TDA1154 データシートの表示（PDF） - STMicroelectronics
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TDA1154 Datasheet PDF : 6 Pages
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TDA1154
ELECTRICAL CHARACTERISTICS Tamb = +25 °C (Unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ.
V(ref)
Reference voltage
VCC = +6V I(8) = 0.1A
1.15 1.25
∆ V(ref)
V(ref)
/
∆
T
Reference voltage
temperature coefficient
VCC = +6V I(8) = 0.1A
Tamb = -20°C to +70°C
-
0.02
∆ V(ref)
V(ref)
/
∆
VCC
Line regulator
VCC = +4V to +18V
I(8) = 0.1A
-
0.02
∆ V(ref)
V(ref)
/
∆
| (8)
Load regulator
VCC = +6V
l(8) = 25 to 400 mA
-
0.009
V (5 - 3)
Minimum supply voltage
| (8) = 0.1A ∆ V(ref) = −5%
2.5
-
V(ref)
I(8)
Starting current(*)
∆ V(ref)
V(ref)
=
−50%
VCC = +5V
1.2
-
VCC = +2.5V
0.5
0.8
IO (5)
Quiescent current on pin 5
VCC = +6V I(8) = 100 µA
-
1.7
K
K
=
∆
∆
|
|
(8)
(5)
reflection
coefficient
VCC = +6V I(8) = 0.1A
18
20
Max.
1.35
-
-
-
-
-
-
-
22
Unit
V
%/°C
%/V
%/mA
V
A
mA
∆K
K
/
∆
VCC
K spread versus VCC
VCC = +6V to +18V
I(8) = 0.1A
-
0.45
-
∆K
K
/
∆
|
(8)
K spread versus I(8)
VCC = +6V
I(8) = 25 to 400 mA
-
0.005
-
∆K
K
/
∆
T
K spread versus temperature VCC = +6V I(8) = 0.1A
Tamb = +20°C to +70°C
-
0.02
-
(*) An internal protection circuit reduces the current if the temperature of the junction increase: I(8) = 0.75A at Tj = +140 °C
%/V
%/mA
%/°C
OPERATING MODE
Figure 3
The circuit maintains a 1.2V costant reference volt-
age between pins 5 and 8:
V(5 - 8) = V(ref) = 1.2V
The current (I(5)) drawn by the circuit at pin 5 is
sum of two currents.
One is constant: IO(5) = 1.7mA and the other is
proportional to pin 8 current (I(8)):
I(5) = IO(5) +I(8)K(a) (IO(5) = 1.7mA, K = 20)
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