General Description

The

LR1084 is a series of low dropout positive voltage

regulators with a maximum dropout of 1.5V at 5A of

load current.

The series features on-chip thermal limiting which pro-

vides protection against any combination of overload

and ambient temperatures that would create excessive

junction temperatures. It also includes a trimmed band-

gap reference and a current limiting circuit.

The

LR1084 is available in 1.5V, 1.8V, 2.5V, 2.85V,

3.3V and 5.0Vversions. The fixed versions integrate

the adjust resistors. It is also available in an adjustable

version which can set the output voltage with two

external resistors.

The

LR1084 series is available in standard packages of

TO-263-2L, TO-263-3L, TO-220 and TO-252.

Features

Low Dropout Voltage: 1.3V Typically at 5A

Current Limiting and Thermal Protection

Output Current: 5A

Current Limit: 6.5A

Operating Junction Temperature Range: 0 to

Line Regulation: 0.015% (Typical)

Load Regulation: 0.2% (Typical)

Applications

High Efficiency Linear Regulators

Battery Chargers

Post Regulation for Switching Supply

Microprocessor Supply

Desktop PCs, RISC and Embedded Processors'

Supply

TO-252

TO-220

TO-263-3L

TO-263-2L

LESHAN RADIO COMPANY, LTD.

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Figure 1. Package Types of LR1084

LR1084