APEC
ADJUSTABLE PRECISION SHUNT
REGULATOR
AP431
TYPICAL PERFORMANCE CHARACTERISTICS
CATHODE CURRENT
Vs.
CATHODE VOLTAGE
150
125
100
800
CATHODE CURRENT
Vs.
CATHODE VOLTAGE
V
K A
= V ref
T
A
= 25
o
C
600
V
KA
= Vre f
T
A
= 2 5
o
C
Cathode Current (mA)
75
50
25
0
- 25
- 50
- 75
- 100
-2
-1
0
1
2
3
Cathode Current (µA)
400
200
0
- 200
-1
0
1
2
3
Cathode Voltage (V)
Cathode Voltage (V)
REFERENCE VOLTAGE
Vs.
JUNCTION TEMPERATURE
2520
3
2. 5
2
1. 5
1
0. 5
0
- 20
REFERENCE INPUT CURRENT
Vs.
JUNCTION TEMPERATURE
Reference Current (µA)
Reference Voltage (mV)
2515
2510
2505
2500
2495
2490
2485
2480
- 20
V
KA
=Vref
I
KA
=10mA
R1 = 10k
Ω
R2 =
∞
I
KA
=10mA
0
20
40
60
80
100
o
120
0
20
40
60
80
o
100
120
Junction Temperature ( C)
Junction Temperature ( C)
ADVANCED POWER ELECTRONICS CORP.
3