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Teilenummer | LM1084 |
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Beschreibung | 5A Low Dropout Positive Regulators | |
Hersteller | National Semiconductor | |
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Gesamt 13 Seiten August 2002
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
© 2002 National Semiconductor Corporation DS100946
www.national.com
Typical Performance Characteristics (Continued)
Adjust Pin Current
LM1084-ADJ Load Transient Response
10094626
LM1084-ADJ LineTransient Response
10094669
Maximum Power Dissipation
10094670
10094668
www.national.com
6
6 Page Physical Dimensions inches (millimeters)
unless otherwise noted
3-Lead TO-263
NS Package Number TS3B
www.national.com
12
12 Page | ||
Seiten | Gesamt 13 Seiten | |
PDF Download | [ LM1084 Schematic.PDF ] |
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