TC648VOA713 查看數據表（PDF） - Microchip Technology

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TC648VOA713

Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert

Microchip Technology 

TC648

VDD

VDD

VDD

Fan

Fan

Fan

RBASE

RBASE

VOUT

Q1

VOUT

Q1

VOUT

Q1

Q2

GND

a) Single Bipolar Transistor

GND

b) Darlington Transistor Pair

GND

C) N-Channel MOSFET

FIGURE 5-6:

Output Drive Transistor Circuit Topologies.

TABLE 5-1: TRANSISTORS AND MOSFETS FOR Q1 (VDD = 5V)

Device

Package

Max. VBE(sat)/VGS

(V)

Min. HFE

VCEO/VDS

(V)

Fan Current

(mA)

Suggested

RBASE (Ω)

MMBT2222A

SOT-23

1.2

50

40

150

800

MPS2222A

TO-92

1.2

50

40

150

800

MPS6602

TO-92

1.2

50

40

500

301

SI2302

SOT-23

2.5

NA

20

500

Note 1

MGSF1N02E

SOT-23

2.5

NA

20

500

Note 1

SI4410

SO-8

4.5

NA

30

1000

Note 1

SI2308

SOT-23

4.5

NA

60

500

Note 1

Note 1: A series gate resistor may be used in order to control the MOSFET turn-on and turn-off times.

 2002 Microchip Technology Inc.

DS21448C-page 13

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