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Motor Control Circuit (Preliminary)
Description
The SE6651 is an IC designed for the rotating speed control of a compact DC motor, which is used for tape recorder, record player, etc.
SE6651
Feature
Small four-lead plastic package for compact motor. Fewer external parts. Stable low reference voltage (1.0V typical), wide motor speed setting. Highly stable operation over a wide range of
Pin Configuration
TOP-VIEW
supply voltage and torque supply voltage, VCC = 3.5V - 14.4V. Built-in reverse voltage protection.
TO-126B
Typical Application
VCC 22uH
Pin Description
RT = 180 Ohm Micro Motor RS
EA
M
RA
10uF
Pin No. 1 2 3 4
Pin Name VCC
2
Control Pin GND Motor Pin
1
SE6651
4 Motor Constant KA: Electromotive force constant = 1.1 mV/rpm RA: Internal Resistor = 5 Ohm KT: Torque constant = 100 g-cm/A
3
Block Diagram
2
VREF Vcc 1
COM
40
4
3
GND
Revision 12/4/2008 All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 1
Motor Control Circuit (Preliminary)
Absolute Maximum Rating
Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC ICC
2
SE6651
Maximum 14.4 2000 1300 -20 ~ +75 -40 ~ +150
Unit V mA mW C C
PD1 TA TSTG
Electrical Characteristics
Parameter Reference Voltage Bias Current Current Proportional Constance Line Regulation Symbol VREF IBIAS K
VREF VREF
Condition VCC = 6V, RA = 1K VCC = 6V VCC = 6V, DI4 = 40mA VCC = 3.5V ~ 14V, RA = 1K
Min 1 0.425 40.96
Typ. 1.02 0.484 41.53
Max 1.04 0.543 42.09
Unit V mA
/ VCC
0.1
0.13
0.16
%/V
Load Regulation
VREF VREF VSAT
K K
/ I4
I4 = 50mA ~ 200mA VCC = 4.2V, RA = 5.0 VCC = 3.5V ~ 14V, DI4 = 40mA I4 = 50mA ~ 200mA TA = -20C ~ 75C, VCC = 6V, RA = 1K TA = -20C ~ 75C, DI4 = 40mA
0.038 1.46 0.61
0.04 1.54 0.68
0.043 1.63 0.75
%/mA V %/V
Saturation Voltage Voltage Characteristics
/ VCC / I4 / TA
Current Characteristics Temperature Characteristics Temperature Characteristics
K K
-0.0046
-0.008
-0.0123
%/mA
VREF VREF K K
0.05
%/C
/ TA
0.001
%/C
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 2
Motor Control Circuit (Preliminary)
Outline Drawing for TO-126B
DIMENSIONS INCHES MIN
0.312 0.196 0.156 0.432 0.076 0.116 0.046 0.560 0.024 0.071 0.066 0.124 0.019 0.028 0.024 0.128 0.122 3 4
SE6651
DIM
Q1 Q2 P3 C D A
N
MM MIN
7.800 4.900 3.900
MAX
0.328 0.204 0.164 0.448 0.084 0.124 0.054 0.640 0.024 0.071 0.070 0.132 0.021 0.028 0.024 0.128 0.122
MAX
8.200 5.100 4.100 11.200 2.100 3.100 1.355 16.000 0.600 1.778 1.750 3.300 0.515 0.700 0.600 3.200 3.050 3 4
B E P2 F
L
P1
G
N1 N2
N2
N1
H I I I J J J
I M K
A B C D E F G H I J K L M N1 N2 P1 P2 Q1 Q2
10.800 1.900 2.900 1.155 14.000 0.600 1.778 1.650 3.100 0.485 0.700 0.600 3.200 3.050
TO-126B
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 3
Motor Control Circuit (Preliminary)
SE6651
Customer Support
Seaward Electronics Incorporated - China Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Seaward Electronics Corporation - Taiwan 2F, #181, Sec. 3, Minquan East Rd, Taipei, Taiwan R.O.C Tel: 886-2-2712-0307 Fax: 886-2-2712-0191 Seaward Electronics Incorporated - North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 12/4/2008
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 4

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