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PRODUCT SPECIFICATION
RC431A
3
Dissipation Rating Table
Electrical Specifications
T
A
= 25
°
C (unless otherwise noted)
,
at free-air
Notes:
1. Functional operation under these conditions is not implied. Permanent damage may occur if the device is subjected to
conditions outside these ratings.
2. Full temperature range is 0
°
C to 70
°
C.
3. The deviation parameters V
ref(dev)
and I
ref(dev)
are defined as the differences between the maximum and minimum values
obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage,
¥
V
ref
, is defined as:
where
D
T
A
is the rated operating free-air temperature range of the device.
¥
V
ref
can be positive or negative depending on whether minimum V
ref
or maximum V
ref
, respectively, occurs at the lower
temperature.
4. The dynamic impedance is defined as:
Z
KA
=
D
V
KA
/
D
I
K
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given
by:
Package
TO-92
SOT23-5
Power Rating
T
A
£
25
°
C
775mW
150mW
Derating Factor
T
A
3
25
°
C
6.2mW/
O
C
1.2mW/
o
C
Power Rating
T
A
= 70
°
C
496mW
96mW
Symbol
V
ref
Parameters
Conditions
Min.
1.228
1.221
Typ.
1.24
Max.
1.252
1.259
Units
V
Reference Voltage
V
KA
= V
ref
, T
A
= 25
°
C
I
K
= 10mA,
T
A
= 0 to 70
°
C
V
KA
= V
ref
, I
K
= 10mA,
See note 2 and Figure 1.
I
K
= 10mA,
D
V
KA
= V
ref
to 6V.
See figure 2.
I
K
= 10mA,
R1 = 10K
W
, R2 =
¥
See figure 2.
I
K
= 10mA,
R1 = 10K
W
, R2 =
¥
See note 1 & figure 2.
V
KA
= V
ref
See figure 1.
V
KA
= 6V, V
ref
= 0
See figure 3.
V
KA
= V
ref
, f
£
1KHz
I
K
= 0.1mA to 15mA,
See figure 1.
V
ref (dev)
V
ref
deviation over full temperature
range (see note 2)
Ratio of V
ref
change in cathode
voltage change
4
12
mV
D
V
ref
D
V
KA
-1.5
-2.7
mV
V
I
ref
Reference terminal current
0.15
0.5
m
A
I
ref(dev)
I
ref
deviation over full temperature
range (see note 2)
0.05
0.3
m
A
I
K(min)
Minimum cathode current for
regulation
Off-state cathode current
55
80
m
A
I
off
0.001
0.1
m
A
|Z
KA
|
Dynamic impedance (see note 3)
0.25
0.4
W
¥
V
ref
ppm/
°
C
á
V
---------------------------------------------------------------------------------------------
V
T
¤
25
°
C
=
á
{
}
10
6
′
D
T
A
=
Z
KA
V
D
I
-------
Z
KA
1
R
1
R
2
------
+
è
′
=