MC33039DG ON Semiconductor, MC33039DG Datasheet - Page 3

• Manufacturer Part Number: MC33039DG
• Description: IC ADAPTER MOTOR BRUSHLESS 8SOIC
• Manufacturer: ON Semiconductor
• Type: Brushless DC Motor Controllerr

Specifications of MC33039DG

• Applications: DC Motor Controller, Brushless (BLDC)
• Number Of Outputs: 1
• Current - Output: 20mA
• Voltage - Supply: 5.5 V ~ 9 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Operating Supply Voltage: 5.5 V to 9 V
• Supply Current: 5 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MC33039DGOS

implementing closed−loop speed control of brushless DC
motors by eliminating the need for a magnetic or optical
tachometer. Shown in the timing diagram of Figure 1, the
three inputs (Pins 1, 2, 3) monitor the brushless motor rotor
position sensors. Each sensor signal transition is digitally
detected, ORied at the Latch iSeti Input, and causes C
discharge. A corresponding output pulse is generated at f
(Pin 5) of a defined amplitude, and programmable width
determined by the values selected for R
average voltage of the output pulse train increases with
motor speed. When fed through a low pass filter or
integrator, a DC voltage proportional to speed is generated.
Figure 2 shows the proper connections for a typical closed
The MC33039 provides an economical method of
60° Sensor
Electrical
Phasing
Input
120° Sensor
Electrical
Phasing
Input
φ
Latch ISetI Input
R
f
out
A
T
/C
Output
Output
T
φ
φ
φ
φ
φ
φ
B
C
A
B
C
A
0
Figure 1. Typical Three Phase, Six Step Motor Application
60
T
and C
120
Constant Motor Speed
OPERATING DESCRIPTION
T
Rotor Electrical Position (Degrees)
(Pin 6). The
MC33039, NCV33039
180
http://onsemi.com
T
240
out
to
3
300
loop application using the MC33035 brushless motor
controller. Constant speed operation down to 100 RPM is
possible with economical three phase four pole motors.
controller and motor sensor phasing conventions are not
compatible. A method of converting from either convention
to the other is shown in Figure 3. For a more detailed
explanation of this subject, refer to the text above Figure 39
on the MC33035 data sheet.
temperature and controlled by the supply voltage on V
(Pin 8). Operation down to 5.5 V is guaranteed over
temperature. For systems without a regulated power supply,
an internal 8.25 V shunt regulator is provided.
The φ
The output pulse amplitude V
360
A
inverter output (Pin 4) is used in systems where the
Increasing Motor
480
Speed
600
720
V
V
th
out
OH
≈ 0.67 V
(AVG)
is constant with
CC
CC