TC651 datasheet(3/18 Pages) MICROCHIP

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DS21450D-page 3

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)

Operating Temperature Range ......... –40

C to +125C

Storage Temperature ........................ –65

C to +150C

† Notice: Stresses above those listed under "Absolute Maxi-

mum 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.

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise specified, VDD = 2.8V to 5.5V, SHDN = VDD, TA = –40C to +125C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Supply Voltage

VDD

2.8

—

5.5

Supply Current

IDD

—50

µA

PWM, TOVER are open

SHDN Input

SHDN Input High Threshold

VIH

—

%VDD

SHDN Input Low Threshold

VIL

——

%VDD

PWM Output

PWM Output Low Voltage

VOL

—

0.3

ISINK = 1 mA

PWM Output High Voltage

VOH

VDD – 0.5

—

ISOURCE = 5 mA

PWM Rise Time

—10

—

µs

IOH = 5 mA, 1 nF from

PWM to GND

PWM Fall Time

—10

—

µs

IOL = 1 mA, 1 nF from

PWM to GND

PWM Frequency

fOUT

—

Start-up Time

tSTARTUP

—

32/fOUT

—sec

VDD Rises from GND

or SHDN Released

Temperature Accuracy

High Temperature Accuracy

TH ACC

TH – 3

TH + 3

°C

Note 1

Temperature Range Accuracy (TH –TL) ACC

–1.0

—

+1.0

°C

(TH – TL)  20C

–2.5

—

+2.5

°C

(TH – TL)  20C

Auto-shutdown Hysteresis

THYST

—(TH -TL)/5

—

°C

TC651 Only

TOVER Output

TOVER Output High Voltage

VHIGH

VDD – 0.5

—

ISOURCE = 1.2 mA

TOVER Output Low Voltage

VLOW

—

0.4

ISINK = 2.5 mA

Absolute Accuracy

TOVER ACC

—TH + 10

—

°C

At Trip Point

Trip Point Hysteresis

TOVER HYST

—5

—

°C

Note 1:

Transition from 90% to 100% Duty Cycle.

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