TL430 Datasheet, PDF (3/6 Pages) Texas Instruments – ADJUSTABLE SHUNT REGULATORS

TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050B – JUNE 1976 – REVISED JULY 1999
electrical characteristics over recommended operating conditions, T_A = 25°C (unless otherwise
noted)
PARAMETER
TEST
FIGURE
TEST CONDITIONS
TL430Y
UNIT
MIN TYP MAX
VI(ref) Reference input voltage
II(ref) Reference input current
1
VZ = VI(ref),
2
IZ = 10 mA,
R2 = ∞
IZ = 10 mA
R1 = 10 kΩ,
2.5 2.75
3
3V
10 µA
IZK
Regulator current near lower knee of
regulation range
1
VZ = VI(ref)
0.5
2 mA
Regulator current at maximum limit of
IZK
regulation range
rz
Differential regulator resistance (see Note 5)
1
VZ = VI(ref)
2
VZ = 5 V to 30 V, See Note 4
1
VZ = VI(ref), . . .
∆IZ = (52 – 2) mA
50
100
1.5
mA
3W
Vn
Noise voltage
VZ = 3 V
2
f = 0.1 Hz to 10 Hz VZ = 12 V
VZ = 30 V
50
200
µV
650
NOTES:
4. The average power dissipation, VZ • IZ • duty cycle, must not exceed the maximum continuous rating in any 10-ms interval.
Ȁ + ^ǒ ) ^{Ǔ 5. The regulator resistance for VZ > VI(ref), rz, is given by:}
rz
rz 1
R1
R2
PARAMETER MEASUREMENT INFORMATION
Input
VZ
IZ
TL430
Input
R1
II(ref)
R2
VI(ref)
VZ
IZ
TL430
VI(ref)
Figure 1. Test Circuit for V_Z = V_I(ref)
+ ^ǒ ) ^Ǔ ) VZ
VI(ref) 1
R1
R2
II(ref) R1
Figure 2. Test Circuit for V_Z > V_I(ref)
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