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參數(shù)資料
| 型號(hào)： | SPX4040A3M-5.0 |
| 英文描述： | Precision Micropower 2.5V Shunt Voltage Reference |
| 中文描述： | 精密微功耗電壓參考為2.5V并聯(lián) |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 154K |
| 代理商： | SPX4040A3M-5.0 |
Rev. 10/25/00
SPX4040
SPX4040 Applications Hints
This device is designed for stable operation and has no need
of an external capacitor between pin 4 and 8. The reference
remains stable if a bypass capacitor is used.
SOT-23
The SPX4040 in the SOT-23 package has a parasitic
Schottky diode between pin 3 and pin 1. Pin 1 of SOT-23
must float or be connected to pin 3.
Conventional Shunt Regulator
In a conventional shunt regulator application (see Figure 1),
an external series resister (R
S
) is connected between the
supply voltage and the SPX4040. R
S
determines the current
that flows through the load (I
L
) and the reference(I
Q
). Since
load current and supply voltage may vary, R
S
should be small
enough to supply at least the minimum acceptable I
Q
to the
reference even when the supply voltage is at its minimum and
the load current is at its maximum value. When the supply
voltage is at its maximum and I
L
is at its minimum, R
S
should
be large enough so that the current flowing through the
SPX4040 is less than 15mA
R
S
is determined by the supply voltage (V
S
), the load and
operating current (I
L
and I
Q
), reference’s reverse breakdown
voltage (V
R
).
R
S
= (V
S
- V
R
)/(I
L
+I
Q
)
Figure 1. SPX4040 Fixed
Shunt Regulator Application
V
S
R
S
V
R
I
L
I
Q
I
O
+ I
L
V
O
SPX4040
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPX4040B3M-5.0 | Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040 | Precision Micropower 2.5V Shunt Voltage Reference(機(jī)密,微功耗,2.5V分流電壓基準(zhǔn)) |
| SPX4040B2S-2.5 | Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040B2S-5.0 | Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040B3S-2.5 | Precision Micropower 2.5V Shunt Voltage Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPX4040A3N-2.5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040A3N-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040A3S-2.5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040A3S-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Precision Micropower 2.5V Shunt Voltage Reference |
| SPX4040AM-2.5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Precision Micropower 2.5V ShuntVoltage Reference |
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