AP431/AP431A
Adjustable Precision Shunt Regulator
Absolute Maximum Ratings
Cathode Voltage ………………………………......…..............................……………………………...……….36V
Continuous Cathode Current ………………………….……...............................…………….... -10mA ~ 250mA
Reference Input Current Range ……………..………..............……..............................………….…....... 10mA
Operating Temperature Range (AP431)…………..…….…….....………………...........………......-20
o
C ~ 85
o
C
(AP431I).……………….….............………………………...…….. -40
o
C ~ 85
o
C
Lead Temperature………………………….………….…….…………....…………………….........…............ 260
o
C
Storage Temperature ……………………………......…....….............………………..……............ -65
o
C ~ 150
o
C
Power Dissipation (Notes 1. 2)
SOT89 Package .…………......……………………….............….... 0. 80W
TO92 Package ….…………..………………………....……….....… 0.78W
SOT23 package .……………..…………….......………………….…. 0.25W
SOT25 Package……………….……...…………….…………………..0.25W
SOP Package………………..………………………………..……… 0.6W
o
Note 1: TJ, max =150 C
Note 2: Ratings apply to ambient temperature at 25
o
C
Electrical Characteristics
(Ta=25
o
C , unless otherwise specified.)
PARAMETER
TEST CONDITIONS
SYMBOL MIN.
TYP. MAX. UNIT
V
KA
= V
REF
,
AP431
I
KA
= 10mA
(Fig.1)
AP431A
Deviation of Reference input voltage V
KA
= V
REF
, I
KA
= 10mA,
over temperature (Note 3)
Ta = Full range (Fig.1)
Ratio of the change in Reference
V
KA
= 10V
voltage to the change in Cathode
I
KA
= 10mA
(Fig.2)
~V
REF
voltage
V
KA
= 36V ~10V
R1 = 10KΩ,R2 =
∞
I
KA
= 10mA
Reference input current
(Fig.2)
Deviation of Reference input current R1 = 10KΩ,R2 =
∞
I
KA
= 10mA
over temperature
Ta = Full range (Fig.2)
Minimum Cathode current for
V
KA
= V
REF
(Fig.1)
regulation
Off-state current
V
KA
= 36V, V
REF
= 0V (Fig.3)
V
KA
= V
REF
V
KA
= V
REF
Dynamic output impedance (Note 4)
∆I
KA
= 0.1mA ~ 15mA
Frequency
≤
1KHz (Fig.1)
Reference voltage
V
REF
V
REF
∆V
REF
∆V
KA
I
REF
αI
REF
I
KA(MIN)
I
KA(OFF)
2.470 2.495 2.520
2.482
2.507
8.0
-1.4
-1
1.4
0.4
0.19
0.1
0.2
20
V
mV
-2.0 mV/V
-2
3.5
1.2
0.5
1.0
0.5
mV/V
µA
µA
mA
µA
Ω
Z
KA
V
MAX
V
DEV
= V
MAX
- V
MIN
V
MIN
T
I
TEMPERATURE
T
2
Anachip Corp.
www.anachip.com.tw
4/17
Rev.1.0 May.7, 2004
ANACHIP [ ANACHIP CORP ]
