Electrical characteristics

TL1431

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3

Electrical characteristics

Table 3.

Symbol

Parameter

TL1431C

TL1431AC

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Reference input voltage - see Figure 4

2.490 2.500 2.510 2.493 2.500 2.507

V

Reference input voltage deviation over

320

3

20

mV

Temperature coefficient of reference input

±13

±90

±13

±90

ppm/°C

Ratio of change in reference input voltage to

change in cathode to anode voltage - see

Figure 5

-2

-1.1

-2

-1.1

mV/V

Reference input current

1.5

2.5

3

1.5

2.5

3

µA

Reference input current deviation over

temperature range

0.2

1.2

0.2

1.2

µA

Minimum cathode current for regulation - Figure 4

0.5

1

0.5

0.6

mA

Off-state cathode current - see Figure 6

180

500

180

500

nA

0.20.5

0.20.5

Ω

1.

See Reference input voltage deviation over temperature range in Section 4: Parameter definitions on page 9.

2.

See Temperature coefficient of reference input voltage in Section 4: Parameter definitions on page 9.

3.

See Dynamic impedance in Section 4: Parameter definitions on page 9.

ΔVref

ΔT

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

ΔVref

ΔVka

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