LT3081

RECOMMENDED FOR NEW DESIGNS

1.5A Single Resistor Rugged Linear Regulator with Monitors

Data Sheet Product Selection Table

Part Models: 21
1ku List Price: Starting From $3.14

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Part Details

Extended Safe Operating Area
Maximum Output Current: 1.5A
Stable with or without Input/Output Capacitors
Wide Input Voltage Range: 1.2V to 36V
Single Resistor Sets Output Voltage
Output Current Monitor: I_MON = I_OUT/5000
Junction Temperature Monitor: 1μA/°C
Output Adjustable to 0V
50μA SET Pin Current: 1% Initial Accuracy
Output Voltage Noise: 27μV_RMS
Parallel Multiple Devices for Higher Current or Heat Spreading
Programmable Current Limit
Reverse-Battery and Reverse-Current Protection
<1mV Load Regulation Typical Independent of V_OUT
<0.001%/V Line Regulation Typical
Available in Thermally-Enhanced 12-Lead 4mm × 4mm DFN and 16-Lead TSSOP, 7-Lead DD-Pak and 7-Lead TO-220

Part Models: 21
1ku List Price: Starting From $3.14

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT3081EDF#PBF	12-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081EDF#TRPBF	12-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081EFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081EFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081ER#PBF	7-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081ER#TRPBF	7-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081ET7#06PBF	7-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081ET7#PBF	7-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081HFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081HFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081HT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IDF#PBF	12-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IDF#TRPBF	12-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IR#PBF	7-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IR#TRPBF	7-Lead DD Pak	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081IT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081MPFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081MPFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3081MPT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LT3081EFE#PBF	PRODUCTION
LT3081EFE#TRPBF	PRODUCTION
LT3081HFE#PBF	PRODUCTION
LT3081HFE#TRPBF	PRODUCTION
LT3081IFE#PBF	PRODUCTION
LT3081IFE#TRPBF	PRODUCTION
LT3081MPFE#PBF	PRODUCTION
LT3081MPFE#TRPBF	PRODUCTION
Aug 10, 2022 - 22_0175 Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark
		PCN22_0175_Form Material_Report Delta Qualification Matrix
LT3081ER#PBF	PRODUCTION
LT3081ER#TRPBF	PRODUCTION
LT3081ET7#06PBF	PRODUCTION
LT3081ET7#PBF	PRODUCTION
LT3081HT7#PBF	PRODUCTION
LT3081IR#PBF	PRODUCTION
LT3081IR#TRPBF	PRODUCTION
LT3081IT7#PBF	PRODUCTION
LT3081MPT7#PBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
PowerPath, Ideal Diodes, and Load Switches 1
LTC4370	RECOMMENDED FOR NEW DESIGNS	Two-Supply Diode-OR Current Balancing Controller
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363	RECOMMENDED FOR NEW DESIGNS	High Voltage Surge Stopper with Current Limit

Parts	Product Life Cycle	Description
LT3080	RECOMMENDED FOR NEW DESIGNS	Adjustable 1.1A Single Resistor Low Dropout Regulator

Tools & Simulations

LTspice 4

Models for the following parts are available in LTspice:

LT3081

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LT3081EFE Demo Board | Single Resistor Rugged Linear Regulator with Monitors, 2.8V ≤ VIN ≤ 36V, VOUT = 1.2V/1.5V/1.8V/2.5V/3.3V/5V/12V @ 1.5A

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Product Details

DC1870A is a 1.5A low dropout linear regulator featuring the LT3081. The device is designed for rugged industrial applications and can be paralleled for higher output current or heat spreading. Besides paralleling, the LT3081 also presents other features including adjustability to zero V_OUT, reverse protection for input and output-to-input voltages, temperature monitor, output current monitor, etc. A key feature of the LT3081 is the extended safe operating area (SOA). With the precision zero TC 50μA reference current source, a single resistor programs the output voltage to any level between zero and 34.5V. Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and thermal limiting.

Resources

DC1870A - Schematic
70.00K

DC1870A - Demo Manual
281.00K

DC1870A - Design Files
2.00M

24V 3A Constant Voltage, Constant Current Bench Supply Featuring LT3081, LT8612, LT3092

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Product Details

DC2132A is a 24V 3A constant voltage, constant current bench supply. It regulates any output voltage from 0V to 24V and any output current from 0A to 3A. It runs from 10V to 40V input although the output voltage should remain 5V or more below the input voltage.