AS431 datasheet(5/20 Pages) DIODES

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AS431

Document number: DS36599 Rev. 4 - 2

5 of 20

www.diodes.com

May 2018

AS431

Electrical Characteristics (Operating Conditions: TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Test

Circuit

Conditions

Min

Typ

Max

Unit

VREF

Reference Voltage

0.5%

VKA = VREF, IKA = 10mA

2.487

2.500

2.512

1.0%

2.475

2.500

2.525

∆VREF

Deviation of Reference Voltage

Over Full Temperature Range

VKA = VREF,

IKA = 10mA

0 to +70°C

—

4.5

-40 to +85°C

—

4.5

-40 to +125°C

—

4.5

∆VREF

∆VKA

Ratio of Change in Reference

Voltage to the Change in Cathode

Voltage

IKA = 10mA

∆VKA = 10V to VREF

—

-1.0

-2.7

mV/V

∆VKA = 36V to 10V

—

-0.5

-2.0

IREF

Reference Current

IKA = 10mA, R1 = 10kΩ, R2 = ∞

—

0.7

µA

∆IREF

Deviation of Reference Current

Over Full Temperature Range

IKA = 10mA, R1 = 10kΩ, R2 = ∞,

TA = -40 to +125°C

—

0.4

1.2

µA

IKA

(Min)

Minimum Cathode Current for

Regulation

VKA = VREF

—

0.4

1.0

IKA

(Off)

Off-state Cathode Current

VKA = 36V, VREF = 0

—

0.05

1.0

µA

ZKA

Dynamic Impedance

VKA = VREF, IKA = 1 to 100mA,

f ≤ 1.0kHz

—

0.15

0.5

Ω

θJC

Thermal Resistance

—

SOT23

—

135.9

—

°C/W

SOT25

—

135.9

—

TO92 (Ammo Packing)

—

81.9

—

SOT89

—

29.8

—

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