TL431ACD データシートの表示（PDF） - STMicroelectronics

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TL431ACD

Programmable voltage reference

STMicroelectronics 

TL431, TL432

3

Electrical characteristics

Electrical characteristics

Table 3.

Symbol

TL431C (Tamb = 25° C unless otherwise specified)

Parameter

TL431C

TL431AC

Unit

Min. Typ. Max. Min. Typ. Max.

Reference input voltage

Vref

VKA = Vref, Ik = 10 mA, Tamb = 25° C

Tmin ≤ Tamb ≤ Tmax

2.44 2.495 2.55 2.47 2.495 2.52 V

2.423

2.567 2.453

2.537

ΔVref

Reference input voltage deviation over temperature

range (1)

VKA = Vref, Ik = 10 mA, Tmin ≤ Tamb ≤ Tmax

3 17

mV

3 15

Ratio of change in reference input voltage to change

Δ-Δ---VV---r-k-e--a-f

in cathode to anode voltage

Ik = 10 mA - ΔVKA = 10 V to Vref

ΔVKA = 36 V to 10 V

-2.7 -1.4

-2 -1

-2.7 -1.4

-2 -1

mV/V

Reference input current

Iref

Ik = 10 mA, R1 = 10 kΩ, R2 = ∞

Tamb = 25° C

Tmin ≤ Tamb ≤ Tmax

1.8 4

5.2

µA

1.8 4

5.2

Reference input current deviation over temperature

range

ΔIref

Ik = 10 mA, R1 = 10 kΩ, R2 =∞

Tmin ≤ Tamb ≤ Tmax

0.4 1.2

µA

0.4 1.2

Minimum cathode current for regulation

Imin

VKA = Vref

0.5 1

mA

0.5 0.6

Ioff

⏐ZKA⏐

Off-state cathode current

Dynamic impedance (2)

VKA = Vref, Δ Ik = 1 to 100 mA, f ≤ 1 kHZ

2.6 1000

0.22 0.5

2.6 1000 nA

Ω

0.22 0.5

1. See definition of Section 3.1: Reference input voltage deviation over temperature range.

2. The dynamic impedance is defined as |ZKA| = Δ-----V----K----A--

ΔIk

Doc ID 4467 Rev 11

5/21

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