Adjustable Precision Shunt Regulator

AP432/AP432A

Anachip Corp.

www.anachip.com.tw

Rev.1.0 May.7, 2004

4/16

Absolute Maximum Ratings

Cathode Voltage……………....……...........…..........……………………………………...……….20V

Continuous cathode current ………………………………......................……………………...-10mA ~ 250mA

Reference input current range ………………………...….………....................………………………………10mA

Operating temperature range (AP432) ……………………………………………………………… -20

(AP432I……………..…..…............……………………………..……. -40

Lead Temperature……………….…………….…..……………………..………………..……........260

Storage Temperature ……………………..............…......………………….......……...........-65

Power Dissipation (Notes 1. 2)

SOT89 .……………..……..……………………...........….... 0. 80W

TO92.....…………….………………………....……….. ..... 0.78W

SOT23 …………………..…..…………………………….…. 0.25W

SOT25...……………………..………….……………………..0.25W

SOP...………………….……………………………..……… 0.6W

Note 1: TJ, max =150

Note 2: Ratings apply to ambient temperature at 25

Parameter

Test conditions

Symbol Min.

Typ.

Max.

Unit

AP432

1.227

1.252

Reference voltage

(Fig.1)

AP432A

1.233

1.24

1.246

V

Deviation of reference input voltage

over temperature (Note 3)

Ta = full range

(Fig.1)

3.0

20

mV

Ratio of the change in reference

voltage to the change in cathode

voltage

(Fig.2)

KA

REF

V

V

∆

∆

-1.4

-2.0

mV/V

Reference input current

R1 = 10KΩ,R2 = ∞

1.4

3.5

µA

Deviation of reference input current

over temperature

R1 = 10KΩ,R2 = ∞

Ta = Full range (Fig.2)

0.4

1.2

µA

Minimum cathode current for

regulation

0.15

0.3

mA

Off-state current

0.1

1.0

µA

Dynamic output impedance (Note 4)

KA

Z

0.2

0.5

Ω