PANASONIC AN6612S

ICs for Motor
AN6612, AN6612S
Motor Control Circuits
■ Overview
AN6612
8
2
7
3
6
4
2.54
■ Features
• Wide range of operating voltage : VCC (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
1
0.5±0.1
1.2±0.25
Unit : mm
9.4±0.3
The AN6612 and the AN6612S are the electronic governor circuits suitable for the rotating speed control of a
low voltage and compact DC motor which is used for a
small tape recorder, etc.
5
0.51min.
6.3±0.3
3.8±0.25
7.62±0.25
3 ~ 15˚
(3.45)
+ 0.1
0.05
0.15 –
8-Lead DIP Package (DIP008-P-0300B)
AN6612S
8
2
7
3
6
4
5
0.3
4.2±0.3
6.5±0.3
0.15
0.65
0.1±0.1
1.5±0.2
1
5.0±0.3
0.4±0.25
1.27
0.6±0.3
Unit : mm
8-Lead SOP Package (SOP008-P-0225A)
■ Block Diagram
VM
VO
VB
GND
8
7
6
5
10kΩ
R9
1kΩ
R10
+
Comparator
Start
Circuit
–
Ref.Voltage
1
VRM
2
3
4
VRP
VI
VCC
ICs for Motor
AN6612, AN6612S
■ Pin Descriptions
Pin No.
Pin Name
Pin No.
Pin Name
1
Current Sensor
5
GND
2
Reference Voltage
6
Base
3
Control
7
Output Base
4
VCC
8
Motor pin
■ Absolute Maximum Ratings (Ta= 25˚C)
Parameter
Symbol
Rating
Supply Voltage
VCC
10
V
Supply Current
I4
5
mA
AN6612
Power Dissipation
AN6612
–20 ~ + 75
˚C
–40 ~ +150
Tstg
AN6612S
mW
200
Topr
Operating Ambient Temperature
Storage Temperature
400
PD
AN6612S
Unit
˚C
–40 ~ +125
■ Electrical Characteristics (Ta = 25˚C)
Parameter
Symbol
Supply Current
I4
Reference Voltage
Starting Current
Voltage Variable Characteristics for
Rotating Speed
Time Drift Characteristics for Rotating
Speed
Temperature Variation
Characteristics for Rotating Speed
Output Current Limit Voltage
Condition
min.
V2– 1
VCC = 3V, R2–1 = 10kΩ
1.24
Ia
VCC = 1.8V, Ra = 4.9Ω
VCC = 1.8V ~ 4V,
IL = 72mA (1.7g · cm)
VCC = 3V, IL = 72mA,
t = 15s ~ 10min.
VCC = 3V, IL = 72mA,
Ta = –20˚C ~ + 60˚C
VCC = 3V
250
|∆NV|
|∆NT|
∆NA *
Vt (1 – 5)
typ.
max.
1.9
3
1.32
1.40
VCC = 3V
Unit
mA
V
mA
10
rpm/V
0.1
%
– 0.035
%/˚C
0.7
0.6
0.8
V
* In case that only IC temperature is changed.
■ Application Circuit
0.5Ω
Motor
M
10Ω
1
VR3kB
910Ω
2SA881A
2
1kΩ
10kΩ
3
–
+
5
AN6612
AN6612S
6
7
VR500ΩB
4
8
+
0.47µF
–
2.2µF
–VCC
+VCC
Motor Constants
Ra : Internal resistor = 4.9Ω
Ka : Electromotive force constant = 0.4mV/rpm
KT : Torque constant = 29g · cm/A