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參數(shù)資料
| 型號： | AS2815YU-X |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1.5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response |
| 中文描述： | 1.5A的低壓差線性穩(wěn)壓器可調(diào)節(jié) |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 190K |
| 代理商： | AS2815YU-X |
Rev.10/11/00
AS2815
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.
Output Voltage
The fixed voltage LDO voltage regulators are simple to use
regulators since the V
OUT
is preset to the specifications. It is
important however, to provide the proper output capacitance
for stability and improvement. For most operating conditions
a capacitance of 22uF tantalum or 100uF electrolytic will
ensure stability and prevent oscillation.
AS2815
Fig.2 Basic Adjustable Regulator
V
OUT
V
OUT
V
REF
R
1
R
2
V
OUT
= V
REF
* ( 1 + R
2
/R
1
) + I
ADJ
* R
2
I
ADJ
50μA
AS2815
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
AS2815
Basic Fixed Regulator
V
IN
5V
V
OUT
3.3V
C1
10uF
C1
10uF
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| AS28200HLF | 制造商:TT Electronics / IRC 功能描述:AS28200HLF |
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