THMC40, THMC41

VARIABLE SPEED 12-VDC BRUSHLESS FAN MOTOR DRIVERS

SLIS097 – MARCH 2000

3

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

AGND

9

I

IC analog ground and substrate connection

CP

3

I

External charge pump capacitor

COSC

1

I/O

External oscillator capacitor

H–

12

I

Hall sensor negative input

H+

13

I

Hall sensor positive input

NC

6, 8

–

No connection

PGND

7

I

Power ground for high-side charge pump

PHA

11

O

Low-side driver for phase A motor winding

PHB

10

O

Low-side driver for phase B motor winding

RD

2

O

Open-drain locked rotor detection output—THMC41 only

TACH

2

O

Open-drain tachometer output signal—THMC40 only

VOUT

5

O

High-side PWM driver output for motor windings

VPWR

4

I

Supply voltage input

VPWM

14

I

PWM duty cycle control voltage input

(see Note 1)

18 V

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

18 V

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

40 V

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

7 V

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

7 V

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

7 V

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

7 V

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

30 V

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

1.5 A

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

1.5 A

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

26.9

°C/W

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

122.3

°C/W

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

Continuous power dissipation at 25

1022 mW

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

Power derating factor above 25

8.18 mW/

°C

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

–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. JEDEC low-K board with 0 LFM airflow

3. 150

°C maximum junction temperature, JEDEC low-K board with 0 LFM airflow

4. 80

°C maximum ambient and 150°C maximum junction temperature