APL1086_08 Datasheet, PDF (1/15 Pages) Anpec Electronics Coropration – 1.5A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 1.8V, 2.5V, 2.85V, and 3.3V

APL1086
1.5A Low Dropout Fast Response Positive Adjustable Regulator and Fixed
1.8V, 2.5V, 2.85V, and 3.3V
Features
• Guaranteed Output Voltage Accuracy within 2%
• Fast Transient Response
• Guaranteed Dropout Voltage at Multiple Currents
• Load Regulation : 0.1% Typ.
• Line Regulation : 0.03% Typ.
• Low Dropout Voltage : 1.3V Typ. at I_OUT =1.5A
• Current Limit : 1.5A Min. at T_J=125 °C
• On-Chip Thermal Limiting : 150 °C Typ.
• Adjustable Output : 1.25~10.7V
• Standard 3-pin SOT-223, TO-252 , TO-220, and
TO-263 Power Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
Simplified Application Circuits
1.25V to 10.7V Adjustable Regulator
APL1086
V_IN
IN
OUT
ADJ
R1
121Ω
+
10µ F
C_1*
R2
1k
V_OUT1
+
100µ F
C₂
* Needed if device is far from filter capacitors
V OUT = 1.250V × ^{R1 + R2}
R1
5V Regulator with Shutdown
APL1086
V_IN
IN
OUT
ADJ
+
10µ F
1k
TTL
1k
121Ω
1%
+
365Ω
1%
5V
100µ F
Improving Ripple Rejection
V_IN
+
10µ F
APL1086
IN
OUT
ADJ
R2
365Ω
1%
* C1 improves ripple rejection.
X_C should be approximately
equal to R1 at ripple frequency
R1
121Ω
1%
+ ^C1
10µ F
V_OUT
150µ F
General Description
The APL1086 is a low dropout three-terminal adjustable
regulators with 1.5A output current capability. In order to
obtain lower dropout voltage and faster transient
response, which is critical for low voltage applications,
the APL1086 has been optimized.
The device is available in an adjustable version and fixed
output voltages of 1.8V, 2.5V, 2.85V, and 3.3V, the output
available voltage range is from 1.25 to 10.7V with an input
supply below 12V. Dropout voltage is guaranteed at a
maximum of 1.45V at 1.5A.
Current limit is trimmed to ensure specified output cur-
rent and controlled short-circuit current. On-chip thermal
limiting provides protection against any combination of
overload that would create excessive junction
temperatures.
The APL1086 is available in the industry standard 3-pin
SOT-223, TO-252, TO-220, or TO-263 power packages.
Applications
• Active SCSI Terminators
• Low Voltage Logic Supplies
• Battery-Powered Circuitry
• Post Regulator for Switching Power Supply
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.8 - Dec., 2008
www.anpec.com.tw