TC646 Просмотр технического описания (PDF) - Microchip Technology

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Компоненты Описание

производитель

TC646

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

Microchip Technology 

TC646

+5V

Analog or Digital

Temperature

Data from one or

more Sensors

Open-Drain

Outputs

I/O0 (RESET) (Optional)

R1

I/O1 (MSB) 110 kΩ

R2

CB

CMOS I/O2

Outputs

240 kΩ

R3

360 kΩ

I/O3

(LSB)

CMOS

Microcontroller

R5

1.5 kΩ

+5V

.01 µF

R7

R4 33 kΩ

18 kΩ

+5V R8

18 kΩ

R6

1 kΩ

+12V

+5V

Fan

1 VIN

VDD 8

2 CF

+

VOUT 7

1 µF TC646

3 VAS

CB

.01 µF

4 GND

6

FAULT

5

SENSE

+ CB

1 µF R9

800Ω

+5V

R10

10 kΩ

2N2222A

0.1 µF

R11

2.2Ω

GND

INT

FIGURE 5-10:

TC646 as a Microcontroller Peripheral.

1.0

VDD = 5.5V

0.9

VDD = 5.0V

0.8

VRELEASE vs. Temperature

0.7

VDD = 4.0V

0.6

0.5

VDD = 3.0V

0.4

0˚C

25˚C

85˚C

TEMPERATURE

FIGURE 5-11:

VRELEASE vs. Temperature.

 2002 Microchip Technology Inc.

DS21446C-page 17

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