APL1087R-18DC-TU ANPEC [Anpec Electronics Coropration], APL1087R-18DC-TU Datasheet - Page 4

• Manufacturer Part Number: APL1087R-18DC-TU
• Description: 800mA Low Dropout Fast Response Positive Adjustable Regulator and Fixed 1.8V, 2.5V and 3.3V
• Manufacturer: ANPEC [Anpec Electronics Coropration]

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.
TTL
V
V
IN
IN
1.25V to 7.15V Adjustable Regulator
* Needed if device is far from filter capacitors
+
+
5V Regulator with Shutdown
V
OUT
C
1k
IN
*
1
F
F
A P L108 7R
A D J
1.250V
IN
A P L1087R
1k
O U T
R 2
A D J
O UT
12 1
R1
R 1
R1
R2
121
365
1%
1%
+
+
C
*
2
V
5V
F
O U T
F
* C
V
X
equal to R1 at ripple frequency
IN
C
3
improves ripple rejection.
should be approximately
F
+
IN
Improving Ripple Rejection
APL1087R
ADJ
OUT
R2
R1
+
C
*
3
F
150 F
V
OUT