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參數(shù)資料
| 型號(hào)： | IRU431LCL5 |
| 廠商： | International Rectifier |
| 英文描述： | LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| 中文描述： | 低電壓調(diào)節(jié)精密并聯(lián)穩(wěn)壓器 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 47K |
| 代理商： | IRU431LCL5 |
IRU431L / IRU431AL
3
Rev. 1.8
02/20/02
www.irf.com
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
=V
REF
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
PIN SYMBOL PIN DESCRIPTION
Ref
3
5
1, 2
2
3
NA
Cathode
Anode
NC
Z
KA0
=
V
KA
I
K
Z
KA
= V
Z
KA0
×
o
1 +
p
I
R1
R2
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