Panasonic AN6612S, AN6612 Datasheet

ICs for Motor

■ Overview

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.

■ 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 : mm

AN6612

■ 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

AN6612S

V

M

8 7 6 5

10kΩ
R

9

1kΩ

R

10

+
Comparator
–

Ref.Voltage

1 2 3 4

V

RM

V

O

V

RP

V

B

Start
Circuit

V

I

GND

V

CC

ICs for Motor

AN6612, AN6612S

Pin No.

Pin Name
1
2
3
4

Current Sensor
Reference Voltage
Control
V

CC

■ Pin Descriptions

Pin No.

Pin Name
5
6
7
8

GND
Base
Output Base
Motor pin

■ Absolute Maximum Ratings (Ta= 25˚C)

V

CC

I

4

P

D

T

opr

T

stg

Supply Voltage
Supply Current

Power Dissipation

Operating Ambient Temperature

Storage Temperature

V

mA

mW

˚C

˚C

Parameter Symbol Rating Unit

10

5
400
200

–20 ~ + 75
–40 ~ +150
–40 ~ +125

AN6612
AN6612S

AN6612
AN6612S

■ Electrical Characteristics (Ta = 25˚C)

V

CC

= 3V

V

CC

= 3V, R

2–1

= 10kΩ

V

CC

= 1.8V, Ra = 4.9Ω

Parameter Symbol Condition min. typ. max. Unit

1.9

1.32

0.1

– 0.035

0.7

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

I

4

V

2– 1

I

a

|∆NV|

|∆N

T

|

∆N

A

*

V

t (1 – 5)

mA

V

mA

rpm/V

%

%/˚C

V

1.24
250

3

1.40

10

0.8

*

In case that only IC temperature is changed.

V

CC

= 1.8V ~ 4V,

I

L

= 72mA (1.7g · cm)

V

CC

= 3V, IL = 72mA,

t

= 15s ~ 10min.

V

CC

= 3V, IL = 72mA,

Ta

= –20˚C ~ + 60˚C

V

CC

= 3V

0.6

1

2

3

4

5

6

7

8

AN6612

AN6612S

– +

–

+

M

2.2µF

10Ω

910Ω

1kΩ 10kΩ

–V

CC

+V

CC

0.47µF

2SA881A

Motor

VR3kB

VR500ΩB

0.5Ω

Motor Constants

Ra : Internal resistor = 4.9Ω
Ka : Electromotive force constant = 0.4mV/rpm
KT : Torque constant = 29g · cm/A

■ Application Circuit