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參數(shù)資料
| 型號(hào)： | B1587 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 4.0A Low Dropout Voltage Regulator Adjustable & Fix Output |
| 中文描述： | 4.0a上低壓差線性穩(wěn)壓器可調(diào)節(jié) |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 111K |
| 代理商： | B1587 |
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
B1587
Basic Adjustable Regulator
Output Voltage Output Voltage
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.
BAY
B1587
Fig.2 Basic Adjustable Regulator
V
OU
T
V
OU
T
V
REF
R
1
R
2
V
OUT
= V
REF
* ( 1 + R
2
/R
1
) + I
ADJ
* R
2
I
ADJ
50μA
BAY
B1587
Fig.3 Basic Adjustable Regulator
V
OUT
R
2
R
1
Connect R
2
to Load
R
L
Connect R
to
Case of Regulator
R
P
Parasitic Line
Resistance
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