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參數(shù)資料
| 型號： | RA0431 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Low-Voltage Adjustable Precision Shunt Regulator(低電壓精度可調(diào)分流穩(wěn)壓器) |
| 中文描述： | 低電壓可調(diào)節(jié)精密并聯(lián)穩(wěn)壓器（低電壓精度可調(diào)分流穩(wěn)壓器） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 39K |
| 代理商： | RA0431 |
PRODUCT SPECIFICATION
RA0431A
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
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
=
V
KA
/
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
SOT23-5
Power Rating
T
A
≤
25
°
C
150mW
Derating Factor
T
A
≥
25
°
C
1.2mW/
o
C
Power Rating
T
A
= 70
°
C
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,
V
KA
= V
ref
to 6V.
See figure 2.
I
K
= 10mA,
R1 = 10K
, R2 =
∞
See figure 2.
I
K
= 10mA,
R1 = 10K
, 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
V
ref
V
KA
-1.5
-2.7
mV
V
I
ref
Reference terminal current
0.15
0.5
μ
A
I
ref(dev)
I
ref
deviation over full temperature
range (see note 2)
0.05
0.3
μ
A
I
K(min)
Minimum cathode current for
regulation
Off-state cathode current
55
80
μ
A
I
off
0.001
0.1
μ
A
|Z
KA
|
Dynamic impedance (see note 3)
0.25
0.4
∞
V
ref
ppm/
°
C
V
---------------------------------------------------------------------------------------------
V
T
25
°
C
=
{
}
10
6
×
T
A
=
Z
KA
V
I
-------
Z
KA
1
R
1
R
2
------
+
×
≈
=
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