SNVS039H – JUNE 2000 – REVISED MAY 2013
LM1086 1.5A Low Dropout Positive Regulators
Check for Samples:
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FEATURES
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Available in 1.8V, 2.5V, 2.85V, 3.3V, 3.45V, 5V
and Adjustable Versions
Current Limiting and Thermal Protection
Output Current 1.5A
Line Regulation 0.015% (typical)
Load Regulation 0.1% (typical)
DESCRIPTION
The LM1086 is a series of low dropout positive
voltage regulators with a maximum dropout of 1.5V at
1.5A of load current. It has the same pin-out as TI's
industry standard LM317.
The LM1086 is available in an adjustable version,
which can set the output voltage with only two
external resistors. It is also available in six fixed
voltages: 1.8V, 2.5V, 2.85V, 3.3V, 3.45V and 5.0V.
The fixed versions integrate the adjust resistors.
The LM1086 circuit includes a zener trimmed
bandgap reference, current limiting and thermal
shutdown.
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APPLICATIONS
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SCSI-2 Active Terminator
High Efficiency Linear Regulators
Battery Charger
Post Regulation for Switching Supplies
Constant Current Regulator
Microprocessor Supply
Connection Diagram
ADJ/GND
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8
V
OUT
V
IN
N/C
2
V
OUT
3
7
V
OUT
V
OUT
6
N/C
4
5
N/C
Pins 6, 7, and 8 must be tied together.
Figure 1. TO-220
Top View
Figure 2. DDPAK/TO-263
Top View
Figure 3. WSON
Top View
Figure 4. Basic Functional Diagram,
Adjustable Version
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Figure 5. Application Circuit
1.2V to 15V Adjustable Regulator
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Copyright © 2000–2013, Texas Instruments Incorporated
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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