Adjustable Precision Shunt Regulator
AP431/AP431A
Anachip Corp.
www.anachip.com.tw Rev. A6 Feb.12, 2004
4/17
Absolute Maximum Ratings
Cathode Voltage ………………………………......…..............................……………………………...……….36V
Continuous Cathode Current ………………………….……...............................…………….... -10mA ~ 250mA
Reference Input Current Range ……………..………..............……..............................………….…....... 10mA
Operating Temperature Range (AP431)…………..…….…….....………………...........………........ -20oC ~
85oC
(AP431I).……………….….............…………………………....…….. -40oC ~ 85oC
Lead Temperature………………………….………….…….…………....…………………….........…............ 260oC
Storage Temperature ……………………………......…....….............………………..……............ -65oC ~ 150oC
Power Dissipation (Notes 1. 2) SOT89 Package .…………......……………………….............….... 0. 80W
TO92 Package ….…………..………………………....……….....… 0.78W
SOT23 package .……………..…………….......………………….…. 0.23W
SOT25 Package……………….……...…………….…………………..0.23W
SOP Package………………..………………………………..……… 0.6W
Note 1: TJ, max =150oC
Note 2: Ratings apply to ambient temperature at 25oC
Electrical Characteristics (Ta=25oC , unless otherwise specified.)
PARAMETER TEST CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
AP431 2.470 2.495 2.520
Reference voltage VKA = VREF,
I KA = 10mA (Fig.1) AP431A VREF 2.482 2.507
V
Deviation of Reference input voltage
over temperature (Note 3)
VKA = VREF, IKA = 10mA,
Ta = Full range (Fig.1) VREF 8.0 20 mV
VKA = 10V
~VREF ∆VREF -1.4 -2.0 mV/V
Ratio of the change in Reference
voltage to the change in Cathode
voltage
IKA = 10mA (Fig.2)
VKA= 36V ~10V ∆VKA -1 -2 mV/V
Reference input current R1 = 10KΩ,R2 = ∞ IKA= 10mA
(Fig.2) IREF 1.4 3.5 µA
Deviation of Reference input current
over temperature
R1 = 10KΩ,R2 = ∞ IKA = 10mA
Ta = Full range (Fig.2) αIREF 0.4 1.2 µA
Minimum Cathode current for
regulation VKA = VREF (Fig.1) IKA(MIN) 0.19 0.5 mA
Off-state current VKA = 36V, VREF = 0V (Fig.3) IKA(OFF) 0.1 1.0 µA
Dynamic output impedance (Note 4)
V KA = VREF V KA = VREF
∆IKA = 0.1mA ~ 15mA
Frequency ≤ 1KHz (Fig.1)
KA
Z 0.2 0.5 Ω
V
MAX
V
MIN
T
I
T
2
TEMPERATURE
V
DEV
= V
MAX
- V
MIN