RS431BA datasheet(2/8 Pages) ORISTER

2 / 8 page

Page No. : 2/2

DS-RS431-03 October, 2007

www.Orister.com

Functional Block Diagram & Symbol

Test Circuits

Electrical Characteristics (T

A=25

oC unless otherwise specified)

Characteristics

Symbol

Test Conditions

Min

Typ

Max

Unit

0.4%

2.49

2.50

2.51

Reference Input Voltage

(Fig1)

0.8%

VREF

VK=VREF, IK=10mA

2.48

2.50

2.52

Deviation of Reference Input Voltage

Over-Temperature

(Fig1)

VREF(dev)

VK=VREF, IK=10mA

Tmin≤Ta≤Tmax (-40~+125℃)

4.5

IK=10mA,

ΔVK=10V to VREF

1.0

2.7

mV/V

Ratio of Change in Reference Input Voltage

to the Change in Cathode Voltage

(Fig2)

ΔVREF /

ΔVK

IK=10mA,

ΔVK=36V to 10V

0.5

2.0

mV/V

Reference Input Current

(Fig2)

IREF

IK=10mA, R1=10kΩ,

R2=∞

0.7

Deviation of Reference Input Current Over

Full Temperature Range

(Fig2)

IREF(dev)

IK=10mA, R1=10kΩ,

R2=∞, Ta=-40~+125

0.4

1.2

Minimum Cathode Current for Regulation

(Fig1)

IK(min)

VK=VREF

0.4

1.0

Off-State Cathode Current

(Fig3)

IK(off)

VK=36V, VREF=0

0.05

1.0

Dynamic Output Impedance

(Fig1)

VK=VREF, f≤1kHz

IK=1 to 100mA

0.15

0.5

Functional Block Diagram

Symbol

Fig 1. VK=VREF

Fig 2. VK>VREF

Fig 3. Off-State Current

Reference

Anode

Cathode

IREF

VREF

IREF

VREF

Note: VK=VREF (1+R1/R2)+IREFxR1

IOFF

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