TC646 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC646

PWM Fan Speed Controller with Auto-Shutdown and FanSense™ Technology

Microchip Technology 

TC646

DC ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, TMIN ≤ TA ≤ TMAX, VDD = 3.0V to 5.5V

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

VIN, VAS Inputs

VC(MAX),VOTF Voltage at VIN for 100% Duty

Cycle and Overtemp. Fault

VC(SPAN)

VAS

VC(MAX) - VC(MIN)

Auto-shutdown Threshold

VSHDN

VREL

VHYST

VHAS

Voltage Applied to VIN to

ensure Reset/Shutdown

Voltage Applied to VIN to

Release Reset Mode

Hysteresis on VSHDN, VREL

Hysteresis on Auto-shutdown

Comparator

Pulse Width Modulator

FOSC

PWM Frequency

Note 1: Ensured by design, not tested.

2.5

2.65

2.8

V

1.3

VC(MAX) ~

VC(SPAN)

—

VDD x 0.19

—

—

1.4

1.5

V

—

VC(MAX)

V

—

VDD x 0.13 V

—

—

V VDD = 5V,

See Figure 5-11

0.01 x VDD

—

V

70

—

mV

26

30

34

Hz CF = 1.0 µF

DS21446C-page 4

 2002 Microchip Technology Inc.

Share Link: