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參數資料
| 型號： | IRU431LCS |
| 英文描述： | VOLT REGULATOR|ADJUSTABLE|+1.24 TO +15V|BIPOLAR|SOP|8PIN|PLASTIC |
| 中文描述： | 電壓調節器|調節| 1.24至15V |雙極|專科| 8引腳|塑料 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 93K |
| 代理商： | IRU431LCS |
IRU431L / IRU431AL
3
Rev. 1.5
07/13/01
PIN DESCRIPTIONS
BLOCK DIAGRAM
Figure 2 - Simplified block diagram of the IRU431L
Resistors from the Ref pin to the cathode pin and to ground
form a divider that sets the output voltage.
The output of the shunt regulator. A capacitor of 1
μ
F minimum
value must be connected from this pin to Anode pin to insure
unconditional stability.
Ground pin. This pin must be connected to the lowest potential
in the system and all other pins must be at higher potential with
respect to this pin.
These pins are not connected internally.
Note 2:
The dynamic impedance when V
KA
=Vref is de-
fined as:
Cathode
1.24V
Anode
Ref
+
When the device is operating with two external resistors
(See figure 3), the total dynamic impedance of the cir-
cuit is given by:
SOT-23
5-PIN
PIN#
4
SOT-23
3-PIN
PIN#
1
8-PIN
SOIC
PIN#
8
PIN SYMBOL PIN DESCRIPTION
Ref
3
5
1, 2
2
3
NA
1
3, 6
2, 4, 5, 7
Cathode
Anode
NC
'
Z
KA
0
'
=
V
KA
I
K
'
Z
KA
'
= V
'
Z
KA
0
'
×
o
1 +
p
I
R1
R2
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