LM1085_16 Datasheet, PDF (1/29 Pages) Texas Instruments – 3-A Low Dropout Positive Regulators

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM1085
SNVS038H – JULY 1999 – REVISED JANUARY 2015
LM1085 3-A Low Dropout Positive Regulators
1 Features
•1 Available in 3.3-V, 5.0-V, 12-V and Adjustable
Versions
• Current Limiting and Thermal Protection
• Output Current 3 A
• Line Regulation 0.015% (typical)
• Load Regulation 0.1% (typical)
2 Applications
• High Efficiency Linear Regulators
• Battery Charger
• Post Regulation for Switching Supplies
• Constant Current Regulator
• Microprocessor Supply
3 Description
The LM1085 is a regulator with a maximum dropout
of 1.5 V at 3 A of load current. It has the same pin-
out as TI's industry standard LM317.
Two resistors are required to set the output voltage of
the adjustable output voltage version of the LM1085.
Fixed output voltage versions integrate the adjust
resistors.
The LM1085 circuit includes a zener trimmed
bandgap reference, current limiting and thermal
shutdown.
Refer to the LM1084 for the 5A version, and the
LM1086 for the 1.5A version.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM1085
DDPAK/TO-263 (3) 10.18 mm × 8.41 mm
TO-220 (3)
14.986 mm × 10.16 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.