LM1084 Datasheet, PDF (1/22 Pages) National Semiconductor (TI) – 5A Low Dropout Positive Regulators

LM1084
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SNVS037F – SEPTEMBER 1999 – REVISED MARCH 2013
LM1084 5A Low Dropout Positive Regulators
Check for Samples: LM1084
FEATURES
1
•2 Available in 3.3V, 5.0V, 12V and Adjustable
Versions
• Current Limiting and Thermal Protection
• Output Current 5A
• Industrial Temperature Range −40°C to 125°C
• Line Regulation 0.015% (typical)
• Load Regulation 0.1% (typical)
APPLICATIONS
• Post Regulator for Switching DC/DC Conveter
• High Efficiency Linear Regulators
• Battery Charger
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 TI'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 reference, current limiting and thermal
shutdown.
Connection Diagram
Figure 1. TO-220 Top View
Figure 2. DDPAK/TO-263 Top View
Figure 3. Basic Functional Diagram, Adjustable
Version
Figure 4. Application Circuit
1.2V to 15V Adjustable Regulator
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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