TC665TEUN View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC665TEUN

SMBus™ PWM Fan Speed Controllers With Fan Fault Detection

Microchip Technology 

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 4 kV

*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

Name

VIN

CF

SCLK

SDA

GND

FAULT

NC

SENSE

VOUT

VDD

Function

Analog Input

Analog Output

Serial Clock Input

Serial Data In/Out (Open Drain)

Ground

Digital (Open Drain) Output

No Connection

Analog Input

Digital Output

Power Supply Input

ELECTRICAL SPECIFICATIONS

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

Operating Supply Current

Shutdown Mode Supply Current

VOUT PWM Output

VOUT Rise Time

VOUT Fall Time

Sink Current at VOUT Output

Source Current at VOUT Output

PWM Frequency

VDD

3.0

—

5.5

V

IDD

—

150

300

µA

IDDSHDN

—

5

10

µA

tR

—

—

tF

—

—

IOL

1.0

—

IOH

5.0

—

F

26

30

50

µsec

50

µsec

—

mA

—

mA

34

Hz

VIN Input

VIN Input Voltage for 100% PWM duty-cycle VC(MAX)

2.45

2.6

2.75

V

VC(MAX) - VC(MIN)

VCRANGE 1.25

1.4

1.55

V

VIN Input Resistance

—

10M

—



VIN Input Leakage Current

IIN

-1.0

—

+1.0

µA

SENSE Input

SENSE Input Threshold Voltage with

Respect to GND

VTHSENSE

80

100

120

mV

FAULT Output

FAULT Output LOW Voltage

FAULT Output Response Time

Fan RPM-to-Digital Output

VOL

—

—

0.3

V

tFAULT

—

2.4

—

sec

Fan RPM ERROR

-15

—

+15

%

2-Wire Serial Bus Interface

Logic Input High

VIH

2.1

—

—

V

Logic Input Low

VIL

—

—

0.8

V

Logic Output Low

VOL

—

—

0.4

V

Input Capacitance SDA, SCLK

CIN

—

10

15

pF

I/O Leakage Current

ILEAK

-1.0

—

+1.0

µA

SDA Output Low Current

IOLSDA

6

—

—

mA

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.

Pins 8, 9 Open

Pins 8, 9 Open

IOH = 5 mA, Note 1

IOL = 1 mA, Note 1

VOL = 10% of VDD

VOH = 80% of VDD

CF = 1 µF

VDD = 5.0 V

IOL = 2.5 mA

RPM > 1600

Note 2

IOL = 3 mA

Note 1

VOL = 0.6 V

 2002-2013 Microchip Technology Inc.

DS21737B-page 3

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