LM1084IS-3.3+ National Semiconductor, LM1084IS-3.3+ Datasheet
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LM1084IS-3.3+
Manufacturer Part Number
LM1084IS-3.3+
Description
Manufacturer
National Semiconductor
Datasheet
1.LM1084ITADJNOPB.pdf
(13 pages)
Specifications of LM1084IS-3.3+
Notes
NEW
Date_code
10+
© 2005 National Semiconductor Corporation
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.
Connection Diagrams
Basic Functional Diagram, Adjustable Version
Top View
Top View
TO-220
TO-263
10094635
10094636
DS100946
10094665
Features
n Available in 3.3V, 5.0V, 12V and Adjustable Versions
n Current Limiting and Thermal Protection
n Output Current
n Industrial Temperature Range
n Line Regulation
n Load Regulation
Applications
n Post Regulator for Switching DC/DC Conveter
n High Efficiency Linear Regulators
n Battery Charger
1.2V to 15V Adjustable Regulator
Application Circuit
0.015% (typical)
−40˚C to 125˚C
10094652
0.1% (typical)
www.national.com
June 2005
5A