TL431(2003) 查看數據表（PDF） - Fairchild Semiconductor

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TL431
(Rev.:2003)

Programmable Shunt Regulator

Fairchild Semiconductor 

TL431/TL431A

Electrical Characteristics

(TA = +25°C, unless otherwise specified)

Parameter

Reference Input Voltage

Deviation of Reference

Input Voltage Over-

Temperature (Note 1)

Ratio of Change in

Reference Input Voltage

to the Change in

Cathode Voltage

Reference Input Current

Deviation of Reference

Input Current Over Full

Temperature Range

Minimum Cathode Cur-

rent for Regulation

Off - Stage Cathode

Current

Dynamic Impedance

(Note 2)

Symbol

Conditions

VREF VKA=VREF, IKA=10mA

TL431

TL431A

Unit

Min. Typ. Max. Min. Typ. Max.

2.440 2.495 2.550 2.470 2.495 2.520 V

∆VREF/ VKA=VREF, IKA=10mA

∆T

TMIN≤TA≤TMAX

∆VREF/

∆VKA

IKA

=10mA

∆VKA=10V-

VREF

∆VKA=36V-

10V

IREF

IKA=10mA,

R1=10KΩ,R2=∞

IKA=10mA,

∆IREF/∆T

R1=10KΩ,R2=∞

TA =Full Range

IKA(MIN) VKA=VREF

IKA(OFF)

ZKA

VKA=36V,

VREF=0

VKA=VREF,

IKA=1 to 100mA

f ≥1.0KHz

-

4.5 17

- - 10 -2.7

- -0.5 -2.0

- 1.5 4

-

0.4 1.2

- 0.45 1.0

- 0.05 1.0

- 0.15 0.5

-

4.5 17 mV

- -1.0 -2.7

mV/V

- -0.5 -2.0

- 1.5 4 µA

-

0.4 1.2 µA

- 0.45 1.0 mA

- 0.05 1.0 µA

- 0.15 0.5 Ω

• TMIN= -25 °C, TMAX= +85 °C

3

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