H431AM datasheet(2/4 Pages) HSMC

2 / 4 page

HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : Preliminary Data

Issued Date : 1998.04.08

Revised Date : 2001.02.15

Page No. : 2/4

H431AM, H431BM, H431CM

HSMC Product Specification

Functional Block Diagram & Symbol

Test Circuits

Electrical Characteristics ( Ta=25

°C unless otherwise specified )

Characteristics

Symbol

Test Conditions

Min

Typ

Max

Unit

H431AM

2.445 2.495 2.545

H431BM

2.470 2.495 2.520

Reference Input Voltage

H431CM

VREF

VKA=VREF, IK=10mA

2.480 2.495 2.510

Deviation of Reference Input Voltage

Over-Temperature

VREF(dev)

VKA=VREF, IK=10mA

Tmin

≤T

max

-4

IK=10mA,

∆V

KA=10V-VREF

--1.4

-2.7

Ratio of Change in Reference Input

Voltage to the Change in Cathode

Voltage

∆V

REF /

∆V

IK=10mA,

∆K

KA=36V-10V

--1.0

-2.0

Reference Input Current

IREF

IK=10mA, R1=10k

Ω,

R2=

∞

-2

Deviation of Reference Input Current

Over Full Temperature Range

IREF(dev)

IK=10mA, R1=10k

Ω,

R2=

∞, T

a=Full

Range

-0.4

1.2

Minimum Cathode Current for

Regulation

IK(min)

VKA=VREF

-0.4

1.0

Off-State Cathode Current

IK(off)

VKA=36V, VREF=0

0.1

1.0

Dynamic impedance

ZKA

VKA=VREF, f

≤1.0KHz

IK=1 to 100mA

-0.2

0.5

Ω

Functional Block Diagram :

Symbol :

Cathode

Reference

Anode

Cathode

VREF

Reference

Anode

IREF

VREF

Fig1. Test Circuit for VZ=VREF

IREF

VREF

Fig 2. Test Circuit for VZ>VREF

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

Fig3. Test Circuit for Off-State

Current

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