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參數資料
| 型號： | AS2850U |
| 元件分類： | 可調正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 1.2 V-ADJUSTABLE POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSFM3 |
| 封裝： | TO-220, 3 PIN |
| 文件頁數： | 4/6頁 |
| 文件大?。?/td> | 159K |
| 代理商： | AS2850U |
Rev. 10/11/00
AS2850
Basic Adjustable Regulator
Output Voltage
Consider Figure 2. The resistance R1 generates a constant
current flow, normally the specified load current of 10mA.
This current will go through the resistance R2 to set the overall
output voltage. The current IADJ 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 R1 resistance from the resistor divider to the case,
and not to the load. For the same reason, it is best to connect
the resistor R2 to the Negative side of the load.
Output Voltage
The fixed voltage LDO voltage regulators are simple to use
regulators since the VOUT 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.
AS2850
Fig.2 Basic Adjustable Regulator
V
REF
R1
R
2
V
OUT = VREF * ( 1 + R2/R1) + IADJ * R2
I
ADJ
V
IN
V
OUT
50uA
AS2850
Fig.3 Basic Adjustable Regulator
V
IN
R2
R1
Connect R
2 to Load
RL
Connect R
1 to
Case of Regulator
R
P Parasitic Line
Resistance
V
OUT
ADJ
AS2850
Basic Fixed Regulator
V
IN
V
OUT
5V
C1
10uF
C2
10uF
3.3V
相關PDF資料 |
PDF描述 |
|---|---|
| AS2850AT-1.5 | 1.5 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSSO2 |
| AS2850AT-3.3 | 3.3 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSSO2 |
| AS2850AT-5.0 | 5 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSSO2 |
| AS2850AU-2.5 | 2.5 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSFM3 |
| AS2850AU-3.3 | 3.3 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSFM3 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AS2850U-1.5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Analog IC |
| AS2850U-2.5 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Analog IC |
| AS2850U-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Analog IC |
| AS2850U-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Analog IC |
| AS2850YT-X | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response |
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