TC651BEVUA データシートの表示（PDF） - Microchip Technology

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TC651BEVUA

Tiny Integrated Temperature Sensor & Brushless DC Fan Controller with Over-Temperature Alert

Microchip Technology 

TC650/TC651

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Input Voltage (VDD to GND) ................................... +6V

Output Voltage (OUT to GND) ................................. 6V

Voltage On Any Pin ....... (GND – 0.3V) to (VDD + 0.3V)

Package Thermal Resistance (θJA ) .............. 250°C/W

Operating Temperature Range .......... -40°C to +125°C

Storage Temperature ......................... -65°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.

TC650/TC651 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VDD = 2.8V to 5.5V, SHDN = VDD, TA = -40°C to 125°C unless otherwise specified.

Symbol

Parameter

Min

Typ.

Max Units Test Conditions

VDD

IDD

SHDN Input

Supply Voltage

Supply Current

2.8

—

5.5

V

—

50

90

µA PWM, TOVER are open

VIH

SHDN Input High Threshold

65

VIL

SHDN Input Low Threshold

—

PWM Output

—

—

%VDD

—

15

%VDD

VOL

VOH

tR

tF

fOUT

tSTARTUP

PWM Output Low Voltage

PWM Output High Voltage

PWM Rise Time

PWM Fall Time

PWM Frequency

Start-up Time

—

VDD - 0.5

—

—

10

—

—

—

10

10

15

32/fOUT

0.3

V ISINK = 1mA

—

V ISOURCE = 5mA

—

µsec IOH = 5mA, 1nF from

PWM to GND

—

µsec IOL = 1mA, 1nF from

PWM to GND

—

Hz

—

sec VDD Rises from GND,

or SHDN Released

Temperature Accuracy

TH ACC

High Temperature Accuracy

(TH –TL) ACC Temp. Range Accuracy

THYST

Auto-shutdown Hysteresis

TOVER Output

VHIGH

VLOW

TOVER ACC

TOVER HYST

TOVER Output High Voltage

TOVER Output Low Voltage

Absolute Accuracy

Trip Point Hysteresis

TH – 3

-1.0

-2.5

—

VDD - 0.5

—

—

—

TH

—

—

(TH -TL)/5

TH + 3

+1.0

+2.5

—

°C Note 1

°C (TH - TL) ≤ 20°C

°C (TH - TL) ≥ 20°C

°C TC651 Only

—

—

V ISOURCE = 1.2mA

—

0.4

V ISINK = 2.5mA

TH + 10

—

°C At Trip Point

5

—

°C

Note 1: Transition from 90% to 100% Duty Cycle.

© 2002 Microchip Technology Inc.

DS21450B-page 3

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