MC33033 Motorola, MC33033 Datasheet - Page 10

• Manufacturer Part Number: MC33033
• Description: BRUSHLESS DC MOTOR CONTROLLER
• Manufacturer: Motorola

10
Foward/Reverse
60 /120 Select
Output Enable
R T
C T
Sensor Inputs
Reference Output
Error Amp Out
PWM Input
=
Noninv. Input
Sink Only
Positive True
Logic With
Hysteresis
Faster
V CC
S B
S C
S A
11
18
19
14
10
4
5
6
3
7
9
8
Error Amp
Reference
Regulator
20 k
Oscillator
40 k
Figure 18. Representative Block Diagram
PWM
20 k
40 k
20 k
40 k
8.9 V
4.5 V
Undervoltage
Shutdown
Thermal
MC33033
R
S
S
R
Decoder
Latch
Position
Latch
13
Rotor
Lockout
Q
Q
Gnd
I Limit
100 mV
MOTOROLA ANALOG IC DEVICE DATA
20
1
2
17
16
15
12
A T
B T
C T
Current Sense
A B
B B
C B
Input
Bottom
Drive
Outputs
V M
Top
Drive
Outputs