TC670 datasheet(2/12 Pages) MICROCHIP

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TC670

DS21688B-page 2

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

VDD...................................................................................6.0V

All inputs and outputs w.r.t. ..... (GND

− 0.3V) to (VDD +0.3V)

Difference Input voltage ...................................... IVDD -GND

Output Short Circuit Current ..................................continuous

Current at Input Pin ................................................... +/-2 mA

Current at Output Pin .............................................. +/-25 mA

Junction Temperature, TJ ............................................. 150°C

ESD protectiononall pins

..................................................≥ 4kV

Operating Temperature Range........................-40°C to +85°C

Storage Temperature Range .........................-55°C to +150°C

Stresses above those listed under “Absolute Maximum Rat-

ings” 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. Expo-

sure to Absolute Maximum Rating conditions for extended

periods may affect device reliability.

TC670 ELECTRICAL SPECIFICATIONS

TEMPERATURE SPECIFICATIONS

Electrical Characteristics: Unless otherwise specified, all limits are specified at +25°C, VDD =3.0V to5.5V, CLEAR = Low.

Boldface type specifications apply for temperature range of -40°C to +85°C

Symbol

Parameters

Min

Typ

Max

Unit

Conditions

Power Supply:

VDD

Supply Voltage

3.0

—

5.5

IDD

Supply Current

—

150

µA

CLEAR Input:

VIH

CLEAR Logic Input High Level

0.8VDD

——

VIL

CLEAR Logic Input Low Level

—

0.2VDD

SENSE Input:

VTH(SENSE)

SENSE Input Level Threshold Voltage

—

124

—

RSENSE

SENSE Input Resistance

—

Ω

THRESHOLD Input:

THRESHOLD Input Voltage Minimum

—

0.0

—

THRESHOLD Input Voltage Maximum

—

2.4

—

THRESHOLD Input Resistance

—

100

—

Ω

ALERTACC

Programmed Fan Speed Alert Accuracy (1)

-10

—

+10

VDD =3.0V

ALERT Output:

VLOW

ALERT Output Low Voltage

—

0.3

ISINK =2.5 mA

tDELAY

ALERT Output Delay Time

—

176

—

Note 1:

The TC670 will operate properly over the entire power supply range of 3.0V to 5.5V. As VDD varies from 3.0V, accuracy will degrade

based on the percentage of VDD as shown in Section 3.0.

Electrical Characteristics: Unless otherwise specified, all limits are specified for -40°C to +85°C and VDD =3.0V to5.5V

Symbol

Parameters

Min

Typ

Max

Unit

Conditions

Temperature Ranges:

Specified Temperature Range

-40

—

+85

°C

Operating Temperature Range

-40

—

+85

°C

Thermal Package Resistances:

θJA

Thermal Resistance, 6L-SOT-23

—

230

—

°C/W

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