Positive Regulators. LM1084 Datasheet

LM1084 Datasheet PDF


Part Number

LM1084

Description

5A Low Dropout Positive Regulators

Manufacture

National Semiconductor

Total Page 13 Pages
Datasheet
Download LM1084 Datasheet


LM1084
June 2005
LM1084
5A Low Dropout Positive Regulators
General Description
The LM1084 is a series of low dropout voltage positive
regulators with a maximum dropout of 1.5V at 5A of load
current. It has the same pin-out as National Semiconductor’s
industry standard LM317.
The LM1084 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 intergrate the adjust resistors.
The LM1084 circuit includes a zener trimmed bandgap ref-
erence, current limiting and thermal shutdown.
The LM1084 series is available in TO-220 and TO-263 pack-
ages. Refer to the LM1085 for the 3A version, and the
LM1086 for the 1.5A version.
Features
n Available in 3.3V, 5.0V, 12V and Adjustable Versions
n Current Limiting and Thermal Protection
n Output Current
5A
n Industrial Temperature Range
−40˚C to 125˚C
n Line Regulation
0.015% (typical)
n Load Regulation
0.1% (typical)
Applications
n Post Regulator for Switching DC/DC Conveter
n High Efficiency Linear Regulators
n Battery Charger
Connection Diagrams
TO-220
Application Circuit
Top View
10094636
TO-263
10094635
Top View
Basic Functional Diagram, Adjustable Version
10094652
1.2V to 15V Adjustable Regulator
10094665
© 2005 National Semiconductor Corporation DS100946
www.national.com

LM1084
Ordering Information
Package
3-lead TO-263
Temperature Range
−40˚C to +125˚C
3-lead TO-220
−40˚C to + 125˚C
Simplified Schematic
Part Number
LM1084IS-ADJ
LM1084ISX-ADJ
LM1084IS-12
LM1084ISX-12
LM1084IS-3.3
LM1084ISX-3.3
LM1084IS-5.0
LM1084ISX-5.0
LM1084IT-ADJ
LM1084IT-12
LM1084IT-3.3
LM1084IT-5.0
Transport Media
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Rails
Rails
Rails
NSC Drawing
TS3B
T03B
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10094634





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