ICs for Motor
n Overview
The AN6612 and the AN6612S are the electronic gov-
ernor circuits suitable for the rotating speed control of a
low voltage and compact DC motor which is used for a
small tape recorder, etc.
n Features
• Wide range of operating voltage : V
CC (opr)
=1.8V ~ 8V
• 2 package types
• Fewer external parts
• Speed control in steps with linear fine control
• Output current limiting circuit is built-in
AN6612, AN6612S
Motor Control Circuits
1
2
3
4
6.3– 0.3
3.8– 0.25 (3.45)
2.54
1.2
–
0.25
0.5
–
0.1
7.62– 0.25
3 ~ 15˚
0.15
+ 0.1
– 0.05
9.4
–
0.3
0.51min.
8
7
6
5
8-Lead DIP Package (DIP008-P-0300B)
Unit : mmAN6612
8 7 6 5
1 2 3 4
Comparator
+
–
1kΩ
10kΩ
R9
R10
Ref.Voltage
Start
Circuit
VM VO VB GND
VRM VRP VI VCC
n Block Diagram
1
2
3
4
0.4
–
0.25
0.6
–
0.3
1.27
0.1
–
0.1
0.3
0.15 0.65
1.5
–
0.2
5.0
–
0.3
4.2– 0.3
6.5– 0.3
8
7
6
5
8-Lead SOP Package (SOP008-P-0225A)
Unit : mmAN6612S