TL431BILPE3 datasheet(13/83 Pages) TI

13 / 83 page

7.12 Electrical Characteristics, TL431BI, TL432BI

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

PARAMETER

TEST CIRCUIT

TEST CONDITIONS

TL431BI, TL432BI

UNIT

MIN

TYP

MAX

Vref

Reference voltage

See Figure 8-1 VKA = Vref, IKA = 10 mA

2483

2495

2507

VI(dev)

Deviation of reference input

voltage over full temperature

range(1)

See Figure 8-1 VKA = Vref, IKA = 10 mA

ΔVref /

ΔVKA

Ratio of change in reference

voltage to the change in

cathode voltage

See Figure 8-2 IKA = 10 mA

ΔVKA = 10 V – Vref

–1.4

–2.7

mV/V

ΔVKA = 36 V – 10 V

–1

–2

Iref

Reference input current

See Figure 8-2 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞

µA

II(dev)

Deviation of reference input

current over full temperature

range(1)

See Figure 8-2 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞

0.8

2.5

µA

Imin

Minimum cathode current for

regulation

See Figure 8-1 VKA = Vref

0.4

0.7

Ioff

Off-state cathode current

See Figure 8-3 VKA = 36 V, Vref = 0

0.1

0.5

µA

|zKA|

Dynamic impedance(2)

See Figure 8-1

VKA = Vref, f ≤ 1 kHz,

IKA = 1 mA to 100 mA

0.2

0.5

Ω

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TL431, TL432

SLVS543Q – AUGUST 2004 – REVISED JULY 2022

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