ICs for Motor
■Overview
The AN6650 and the AN6650S are the electronic
governors suitable for a low-voltage and compact DC
motor which is used for a tape recorder, etc.
■Features
•
Wide range of operating voltage : VCC (opr) =1.8V ~ 7V
AN6650 : VCC (opr) =1.8V ~ 7V
AN6650S : VCC (opr) =1.8V ~ 3.6V
•
2 package types
•
Fewer external parts
•
Speed control in steps with linear fine control
AN6650, AN6650S
Motor Control Circuits
8-Lead DIP Package (DIP008-P-0300B)
Unit : mm
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
AN6650
9.4±0.3
0.51min.
8
7
6
5
4 1 2 3
658
7
GND GND
+
–
Start
Circuit
Ref.
Voltage
1kΩ
10kΩ
VCC
■Block Diagram
1
2
3
4
0.4±0.25
0.6±0.31.27
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 : mm
AN6650S
AN6650, AN6650S ICs for Motor
■ Pin Descriptions
Pin No.
Pin Name
1
2
3
4
VREF
VREF
VCC
Comparator Input
Pin No.
Pin Name
5
6
7
8
GND
GND
Motor Pin
Phase Compensation
–
+
■ Absolute Maximum Ratings (Ta= 25˚C)
VCC
Vn – 5, 6
ICC *
I7
PD
Topr
Tstg
Supply Voltage
Circuit Voltage
Circuit Voltage
Supply Current
Circuit Current
Power Dissipation
Operating Ambient
Temperature
Storage Temperature
V
V
V
mA
mA
mW
˚C
˚C
Parameter Symbol Rating Unit
7.5
4
1000
750
360
–20 ~ + 75
–20 ~ + 60
– 40 ~ +150
– 40 ~ +125
– 0.5
– 0.5
– 0.5
7.5
4
1
1000
* AN6650 : t ≤ 5µs, AN6650S : t ≤ 1µs
AN6650
AN6650S
AN6650
AN6650S
AN6650
AN6650S
AN6650
AN6650S
AN6650
AN6650S
Vn – 5, 6
(n = 1, 2, 3, 4)
■ Electrical Characteristics (Ta = 25˚C)
VCC = 3V,
VCC = 3V, V2–1>10kΩ
Supply voltage in which 30mA current flows to Ra
VCC = 1.8V, Ra = 4.7Ω
VCC = 1.8V ~ 7.0V
VCC = 1.8V ~ 3.6V
VCC = 1.8V ~ 7.0V
VCC = 1.8V ~ 3.6V
I7 = 1mA ~ 20mA
Ta = –20˚C ~ + 60˚C, VCC = 3.0V
Parameter Symbol Condition min. typ. max. Unit
2
1.28
1.0
0.2
0.1
0.1
0.01
0.01
Supply Current
Reference Voltage
Starting Voltage
Saturation Voltage
Voltage
Characteristics 1
Voltage
Characteristics 2
Current Characteristics
Temperature Current
Characteristics
ICC
Vref
VCC (S)
Vsat
mA
V
V
V
%/V
%/V
%/mA
%/˚C
1.20
–1.25
–1.2
– 0.2
3
1.35
1.2
0.5
1.25
1.2
0.2
∆V
ref
V
ref /∆VCC
∆Va
Va /∆VCC
∆V
ref
V
ref /∆I7
∆V
ref
V
ref /∆Ta
AN6650
AN6650S
AN6650
AN6650S
Note) Operating Supply Voltage Range : VCC (opr) = 1.8V ~ 3.6V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Ambient Temperature Ta (˚C)
Power Dissipation PD (W)
16060–20
PD – Ta
0.36
0 20 40 80 100 120 140
(1)
(2)
AN6650
AN6650S
In case of AN6650S
(1) Epoxy substrate mounted (55mm × 20mm × 0.7mm)
(2) Single unit
ICs for Motor AN6650, AN6650S
–
+
MAN6650
AN6650S
1µF
10V
0.1µF
3Ω0.4Ω
(3900ppm/˚C)
510Ω
VR
1kB
1000pF
9.1kΩ
(2000ppm/˚C)
Motor
Ra = 4Ω
■ Application Circuit
Speed Control Circuit with 3V Core Motor
Motor Constants
Ra : Internal resistor = 4Ω
Ka : Electromotive force constant = 0.4mV/rpm
KT : Torque constant = 30g · cm/A
VCC
8 7 6 5
1 2 3 4