AS431 datasheet(5/19 Pages) DIODES

5 / 19 page

AS431

Document number: DS36599 Rev. 3 - 2

5 of 19

www.diodes.com

October 2013

AS431

A Product Line of

Diodes Incorporated

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

–

SOT-23

–

135.9

–

°C/W

SOT-23-5

–

135.9

–

TO-92

–

81.9

–

SOT-89

–

29.8

–

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