UTC6650
LINEAR INTEGRATED CIRCUIT
YOUW ANG ELECTRONICS CO.LTD
1
MOTOR SPEED CONTROL
CIRCUIT
DESCRIPTION
The UTC6650 is a monolithic integrated circuit designed for
the tape recorder.
FEATURES
*Wide operating supply voltage:Vcc=1.8V- 7V
*Few external components
*Easy Speed control mode
DIP-8
BLOCK DIAGRAM
Reference
Voltage
Start
circuit
2
1
4
3
6
5
8
7
VREF-
VREF+
VCC
GND
GND
PHASE
MOTOR
COMP.
INPUT
10k
1k
UTC6650
LINEAR INTEGRATED CIRCUIT
YOUW ANG ELECTRONICS CO.LTD
2
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C)
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
7.5
V
Terminal Voltage
Vn(n=1,2,3,4)
-0.5~7.5
V
Terminal 8 Voltage
V
8
-0.5~1
V
Supply Current
Icc
1000
mA
Terminal 7 Current
I
7
1000
mA
Power Dissipation
P
D
750
mW
Operating Temperature
Topr
-20
+70
C
Storage Temperature
Tstg
-40
+150
C
ELECTRICAL CHARACTERISTICS
(Ta=25
C
,V
CC
=6V,f=1kHz,unless otherwise specified)
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Units
Test
circuit
Quiescent Circuit Current
I
CC
V
CC
=3V
2
3
mA
1
Reference Voltage
V
REF
V
CC
=3V
R2-1>10k
1.20
1.28
1.35
V
4
Start Voltage
V
CC(S)
30mA current flow to Ra
1.0
1.2
V
2
Saturation Voltage
V
SAT
V
CC
=1.8V,Ra=4.7
0.2
0.5
V
2
Reference Voltage
Characteristics
VREF
VREF
VCC
V
CC
=1.8V~7.0V
-1.25
0.1
1.25
%/V
1
Output Voltage
Characteristics
VA
VA
VCC
V
CC
=1.8V~7.0V
-1.2
0.1
1.2
%/V
3
Reference Voltage Current
Characteristics
VREF
VREF
I7
I
7
=1mA~20mA
-0.2
0.01
0.2
%/mA
4
Reference Voltage
Temperature Characteristics
VREF
VREF
TA
T
A
=-20~+60
C V
CC
=3.0V
0.01
%/
C
4
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