Electrical Characteristics

TL1431

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Electrical Characteristics

Table 3.

Symbol

Parameter

TL1431C

TL1431AC

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Reference Input Voltage - figure 1

2.490 2.500 2.510 2.493 2.500 2.507

V

∆V

ref

Reference Input Voltage Deviation Over

1.

∆V

320

3

20

mV

Temperature Coefficient of Reference Input

2.

The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits within

which the reference is guaranteed.

±13

±90

±13

±90

ppm/°C

Ratio of Change in Reference Input Voltage to

Change in Cathode to Anode Voltage - figure 2

Ik = 10mA -

∆V

-2

-1.1

-2

-1.1

mV/V

Reference Input Current

Ik = 10mA, R1 = 10k

Ω, R2 = ∞

1.5

2.5

3

1.5

2.5

3

µA

∆I

ref

Reference Input Current Deviation Over

Temperature Range

Ik = 10mA, R1 = 10k

Ω, R2 =∞

0.2

1.2

0.2

1.2

µA

Minimum Cathode Current for Regulation - figure 1

0.5

1

0.5

0.6

mA

Off-State Cathode Current - figure 3

180

500

180

500

nA

⏐ZKA⏐

3.

The dynamic Impedance is definied as

0.20.5

0.20.5

Ω

T1

T2

Temperature

∆Vref

∆T

----------------

Temperature

25°C

Max

2.5V

min

-n

ppm/°C

+n

ppm

/°C

∆Vref

∆Vka

----------------

∆VKA

∆IK

-----------------