AME
Adjustable Precision
Shunt Regulator
AME431B-2.5V
nElectrical Specifications (AME431Bxxxxx25)
TA = 250C, IREF = 10mA unless otherwise specified
Test
Circuit
Parameter
Test Condition
Symbol
Min
Typ
Max
Units
0.5%
1.0%
2.4875 2.50 2.5125
2.4750 2.50 2.5250
Reference Voltage
1
VREF
VKA = VREF, IKA = 10mA
V
-
-
4.5
4.5
8
VKA = VREF
IKA = 10mA -40oC to +125oC
DVKA
10V to VREF
DVKA
36V to 10V
IKA = 10mA
0oC to 70oC
Deviation of Reference Voltage
Over Temperature
1
2
DVREF
mV
18
=
-
-
-1.0
-0.5
-2.7
-2.0
Ratio of Change in Reference
Voltage to the Change in
Cathode Voltage
DVREF
DVKA
IKA = 10mA
mV/V
=
Reference Current
2
2
IREF
-
-
0.7
0.4
4.0
1.2
mA
mA
R1 = 10KW, R2 = ¥
R1 = 10KW, R2 = ¥
IKA = 10mA
Deviation of Reference Current
Over Full Temperature Range
DIREF
TA = -40oC to +125oC
Minimum Cathode Current for
Regulation
IKA
1
3
1
VKA = VREF
-
-
-
0.4
1.0
1.0
0.5
mA
mA
W
(MIN)
IKA
Off-State Cathode Current
Dynamic Impendance
VKA = 36V, VREF = 0V
0.05
0.15
(OFF)
VKA = VREF, IKA = 1 to 100mA
F<1KHz
Z
KA
R1
R3
VIN
VIN
VKA
VKA
VIN
VKA
IKA
IOFF
IKA
R1
R2
IREF
VKA=VREF (1+R1/R2)+IREFR1
VREF
VREF
Figure1.
Test Circuit for VKA=VREF
Figure2.
Test Circuit for VKA>VREF
Figure3.
Test Circuit for IOFF
Rev.B.04
9
AME [ ANALOG MICROELECTRONICS ]
