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| AME431B-2.5V Datasheet, PDF (9/22 Pages) Analog Microelectronics – Adjustable Precision Shunt Regulator | |||
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AME
AME431B-2.5V
Adjustable Precision
Shunt Regulator
n Electrical Specifications (AME431Bxxxxx25)
TA = 250C, IREF = 10mA unless otherwise specified
Parameter
Reference Voltage
0.5%
1.0%
Test
Circuit Symbol
1
VREF
Test Condition
VKA = VREF, IKA = 10mA
Min Typ Max Units
2.4875 2.50 2.5125
V
2.4750 2.50 2.5250
Deviation of Reference Voltage
Over Temperature
Ratio of Change in Reference
Voltage to the Change in
Cathode Voltage
Reference Current
Deviation of Reference Current
Over Full Temperature Range
Minimum Cathode Current for
Regulation
1
âVREF VKA = VREF
0oC to 70oC
-
IKA = 10mA -40oC to +125oC -
âVKA =
2
âVREF
âVKA
IKA = 10mA
10V to VREF
âVKA =
-
-
36V to 10V
IKA = 10mA
2
IREF
R1 = 10Kâ¦, R2 = â
-
R1 = 10Kâ¦, R2 = â
2
âIREF
IKA = 10mA
-
TA = -40oC to +125oC
1
IKA
VKA = VREF
-
(MIN)
4.5
8
mV
4.5
18
-1.0 -2.7
mV/V
-0.5 -2.0
0.7 4.0 µA
0.4 1.2 µA
0.4 1.0 mA
Off-State Cathode Current
3
IKA
(OFF)
VKA = 36V, VREF = 0V
-
0.05 1.0
µA
Dynamic Impendance
1
ZKA
VKA = VREF, IKA = 1 to 100mA
F<1KHz
-
0.15 0.5
â¦
R1
VIN
R3
VKA
VIN
V KA
VIN
IKA
IKA
R1
VREF
IREF
R2
VREF
VKA=VREF (1+R1/R2)+IREFR1
IOFF
VKA
Figure1.
Test Circuit for VKA=VREF
Rev.B.04
Figure2.
Test Circuit for VKA>VREF
Figure3.
Test Circuit for IOFF
9
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