參數(shù)資料
型號: SPX1085R-5.0
元件分類: 基準電壓源/電流源
英文描述: 3A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response
中文描述: 第3A低壓差線性穩(wěn)壓器可調(diào)節(jié)
文件頁數(shù): 4/7頁
文件大?。?/td> 195K
代理商: SPX1085R-5.0
Rev. 10/30/00
SPX1085
Basic Adjustable Regulator
Output Voltage
Consider Figure 2. The resistance R
1
generates a constant current flow, normally the specified load current of 10mA. This current will
go through the resistance R
2
to set the overall output voltage. The current I
ADJ
is very small and constant. Therefore its contribution to
the overall output voltage is very small and can generally be ignored
Load Regulation
Parasitic line resistance can degrade load regulation. In order not to affect the behavior of the regulator, it is best to connect directly
the R
1
resistance from the resistor divider to the case, and not to the load. For the same reason, it is best to connect the resistor R
2
to
the Negative side of the load.
R
P
Parasitic Line
Resistance
SPX1085
Fig.2 Basic Adjustable Regulator
V
OUT
V
IN
V
REF
R
1
R
2
V
OUT
= V
REF
* ( 1 + R
2
/R
1
) + I
ADJ
* R
2
I
ADJ
50μA
SPX1085
Fig.3 Basic Adjustable Regulator
V
IN
R
2
R
1
Connect R
2
to Load
R
L
Connect R
to
Case of Regulator
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SPX1085 3A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response(3A,低壓差穩(wěn)壓器(可調(diào)和固定輸出,快速響應(yīng)))
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