Document
SEMICONDUCTOR
TECHNICAL DATA
KIA6903P
BIPOLAR LINEAR INTEGRATED CIRCUIT
DC MOTOR SPEED CONTROLLER FOR CASSETTE TAPE RECORDER SYSTEM
The KIA6903P is a monolithic IC developed for speed control of general purpose DC motors. This IC consist of a reference voltage generator, current multiplier, comparator and start circuit.
The IC controls the speed of a DC motor by detecting counter electromotive force from the DC motor.
FEATURES Wide Range of Working Power Supply Voltage. (VCC=3.5 18V) Very Large Starting Torque at the low Voltage. Large Allowable Loss due to Effective Utilization of Substrate Radiation. Usable for Various DC Motors by Means of Changing Constants of the External Components.
DW
G LH
dP A 85
14
B
TQ
DIM MILLIMETERS A 9.6+_ 0.2 B 6.45+_ 0.2 D 1.52+_ 0.1 d 0.46+_ 0.1 G 0.50 MIN H 3.8+_ 0.3 L 3.3+_ 0.3 P 2.54 T 0.25+0.1/-0.05 W 7.62 Q 0 - 15
APPLICATION Radio Cassette Tape Recorders
DIP-8
ABSOLUTE MAXIMUM RATINGS (Ta=25 )
PARAMETERS SYMBOL LIMITS UNIT CONDITIONS
Supply Voltage
VCC 18 V
-
Power Dissipation
PD 1.4* W PCB:9 . T=1.0
Note : Derated above Ta=25 in the proportion of 11.2mW/ .
BLOCK DIAGRAM
KIA6903P
1
8
20:1 + -
STARTER
27
36
VREF
45
2002. 7. 10
Revision No : 5
1/2
KIA6903P
ELECTRICAL CHARACTERISTICS (VCC=12V, Ta=25 )
CHARACTERISTICS
SYMBOL
TEST CIRCUIT
Bias Current
I4 Fig.1(d)
Output Saturation Voltage
Vsat Fig.1(c)
Reference Voltage
VREF
Fig.1(a)
Current Ratio
K Fig.1(b)
Reference Voltage VariancePower Supply Voltage Variance Current Ratio VariancePower Supply Voltage Variance
VREF / VREF
VCC
K K / VCC
Fig.1(a) Fig.1(b)
Reference Voltage VarianceMotor Current Variance Current Ratio VarianceMotor Current Variance
VREF / VREF
IM
K K / IM
Fig.1(a) Fig.1(b)
Reference Voltage VarianceAmbient Temperature Variance Current Ratio VarianceAmbient Temperature Variance
VREF / VREF
Ta
K
/ K
Ta
Fig.1(a) Fig.1(b)
TEST CONDITION RM=180 VIN=4.2V, RM=4.4 IM=10mA RM1=44 , RM2=33 IM=100mA, VCC=6.3 18V
IM=100mA, VCC=6.3 18V
IM=30 200mA
IM=30 200mA
IM=100mA, Ta=-25 75
IM=100mA, Ta=-25 75
MIN. TYP. MAX. UNIT
0.5 0.8 1.2 - 1.5 2.0 1.10 1.27 1.40 18 20 22
mA V V -
- 0.06 - %/V
- 0.4 - %/V
- -0.02 - %/mA
- -0.02 - %/mA
- 0.01 - %/
- 0.01 - %/
TEST CIRCUIT
390Ω
RM
V 4 VREF
KIA6903P 5
1(2)
8
VCC IM
(a)
VCC
A1 I 4 '
VCC A2 IM
4
KIA6903P 5
1(2)
8
(b)
K=
I M (SW 2 ) _ I M (SW 1 ) I 4 ' (SW 2 ) _ I 4 ' (SW 1 )
A1 I 4 '
VCC A2 I M
4.4Ω
390Ω 180Ω
4
KIA6903P 5
1(2)
8
V V(sat)
(c)
4
KIA6903P 5
1(2)
8
(d)
I4 =
I4 '
_
IM K
Fig.1
390Ω RM1 R M2
RT 75Ω
APPLICATION CIRCUIT
(RT < RM x 20)
RS 1kΩ Rev adjust
M RM 4Ω
87
6
KIA6903P
5
VCC
20:1 + VREF
STARTER
1234
* 1 , 2 , 3 , 6 , 7 Pin must be connected with GND
2002. 7. 10
Revision No : 5
2/2
.