LM1086ISX-3.3 National Semiconductor, LM1086ISX-3.3 Datasheet

LM1086ISX-3.3

Manufacturer Part Number

LM1086ISX-3.3

Description

IC,VOLT REGULATOR,FIXED,+3.3V,BIPOLAR,SIP,3PIN,PLASTIC

Manufacturer

National Semiconductor

Datasheets

1.LM1086ISX-ADJ.pdf (15 pages)

2.LM1086ISX-3.3.pdf (15 pages)

3.LM1086ISX-ADJ.pdf (15 pages)

Specifications of LM1086ISX-3.3

Rohs Compliant

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Meier Automation Equipment Co., Limited

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LM1086

1.5A Low Dropout Positive Regulators

General Description

The LM1086 is a series of low dropout positive voltage

regulators with a maximum dropout of 1.5V at 1.5A of load

current. It has the same pin-out as National Semiconductor’s

industry standard LM317.

The LM1086 is available in an adjustable version, which can

set the output voltage with only two external resistors. It is

also available in six fixed voltages: 1.8V, 2.5V, 2.85V, 3.3V,

3.45V and 5.0V. The fixed versions integrate the adjust

resistors.

The LM1086 circuit includes a zener trimmed bandgap ref-

erence, current limiting and thermal shutdown.

The LM1086 series is available in TO-220, TO-263, and LLP

packages. Refer to the LM1084 for the 5A version, and the

LM1085 for the 3A version.

Connection Diagrams

Basic Functional Diagram, Adjustable Version

Top View

TO-220

10094802

DS100948

10094865

Top View

TO-263

Features

n Available in 1.8V, 2.5V, 2.85V, 3.3V, 3.45V, 5V and

n Current Limiting and Thermal Protection

n Output Current

n Line Regulation

n Load Regulation

Applications

n SCSI-2 Active Terminator

n High Efficiency Linear Regulators

n Battery Charger

n Post Regulation for Switching Supplies

n Constant Current Regulator

n Microprocessor Supply

Adjustable Versions

10094804

1.2V to 15V Adjustable Regulator

Application Circuit

Pins 6, 7, and 8 must be tied together.

Top View

LLP

0.015% (typical)

10094852

0.1% (typical)

www.national.com

June 2005

10094866

1.5A

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