LM1085IS-3.3 National Semiconductor, LM1085IS-3.3 Datasheet

LM1085IS-3.3

Manufacturer Part Number

LM1085IS-3.3

Description

Linear Voltage Regulator IC

Manufacturer

National Semiconductor

Datasheets

1.LM1085ISX-5.0.pdf (13 pages)

2.LM1085ISX-5.0.pdf (13 pages)

3.LM1085ISX-5.0.pdf (13 pages)

Specifications of LM1085IS-3.3

No. Of Pins

Output Current

Termination Type

SMD

Mounting Type

Through Hole

Voltage Regulator Type

LDO Linear

Peak Reflow Compatible (260 C)

Current Rating

Output Voltage Max

3.3V

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

LM1085IS-3.3

Manufacturer:

Quantity:

1 000

Company:

HardFindElectronics Ltd

Part Number:

LM1085IS-3.3

Manufacturer:

TI/NS

Quantity:

12 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

LM1085IS-3.3

Manufacturer:

NS/TI

Quantity:

20 000

Company:

Amily Shenzhen XNWY Technology Co., Ltd

Part Number:

LM1085IS-3.3

Company:

Meier Automation Equipment Co., Limited

Part Number:

LM1085IS-3.3/NOPB

Manufacturer:

NS/国半

Quantity:

20 000

Current page: 1 of 13
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LM1085

3A Low Dropout Positive Regulators

General Description

The LM1085 is a series of low dropout positive voltage

regulators with a maximum dropout of 1.5V at 3A of load

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

industry standard LM317.

The LM1085 is available in an adjustable version, which can

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

also available in three fixed voltages: 3.3V, 5.0V and 12.0V.

The fixed versions integrate the adjust resistors.

The LM1085 circuit includes a zener trimmed bandgap ref-

erence, current limiting and thermal shutdown.

The LM1085 series is available in TO-220 and TO-263 pack-

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

LM1086 for the 1.5A version.

Connection Diagrams

Basic Functional Diagram,

Adjustable Version

Top View

TO-220

TO-263

10094704

DS100947

10094702

10094765

Features

n Available in 3.3V, 5.0V, 12V and Adjustable Versions

n Current Limiting and Thermal Protection

n Output Current

n Line Regulation

n Load Regulation

Applications

n High Efficiency Linear Regulators

n Battery Charger

n Post Regulation for Switching Supplies

n Constant Current Regulator

n Microprocessor Supply

1.2V to 15V Adjustable Regulator

Application Circuit

0.015% (typical)

10094752

0.1% (typical)

www.national.com

June 2005

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