as2815yu-x ETC-unknow, as2815yu-x Datasheet - Page 4

• Manufacturer Part Number: as2815yu-x
• Description: 1.5a Dropout Voltage Regulator Adjustable Fixed Output,fast Response
• Manufacturer: ETC-unknow

Basic Adjustable Regulator
Output Voltage
Consider Figure 2. The resistance R
current flow, normally the specified load current of 10mA.
This current will go through the resistance R
output voltage. The current I
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
and not to the load. For the same reason, it is best to connect
the resistor R
V
V
OUT
OUT
2
1
to the Negative side of the load.
resistance from the resistor divider to the case,
V
Fig.2 Basic Adjustable Regulator
OUT
= V
Fig.3 Basic Adjustable Regulator
REF
50µA
I
* ( 1 + R
AS2815
ADJ
AS2815
ADJ
2
/R
1
) + I
is very small and constant.
ADJ
R
1
P
Resistance
Parasitic Line
* R
generates a constant
V
2
REF
2
R
to set the overall
R
2
Case of Regulator
1
Connect R
R
1
R
to
1
2
V
OUT
R
Connect R
L
2
to Load
Output Voltage
The fixed voltage LDO voltage regulators are simple to use
regulators since the V
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.
V
5V
IN
10uF
C1
Basic Fixed Regulator
OUT
is preset to the specifications. It is
AS2815
Rev.10/11/00
AS2815
10uF
V
3.3V
C1
OUT