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AS1363 데이터시트(PDF) 9 Page - ams AG

부품명 AS1363
상세설명  1A Low Dropout Linear Voltage Regulator
PDF  19 Pages
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제조업체  AMSCO [ams AG]
홈페이지  http://www.ams.com
Logo AMSCO - ams AG

AS1363 데이터시트(HTML) 9 Page - ams AG

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Revision 1.9
9 - 19
AS1363
Datasheet - Detailed Descr i p ti on
8.2 Output Voltage Selection
The AS1363 is available in two versions (see Ordering Information on page 18). One version can only operate at one fixed output voltage and
the other version can operate with a preset output voltage or with user-adjustable output voltages (1.2V to 5.3V).

For the fixed output voltage version connect a capacitor CBYP from pin BYP to VOUT to improve PSRR and Noise performance
(see Figure 16).

To use the factory preset output voltage of the user-adjustable output voltage version, connect pin SET to GND (see Figure 17).

For configurations using an output voltage other than the factory preset, a voltage-divider from OUT to SET to GND is required, as shown in
(see Figure on page 1). A value for R2 in the 25k
 to 100k range should be sufficient. Calculate the value for R1 as:
(EQ 1)
Where:
VOUT is in a range from 1.2V to 5.3V.
VSET/BYP = 1.2V.
Figure 16. Fixed Output Voltage
Figure 17. Adjustable Output using preset Output Voltage
R
1
R
2
V
OUT
V
SETBYP
---------------------
1
–


=
AS1363
COUT
2.2µF
1
IN
6
OUT
3
EN
5
BYP
2
POK
RPOK
100k
CIN
1µF
VIN
2.0V to 5.5V
VOUT
1.2V to 5.0V
To Controller
4
GND
On
Off
CBYP
10nF
AS1363-AD
COUT
2.2µF
1
IN
6
OUT
3
EN
5
SET
2
POK
RPOK
100k
CIN
1µF
VIN
2.5V to 5.5V
VOUT
2.5V
To Controller
4
GND
On
Off



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