MTD6505

DS22281A-page 8

 2011 Microchip Technology Inc.

FIGURE 2-7:

Resistance vs. Temperature.

FIGURE 2-8:

Supply Current vs.

Temperature.

FIGURE 2-9:

Stand-By Current vs.

Temperature.

FIGURE 2-10:

PWM Pull-Up Current vs.

Temperature.

3.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

2

2.5

3

3.5

4

4.5

5

5.5

6

V

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

-40 -25 -10

5

20 35 50 65 80 95 110 125

Temperature (C°)

V

V

2

3

4

5

6

7

V

V

0

1

2

3

4

5

6

7

-40 -25 -10

5

20 35 50 65 80 95 110 125

Temperature (C°)

V

V

20

30

40

50

60

V

0

10

20

30

40

50

60

-40 -25 -10

5

20 35 50 65 80 95 110 125

Temperature (C°)

V

V

-30

-25

-20

-15

-10

-5

0

V

-40

-35

-30

-25

-20

-15

-10

-5

0

-40 -25 -10

5

20 35 50 65 80 95 110 125

Temperature (C°)

V

V

TABLE 3-1:

MTD6505 PIN FUNCTION TABLE

Pin

Number

Type

Name

Function

1

O

FG

Motor speed indication output

2I

Km parameter setting with external resistors, see Table 4-2 for values

3—

Internal regulator output (for decoupling only)

4

O

OUT1

Single phase coil output pin

5

O

OUT2

Single phase coil output pin

6

—

GND

Negative voltage supply (ground)

7

O

OUT3

Single phase coil output pin

8—

Positive voltage supply for motor driver

9

I

DIR

Motor Rotation Direction

- Forward direction: connect pin to GND or leave floating

10

I

PWM

PWM input signal for speed control

11

—

EP

Exposed pad (can be connected to the ground plan for better thermal dissipation)

Legend: I = Input; O = Output