BCD AM6651B Motor control circuit Datasheet

Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
General Description
Features
The AM6651B is a monolithic integrated circuit that
provides motor speed control, reverse voltage protection, and stable reference voltage. This IC is specially
designed for tape recorder and recorder player.
·
·
·
·
·
Small 4-lead Plastic Package for Compact Motor
Few External Components
Stable Low Reference Voltage (1.0V, Typ)
Wide Motor Speed Control
Highly Stable Operation over a Wide Range of
Supply Voltage, VCC=3.5V to 14.4V
·
Reverse Voltage Protection Circuit Built-in
The AM6651B is available in plastic TO-126B package.
Applications
·
·
Tape Recorder
Recorder Player
TO-126B
Figure 1. Package Type of AM6651B
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Pin Configuration
U Package
(TO-126B)
4
3
OUT
GND
2
CON
1
VCC
Figure 2. Pin Configuration of AM6651B (Top View)
Pin Description
Pin Number
Pin Name
Function
1
VCC
Supply voltage
2
CON
Control pin
3
GND
Ground
4
OUT
Output
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Functional Block Diagram
CON
2
VREF
4
VCC
OUT
1
COM
3
GND
Figure 3. Functional Block Diagram of AM6651B
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Ordering Information
AM6651B
-
Circuit Type
E1: Lead Free
Blank: Tin Lead
Package
U: TO-126B
Blank: Tube
Part Number
Marking ID
Package
Temperature
Range
Tin Lead
Lead Free
Tin Lead
Lead Free
TO-126B
0 to 70 ℃
AM6651BU
AM6651BU-E1
AM6651BU
AM6651BU-E1
Packing Type
Tube
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Supply Voltage
VCC
16
V
Supply Current
ICC
500 (Note 2)
mA
Power Dissipation
PD
1300
mW
TSTG
-40 to 150
℃
Storage Temperature Range
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Note 2: The transient startup/shutdown current is allowed to exceed 1.0A.
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Temperature
Symbol
Min
Max
Unit
VCC
3.5
14.4
V
TA
0
70
℃
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Electrical Characteristics
(VCC=6V, TA=25oC, unless otherwise specified.)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
0.90
1.0
1.10
V
0.9
1.8
mA
Reference Voltage
VREF
VCC=6V, RA=1kΩ
(Figure 6)
Bias Current
IBIAS
VCC=6V (Figure 5)
Current Coefficient
K
VCC=6V, ∆I4=40mA
(Figure 4) (Note 3)
Saturation Voltage
VSAT
VCC=4.2V, RA=5Ω
1.06
35
45
2
V
Voltage Characteristic of
Reference Voltage
(∆VREF/VREF)/
∆VCC
VCC=3.5 to 14V,
RA=1kΩ
-0.02
%/V
Voltage Characteristic of
Current Coefficient
(∆K/K)/∆VCC
VCC=3.5 to 14V,
∆I4=40mA
0.39
%/V
Current Characteristic of
Reference Voltage
(∆VREF/VREF)/∆I4
I4=50 to 200mA
-0.06
%/mA
Current Characteristic of
Current Coefficient
(∆K/K)/∆I4
I4=50 to 200mA
-0.01
%/mA
Temperature Characteristic of Reference Voltage
(∆VREF/VREF)/∆TA
0.01
%/ ℃
Temperature Characteristic of Current Coefficient
(∆K/K)/∆TA
0.01
%/ ℃
VCC=6V, RA=1kΩ
TA=0 to 70 ℃
VCC=6V, ∆I4=40mA
TA=0 to 70 ℃
Note 3: I4 is the motor driver current, please see Figures 4 and 5.
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Test Circuits
VCC
VCC
I2
I4
I2
2
1 AM
I4
1 AM
6651B
4
6651B
3
RT
180Ω
2
RA
1kΩ
4
3
Figure 4. Test Circuit 1 (K = ∆I4/∆I2)
Figure 5. Test Circuit 2 (IBIAS=I2-I4/K)
VCC
VREF
RT
200Ω
RA
V
RS
240Ω
2
1
AM
6651B
4
3
V
VSAT
Figure 6. Test Circuit 3
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Typical Application
22µH
RT
180Ω
VCC
M
Motor (6V DC Motor) constants
KA: Electromotive force constant
= 1.1mV/rpm
RA: Internal resistor = 5Ω
KT: Torque constant = 100g.cm/A
10µF
RS
R
2
1
AM
6651B
4
3
Figure 7. Typical Application of AM6651B
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
MOTOR CONTROL CIRCUIT
AM6651B
Mechanical Dimensions
TO-126B
3.000(0.118)
3.400(0.134)
3.700(0.146)
3.900(0.154)
7.800(0.307)
8.200(0.323)
10.800(0.425)
11.200(0.441)
Unit: mm(inch)
1.500(0.059)
1.900(0.075)
φ2.900(0.114)
3.100(0.122)
0.600(0.024)
0.800(0.031)
0.900(0.035)
1.100(0.043)
1.717(0.068)
1.917(0.075)
15.300(0.602)
15.700(0.618)
0.600(0.024)
0.800(0.031)
0.500(0.020)
0.700(0.028)
1.778(0.070) TYP
5.234(0.206)
5.434(0.214)
Mar. 2007 Rev. 1. 3
0.450(0.018)
0.600(0.024)
BCD Semiconductor Manufacturing Limited
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