TL431Z

ELECTRICAL CHARACTERISTICS

Characteristic

Symbol

Test Condition

Min

Typ

Max

Unit

Reference Input Voltage

TL431Z (2%)

TL431Z-A (1%)

TL431Z-C (0.5%)

2.440

2.470

2.482

2.495

2.495

2.495

2.550

2.520

2.508

V

Deviation of Reference Input

Voltage Over Full

Temperature Range

3

17

MV

Ratio of Change in

Reference Input Voltage to

the Change in Cathode

Voltage

∆

∆

V

V

REF

KA

-1.4

-1.0

-2.7

-2.0

mV/V

Reference Input Current

1.8

4

㎂

Deviation of Reference Input

Current Over Full

Temperature Range

0.4

1.2

㎂

Minimum Cathode Current

for Regulation

0.25

0.5

mA

Off-State Cathode Current

0.17

0.9

㎂

Dynamic Impedance

1.0KHz

0.27

0.5

Ω

Note :

1. The deviation parameter ∆Vref is defined as the difference between the maximum and minimum values obtained over

the full operating ambient temperature range that applies

The average temperature coefficient of the reference input voltage, aVref is defined as:

αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature.

(Refer to Figure 6.)

2. The dynamic impedance ZKA is defined as

When the device is programmed with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance

of the circuit is defined as:

Rev. 01