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MTD6505
Note: Unless indicated, T A = +25°C, V DD = 5.5V to 2.0V, OUT1, 2, 3 and PWM open.
6
5.5
5
4.5
60
50
4
3.5
3
2.5
40
30
V DD = 5.5V
2
V DD = 2V
20
1.5
1
V DD = 5.5V
10
V DD = 2V
0.5
0
0
-40 -25 -10
5 20 35 50 65 80 95 110 125
Temperature (C°)
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (C°)
FIGURE 2-7: Outputs R ON Low Side
Resistance vs. Temperature.
7
6
FIGURE 2-9:
Temperature.
0
-5
Stand-By Current vs.
5
4
3
2
1
0
V DD = 2V
V DD = 5.5V
-10
-15
-20
-25
-30
-35
-40
V DD = 2V
V DD = 5.5V
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (C°)
Temperature (C°)
FIGURE 2-8:
Temperature.
Supply Current vs.
FIGURE 2-10:
Temperature.
PWM Pull-Up Current vs.
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1 .
TABLE 3-1:
MTD6505 PIN FUNCTION TABLE
Pin
Number
1
2
3
4
5
6
7
8
9
Type
O
I
—
O
O
—
O
—
I
Name
FG
R PROG
V BIAS
OUT1
OUT2
GND
OUT3
V DD
DIR
Function
Motor speed indication output
Km parameter setting with external resistors, see Table 4-2 for values
Internal regulator output (for decoupling only)
Single phase coil output pin
Single phase coil output pin
Negative voltage supply (ground)
Single phase coil output pin
Positive voltage supply for motor driver
Motor Rotation Direction
- Forward direction: connect pin to GND or leave floating
- Reverse direction: connect pin to V BIAS
10
11
I
—
PWM
EP
PWM input signal for speed control
Exposed pad (can be connected to the ground plan for better thermal dissipation)
Legend: I = Input; O = Output
DS22281A-page 8
? 2011 Microchip Technology Inc.
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