Diodes AP431_A - Manual (Page 5)

AP431/AP431A
Document number: DS31002 Rev. 21 - 2
5 of 17
www.diodes.com
June 2013
© Diodes Incorporated
AP431/AP431A
Typical Performace Characteristics
0.5 1.5 2.5 -0.5 -1
CATHODE VOLTAGE (V)
Cathode Current vs. Cathode Voltage
CA
TH
O
DE CUR
RENT
(m
A)
100
0
-100
V = V
T = 25 C
KA REF
A

0.5 1 1.5 2 2.5 0 -0.5 -1
CATHODE VOLTAGE (V)
Cathode Current ( A) vs. Cathode Voltage 
CA
THOD
E
CURRE
NT
(
A
)

600
400
200
0
-200
I
KA(MIN)
V = V
T = 25 C
KA REF
A

0 60 80 -20 -40
FREE-AIR TEMPERATURE (C)
Reference Voltage vs. Free-Air Temperature
20 40
C
A
T
HO
D
E
C
U
R
R
E
N
T
(m
A
)
250
2490
2480
2485
2495
R1 = 10k
I
= 10mA
KA
25 50 75 100 125 0 -25 -50
FREE-AIR TEMPERATURE (V)
Reverence Input Current vs. Free Temperature
R
EF
E
R
EN
C
E I
N
P
U
T
CU
R
R
EN
T
(
A)

2
1.8
1.4
1.2
1
1.6
10 25 30 5 0
CATHODE VOLTAGE (V)
Change in Reference Voltage vs. Cathode Voltage
15 20
C
H
A
N
G
E i
n
R
E
F
E
R
EN
C
E V
O
LT
A
G
E (
m
V
)
0
-6
-12
-10
-2
-4
-8
I = 10mA
T = 25 C
KA
A
