THMC45

5V AND 3.3V DC BRUSHLESS FAN MOTOR DRIVER

WITH SINGLE WIRE CONTROL

SLIS101A − MAY 2001

3

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

GND

4

I

Ground

H+

6

I

Hall sensor positive input

H−

7

I

Hall sensor negative input

OUTA

2

O

Motor winding drive output A

OUTB

3

O

Motor winding drive output B

PWM

8

I/O

PWM duty cycle control input and tachometer/locked rotor detect current sink output

TACH

5

O

Open drain tachometer output signal

VPWR

1

I

5-V Supply voltage input

6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 V

. . . . . . . . . . . . . .

350 mA

. . . . . . . . . . . . . . . . . . . .

260 mA

. . . . . . . . . . . . . . . . . . . .

2.1 W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−30

°C to 80°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−55

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

300

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. All voltage values are with respect to GND.

2. Assumed package plus PCB system thermal impedance = 170

°C/W, TA = 25°C.

3. Assumed package plus PCB system thermal impedance = 170

°C/W, TA = 80°C.

4. In free air at TA = 25°C, assumed 58.4°C/W and TJ = 150°C.

recommended operating conditions

MIN

MAX

UNIT

Supply voltage, VPWR

2.5

5

V

PWM high-level input voltage, VIH

2

V

PWM low-level input voltage, VIL

0.8

V

PWM input frequency, fPWM

18

50

kHz

Operating case temperature, TC

−30

80

°C