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APL1087R Datasheet(PDF) 4 Page - Anpec Electronics Coropration

Part No. APL1087R
Description  800mA Low Dropout Fast Response Positive Adjustable Regulator and Fixed 1.8V, 2.5V and 3.3V
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Maker  ANPEC [Anpec Electronics Coropration]
Homepage  http://www.anpec.com.tw
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APL1087R Datasheet(HTML) 4 Page - Anpec Electronics Coropration

 
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Copyright  ANPEC Electronics Corp.
Rev. A.2 - Apr., 2003
APL1087R
www.anpec.com.tw
4
V
IN
10µ F
APL1087R
OUT
IN
ADJ
V
OUT
150
µ F
10µ F
C
R1
R2
+
+
*
3
Application Circuits
* Needed if device is far from filter capacitors
1.25V to 7.15V Adjustable Regulator
Improving Ripple Rejection
R1
R2
R1
1.250V
VOUT
+
×
=
V
IN
10µ F
A P L1087R
OU T
IN
AD J
TTL
121
365
1%
1%
+
1k
1k
100µ F
5V
+
5V Regulator with Shutdown
V
IN
10 µ F
C
1
V
OU T
+
R1
R2
A P L108 7R
OUT
IN
AD J
+
10 0µ F
C
2
12 1
*
*
* C3 improves ripple rejection.
XC should be approximately
equal to R1 at ripple frequency
Electrical Characteristics (Cont.)
Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Load line regulations are mea-
sured at a constant junction temperature by low duty cycle pulse testing.
Note 2: Dropout voltage is specified over the full output current range of the device. Dropout voltage is defined as the minimum input/
output differential measured at the specified output current. Test points and limits are also shown on the Dropout Voltage curve.
Note 3: Minimum load current is defined as the minimum output current required to maintain regulation.


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