Copyright

© ANPEC Electronics Corp.

Rev. A.8 - Dec., 2008

APL1086

www.anpec.com.tw

1

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.

1.5A Low Dropout Fast Response Positive Adjustable Regulator and Fixed

1.8V, 2.5V, 2.85V, and 3.3V

•

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

•

Current Limit : 1.5A Min. at T

•

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)

Features

Applications

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

o ve r l o a d t h a t wo u l d c r e a t e e xc e s s i ve j u n c t i o n

temperatures.

The APL1086 is available in the industry standard 3-pin

SOT-223, TO-252, TO-220, or TO-263 power packages.

•

Active SCSI Terminators

•

Low Voltage Logic Supplies

•

Battery-Powered Circuitry

•

Post Regulator for Switching Power Supply

Simplified Application Circuits

* C1 improves ripple rejection.

X

equal to R1 at ripple frequency

* Needed if device is far from filter capacitors

R1

R2

R1

1.250V

+

×

=

V

IN

10

µ F

C

1*

V

OUT1

+

R1

R2

1k

APL1086

OUT

IN

ADJ

+

100

µ F

C

2

121

Ω

1.25V to 10.7V Adjustable Regulator

V

IN

10

µ F

APL1086

OUT

IN

ADJ

121

Ω

365

Ω

1%

1%

V

OUT

150

µ F

10

µ F

C1

R1

R2

+

+

Improving Ripple Rejection

V

IN

10

µ F

APL1086

OUT

IN

ADJ

TTL

121

Ω

365

Ω

1%

1%

+

1k

1k

100

µ F

5V

+

5V Regulator with Shutdown