCOM SEMICONDUCTOR, INC.

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