TC664 datasheet(3/36 Pages) MICROCHIP

3 / 36 page

 2002 Microchip Technology Inc.

DS21737A-page 3

TC664/TC665

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings *

VDD..................................................................................6.5 V

Input Voltages .................................... -0.3 V to (VDD + 0.3 V)

Output Voltages ................................. -0.3 V to (VDD + 0.3 V)

Storage temperature .....................................-65°C to +150°C

Ambient temp. with power applied ................-40°C to +125°C

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

ESD protection on all pins

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

*Notice: Stresses above those listed under “Maximum rat-

ings” may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operational listings of this specification is not implied. Expo-

sure to maximum rating conditions for extended periods may

affect device reliability.

PIN FUNCTION TABLE

ELECTRICAL SPECIFICATIONS

Name

Function

VIN

Analog Input

Analog Output

SCLK

Serial Clock Input

SDA

Serial Data In/Out (Open Drain)

GND

Ground

FAULT

Digital (Open Drain) Output

No Connection

SENSE

Analog Input

VOUT

Digital Output

VDD

Power Supply Input

Electrical Characteristics: Unless otherwise noted, all limits are specified for VDD = 3.0 V to 5.5 V, -40°C <TA < +85°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Supply Voltage

VDD

3.0

—

5.5

Operating Supply Current

IDD

—

150

300

µA

Pins 8, 9 Open

Shutdown Mode Supply Current

IDDSHDN

—

µA

Pins 8, 9 Open

VOUT PWM Output

VOUT Rise Time

——

µsec

IOH = 5 mA, Note 1

VOUT Fall Time

——

µsec

IOL = 1 mA, Note 1

Sink Current at VOUT Output

IOL

1.0

—

VOL = 10% of VDD

Source Current at VOUT Output

IOH

5.0

—

VOH = 80% of VDD

PWM Frequency

CF = 1 µF

VIN Input

VIN Input Voltage for 100% PWM duty-cycle

VC(MAX)

2.45

2.6

2.75

VC(MAX) - VC(MIN)

VCRANGE

1.25

1.4

1.55

VIN Input Resistance

—

10M

—

Ω

VDD = 5.0 V

VIN Input Leakage Current

IIN

-1.0

—

+1.0

µA

SENSE Input

SENSE Input Threshold Voltage with

Respect to GND

VTHSENSE

100

120

FAULT Output

FAULT Output LOW Voltage

VOL

——

0.3

IOL = 2.5 mA

FAULT Output Response Time

tFAULT

—2.4

—

sec

Fan RPM-to-Digital Output

Fan RPM ERROR

-15

—

+15

RPM > 1600

2-Wire Serial Bus Interface

Logic Input High

VIH

2.1

—

Note 2

Logic Input Low

VIL

——

0.8

Logic Output Low

VOL

——

0.4

IOL = 3 mA

Input Capacitance SDA, SCLK

CIN

—10

Note 1

I/O Leakage Current

ILEAK

-1.0

—

+1.0

µA

SDA Output Low Current

IOLSDA

6—

—

VOL = 0.6 V

Note 1: Not production tested, ensured by design, tested during characterization.

2: For 5.0 V < VDD ≤ 5.5 V, the limit for VIH = 2.2 V.

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