TL431ACLP datasheet(8/79 Pages) TI

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6.7 Electrical Characteristics, TL431Q, TL432Q

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

PARAMETER

TEST CIRCUIT

TEST CONDITIONS

MIN TYP MAX

UNIT

Vref

Reference Voltage

See Figure 7-1

VKA = Vref, IKA = 10mA

2440 2495 2550

VI(dev)

Deviation of reference

input voltage over full

temperature range (1)

See Figure 7-1

VKA = Vref, IKA = 10mA

ΔVref /

ΔVKA

Ratio of change in

reference voltage to

the change in cathode

voltage

See Figure 7-2

IKA = 10mA

ΔVKA = 10V- Vref

–1.4 –2.7

mV/V

ΔVKA = 36V- 10V

–1

–2

mV/V

Iref

Reference Input Current See Figure 7-2

IKA = 10mA, R1 = 10kΩ, R2 = ∞

µA

II(dev)

Deviation of reference

input current over full

temperature range (1)

See Figure 7-2

IKA = 10mA, R1 = 10kΩ, R2 = ∞

0.8

2.5

µA

Imin

Minimum cathode

current for regulation

See Figure 7-1

VKA = Vref

0.4

Ioff

Off-state cathode current See Figure 7-3

VKA = 36V, Vref = 0

0.1

µA

|ZKA|

Dynamic Impedance (2)

See Figure 7-1

VKA = Vref, f ≤ 1kHz,

IKA = 1mA to 100mA

0.2

0.5

Ω

(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 Temperature

Coefficient.

(2)

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

Impedance.

TL431, TL432

SLVS543S – AUGUST 2004 – REVISED MAY 2024

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