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TL431LI

TL432LI

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SLVSDQ6A – JULY 2018 – REVISED NOVEMBER 2018

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(1)

The deviation parameters VI(dev) and II(dev) are defined as the differences between the maximum and minimum values obtained over the

rated temperature range. For more details on VI(dev) and how it relates to the average temperature coefficient, see Parameter

Measurement Information.

(2)

The dynamic impedance is defined by |ZKA| = ΔVKA/ΔIKA. For more details on |ZKA| and how it relates to VKA, see Parameter

Measurement Information.

7.5 Electrical Characteristics

over recommended operating conditions, TA = 25°C (unless otherwise noted)

PARAMETER

TEST CIRCUIT

TEST CONDITIONS

MIN

TYP MAX

UNIT

Vref

Reference Voltage

See Figure 14

VKA = Vref, IKA = 1 mA

TL43xLIAx devices

2470 2495 2520

mV

TL43xLIBx devices

2483 2495 2507

mV

VI(dev)

Deviation of reference

input voltage over full

temperature range (1)

See Figure 14

VKA = Vref, IKA = 1 mA

TL43xLIxC devices

2.5

11

mV

TL43xLIxI devices

6

17

mV

TL43xLIxQ devices

10

27

mV

ΔVref /

ΔVKA

Ratio of change in

reference voltage to the

change in cathode

voltage

See Figure 15

IKA = 1 mA

ΔVKA = 10 V - Vref

–1.4

–2.7

mV/V

ΔVKA = 36 V - 10 V

–1

–2

mV/V

Iref

Reference Input Current

See Figure 15

IKA = 1 mA, R1 = 10kΩ, R2 = ∞

0.2

0.4

µA

II(dev)

Deviation of reference

input current over full

temperature range (1)

See Figure 15

IKA = 1 mA, R1 = 10kΩ, R2 = ∞

0.1

0.3

µA

Imin

Minimum cathode

current for regulation

See Figure 14

VKA = Vref

1

mA

Ioff

Off-state cathode

current

See Figure 16

VKA = 36 V, Vref = 0

0.1

1

µA

|ZKA|

Dynamic Impedance (2)

See Figure 14

VKA = Vref, IKA = 1 mA to 15 mA

0.3

0.65

Ω