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Functional Block Diagram & Symbol
Functional Block Diagram
Symbol
Cathode
Reference
Anode
Test Circuits
Fig 1. V
K
=V
REF
IN
I
REF
I
K
V
REF
R
2
V
REF
I
I
V
K
Fig 2. V
K
>V
REF
IN
R
1
I
I
V
K
I
REF
I
K
I
OFF
Fig 3. Off-State Current
IN
V
K
Note: V
K
=V
REF
(1+R
1
/R
2
)+I
REF
xR
1
Electrical Characteristics
(T
A
=25
o
C unless otherwise specified)
Characteristics
Reference Input Voltage
(Fig1)
0.4%
0.8%
Symbol
V
REF
V
REF(dev)
ΔV
REF
/
ΔV
K
I
REF
I
REF(dev)
I
K(min)
I
K(off)
Z
K
Test Conditions
V
K
=V
REF
, I
K
=10mA
V
K
=V
REF
, I
K
=10mA
T
min
≤T
a
≤T
max (-40~+125
℃
)
I
K
=10mA,
ΔV
K
=10V to V
REF
I
K
=10mA,
ΔV
K
=36V to 10V
I
K
=10mA, R
1
=10kΩ,
R
2
=∞
I
K
=10mA, R
1
=10kΩ,
R
2
=∞, T
a
=-40~+125
o
C
V
K
=V
REF
V
K
=36V, V
REF
=0
V
K
=V
REF
, f≤1kHz
I
K
=1 to 100mA
Min
2.49
2.48
-
-
-
-
-
-
-
-
Typ
2.50
2.50
4.5
1.0
0.5
0.7
0.4
0.4
0.05
0.15
Max
2.51
2.52
16
2.7
2.0
4
1.2
1.0
1.0
0.5
Unit
V
mV
mV/V
mV/V
uA
uA
mA
uA
Ω
Deviation of Reference Input Voltage
Over-Temperature
(Fig1)
Ratio of Change in Reference Input Voltage
to the Change in Cathode Voltage
(Fig2)
Reference Input Current
(Fig2)
Deviation of Reference Input Current Over
Full Temperature Range
(Fig2)
Minimum Cathode Current for Regulation
(Fig1)
Off-State Cathode Current
(Fig3)
Dynamic Output Impedance
(Fig1)
DS-RS431-03 October, 2007
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