tda1151, elektronika schematy, noty aplikacyjne
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TDA1151
MOTOR SPEED REGULATOR
EXCELLENT VERSATILITY IN USE
HIGH OUTPUT CURRENT (UP TO 800mA)
LOW QUIESCENT CURRENT (1.7mA)
LOW REFERENCE VOLTAGE (1.2V)
EXCELLENT PARAMETERS STABILITY
VERSUS TEMPERATURE
SOT-32
DESCRIPTION
The TDA1151 is a monolithic integrated circuit in
SOT-32 plastic package. It is intended for use as
speed regulator for DC motors of record players,
tape and cassette recorders, movie cameras, toys
etc.
ORDERING NUMBER
: TDA1151
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
s
Supply voltage
20
V
P
tot
Total power dissipation at T
amb
=70
°
C
0.8
W
at T
case
= 100
°
C
5
W
T
stg
,T
j
Storage and junction temperature
-40 to 150
C
APPLICATION CIRCUIT
March 1993
1/8
°
TDA1151
CONNECTION DIAGRAM
TEST CIRCUIT
2/8
TDA1151
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th j-case
Thermal resistance junction-case
max
10
°
C/W
R
th j-amb
Thermal resistance junction-ambient
max
100
°
C/W
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit, T
amb
=25
°
C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
V
ref
Reference voltage
(between pins 1 and 2)
V
s
=6V
I
M
= 0.1A
1.1
1.2
1.3
V
I
d
Quiescent drain current
V
s
=6V
I
M
= 100
m
A
1.7
mA
I
MS
Starting current
V
s
=5V
D
V
ref
/V
ref
= -50%
0.8
A
V
1-3
Minimum supply voltage
I
m
= 0.1 A
D
V
ref
/V
ref
= -5%
2.5
V
K=I
m
/I’
T
Reflection coefficient
V
s
=6V
I
M
= 0.1A
18
20
22
D
K
K
/D
V
s
V
s
= 6V to 18V I
m
= 0.1A
0.45
%/V
D
K
K
/D
I
M
V
s
=6V
I
m
= 25 to 400 mA
0.005
%/mA
D
K
K
/D
T
V
s
=6V I
m
= 0.1A
T
amb
= -20 to 70
0.02
%/
°
C
°
C
D
V
ref
V
ref
/D
V
s
Line regulation
V
s
= 6V to 18V I
M
= 0.1A
0.02
%/V
D
V
ref
V
ref
/D
I
M
Load regulation
V
s
=6V
I
m
= 25 to 400 mA
0.009
%/mA
D
V
ref
V
ref
/D
T
Temperature coefficient
V
s
=6V I
m
= 0.1A
T
amb
= -20 to 70
0.02
%/
°
C
°
C
3/8
TDA1151
Figure 1. Quiescent drain
current vs. power supply
Figure 2. Quiescent drain
current vs. ambient tem-
perature
Figure 3. Reference voltage
vs. supply voltage
Figure 4. Reference voltage
vs. motor current
Figure 5. Reference voltage
vs. ambient temperature
Figure 6. Reflection coef-
ficient vs. supply voltage
Figure7. Reflection coef-
ficient vs. motor current
Figure 8. Reflection coef-
ficient vs. ambient tem-
perature
Figure 9. Typical minimum
supply voltage vs. motor
current
4/8
TDA1151
Figure 10. Application circuit
V
s
= +9V
R
M
= 14.2
W
R
T
=280
W
R
S
=1k
W
E
g
= 2.9V
I
M
= 150 mA
V
M
=R
M
Note: A ceramic capacitor of 10 nF between pins, 1 and 2 improves stability in some applications.
Figure 11. P.C. board and component layout of the circuit of Fig. 10 (1 : 1 scale)
5/8
•
I
M
+E
g
= 5.03V
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