AN6612, AN6612S
ICs for Motor
s Pin Descriptions
Pin No.
Pin Name
1 Current Sensor
2 Reference Voltage
3 Control
4 VCC
Pin No.
Pin Name
5 GND
6 Base
7 Output Base
8 Motor pin
s Absolute Maximum Ratings (Ta= 25˚C)
Parameter
Symbol
Rating
Unit
Supply Voltage
VCC
10
V
Supply Current
I4
5
mA
AN6612
Power Dissipation
PD
AN6612S
400
mW
200
Operating Ambient Temperature
Topr
–20 ~ + 75
˚C
AN6612
–40 ~ +150
Storage Temperature
Tstg
˚C
AN6612S
–40 ~ +125
s Electrical Characteristics (Ta = 25˚C)
Parameter
Symbol
Supply Current
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
I4
V2– 1
Ia
|∆NV|
|∆NT|
∆NA *
Vt (1 – 5)
* In case that only IC temperature is changed.
Condition
VCC = 3V
VCC = 3V, R2–1 = 10kΩ
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
min.
1.24
250
typ.
1.9
1.32
max.
3
1.40
Unit
mA
V
mA
10 rpm/V
0.1
%
– 0.035
0.6
0.7
%/˚C
0.8
V
s Application Circuit
0.5Ω
10Ω
Motor
M
910Ω
1kΩ
VR500ΩB
–+
2.2µF
VR3kB
10kΩ
1
5
2 AN6612 6
2SA881A
3 AN6612S 7 +
4
8–
0.47µF
–VCC
+VCC
Motor Constants
Ra : Internal resistor = 4.9Ω
Ka : Electromotive force constant = 0.4mV/rpm
KT : Torque constant = 29g · cm/A