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參數資料
| 型號： | SPX1581T-2.8 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| 中文描述： | 5A條超低壓降穩(wěn)壓器快速響應，可調 |
| 文件頁數： | 4/7頁 |
| 文件大小： | 81K |
| 代理商： | SPX1581T-2.8 |
4
Date 5/25/04
SPX1581 5A Ultra Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
Adjustable Regulator Design
1.25V reference voltage is being developed be-
tween the SENSE pin and the ADJ pin of the
SPX1581. Adding two external resistors (see fig
1.) will allow setting the output voltage from
1.25V to 6V. R
1
is chosen so that this current is
specified minimum load current of 10mA. R
2
is
given by the formula: V
OUT
= V
REF
(1+ R
2
/R
1
)
+ I
ADJ
(R
2
). The current flowing from the ADJ
pin is typicaly 50
μ
A. This ADJ pin contributes
to the final V
OUT
but is usually neglected.
Connecting the sense pin to the top of the resis-
tor divider will improve load regualtion.
Lowering Noise
Using the SENSE pin to Kelvin the load will
increase accuracy of the output voltage during
load regulation. For the fixed voltage device,
adding a capacitor at the GND pin will improve
transient response. This capacitor is chosen in
the range of 1
μ
F to 0.1
μ
F and will depend on the
amount of output capacitance in the system.
APPLICATION NOTES: Continued
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相關代理商/技術參數 |
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|---|---|
| SPX1581T-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1581T5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1581T5/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1581T5-2.5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
| SPX1581T5-2.5/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed |
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