LT3050

RECOMMENDED FOR NEW DESIGNS

100mA, Linear Regulator with Precision Current Limit and Diagnostic Outputs

Data Sheet Product Selection Table

Part Models: 30
1ku List Price: Starting From $1.88

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Part Details

Output Current Monitor: 1/100^th of I_OUT
Fault Indicator: Current Limit, Minimum I_OUT or Thermal Limit
Output Current: 100mA
Dropout Voltage: 340mV
Input Voltage Range: 1.6V to 45V
Programmable Precision Current Limit: ±5%
Programmable Minimum I_OUT Monitor
Low Noise: 30μV_RMS (10Hz to 100kHz)
Adjustable Output (V_REF = V_OUT(MIN) = 0.6V)
Fixed Output Voltages: 3.3V, 5V
Output Tolerance: ±2% Over Line, Load and Temperature
Stable with Low ESR, Ceramic Output Capacitors (2.2μF minimum)
Shutdown Current: <1μA
Reverse-Battery, Reverse-Output and Reverse-Current Protection
Thermal Limit Protection
12-Lead 3mm × 2mm DFN and MSOP Packages

Part Models: 30
1ku List Price: Starting From $1.88

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
LT3050EDDB#TRMPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EDDB#TRPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EDDB-3.3#TRMPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EDDB-3.3#TRPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EDDB-5#TRMPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EDDB-5#TRPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EMSE-3.3#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EMSE-3.3#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EMSE-5#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050EMSE-5#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IDDB#TRMPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IDDB#TRPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IDDB-3.3#TRMPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IDDB-3.3#TRPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IDDB-5#TRMPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IDDB-5#TRPBF	12-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IMSE-3.3#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IMSE-3.3#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IMSE-5#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050IMSE-5#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050MPMSE#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050MPMSE#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050MPMSE-3.3#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050MPMSE-3.3#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050MPMSE-5#PBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3050MPMSE-5#TRPBF	12-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LT3050EDDB#TRMPBF	PRODUCTION
LT3050EDDB#TRPBF	PRODUCTION
LT3050EDDB-3.3#TRMPBF	PRODUCTION
LT3050EDDB-3.3#TRPBF	PRODUCTION
LT3050EDDB-5#TRMPBF	PRODUCTION
LT3050EDDB-5#TRPBF	PRODUCTION
LT3050EMSE-3.3#PBF	PRODUCTION
LT3050EMSE-3.3#TRPBF	PRODUCTION
LT3050EMSE-5#PBF	PRODUCTION
LT3050EMSE-5#TRPBF	PRODUCTION
LT3050IDDB-3.3#TRMPBF	PRODUCTION
LT3050IDDB-3.3#TRPBF	PRODUCTION
LT3050IDDB-5#TRMPBF	PRODUCTION
LT3050IDDB-5#TRPBF	PRODUCTION
LT3050IMSE-3.3#PBF	PRODUCTION
LT3050IMSE-3.3#TRPBF	PRODUCTION
LT3050IMSE-5#PBF	PRODUCTION
LT3050IMSE-5#TRPBF	PRODUCTION
Apr 9, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LT3050EMSE#PBF	PRODUCTION
LT3050EMSE#TRPBF	PRODUCTION
LT3050IDDB#TRMPBF	PRODUCTION
LT3050IDDB#TRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT3050EMSE#PBF	PRODUCTION
LT3050EMSE#TRPBF	PRODUCTION
LT3050EMSE-3.3#PBF	PRODUCTION
LT3050EMSE-3.3#TRPBF	PRODUCTION
LT3050EMSE-5#PBF	PRODUCTION
LT3050EMSE-5#TRPBF	PRODUCTION
LT3050IMSE#PBF	PRODUCTION
LT3050IMSE#TRPBF	PRODUCTION
LT3050IMSE-3.3#PBF	PRODUCTION
LT3050IMSE-3.3#TRPBF	PRODUCTION
LT3050IMSE-5#PBF	PRODUCTION
LT3050IMSE-5#TRPBF	PRODUCTION
LT3050MPMSE#PBF	PRODUCTION
LT3050MPMSE#TRPBF	PRODUCTION
LT3050MPMSE-3.3#PBF	PRODUCTION
LT3050MPMSE-3.3#TRPBF	PRODUCTION
LT3050MPMSE-5#PBF	PRODUCTION
LT3050MPMSE-5#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LT3050EMSE#PBF	PRODUCTION
LT3050EMSE#TRPBF	PRODUCTION
LT3050EMSE-3.3#PBF	PRODUCTION
LT3050EMSE-3.3#TRPBF	PRODUCTION
LT3050EMSE-5#PBF	PRODUCTION
LT3050EMSE-5#TRPBF	PRODUCTION
LT3050IMSE#PBF	PRODUCTION
LT3050IMSE#TRPBF	PRODUCTION
LT3050IMSE-3.3#PBF	PRODUCTION
LT3050IMSE-3.3#TRPBF	PRODUCTION
LT3050IMSE-5#PBF	PRODUCTION
LT3050IMSE-5#TRPBF	PRODUCTION
LT3050MPMSE#PBF	PRODUCTION
LT3050MPMSE#TRPBF	PRODUCTION
LT3050MPMSE-3.3#PBF	PRODUCTION
LT3050MPMSE-3.3#TRPBF	PRODUCTION
LT3050MPMSE-5#PBF	PRODUCTION
LT3050MPMSE-5#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Positive Linear Regulators (LDO) 1
LT3060	RECOMMENDED FOR NEW DESIGNS	45V V_IN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator

Parts	Product Life Cycle	Description
LT3060	RECOMMENDED FOR NEW DESIGNS	45V V_IN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator

Tools & Simulations

LTspice 4

Models for the following parts are available in LTspice:

LT3050
LT3050-3.3
LT3050-5

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

LT3050EDDB Demo Board | Micropower Low Noise, Low Dropout Linear Regulator, Current Limit, Diagnostics, 2V ≤ VIN ≤ 45V, VOUT = 1.2V/1.5V/1.8V/2.5V/3.3V/5V/Adjustable at 100mA

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Product Details

Demonstration circuit 1515 is an adjustable 100mA linear regulator featuring the LT3050. The LT3050 is a micropower, low noise and low dropout voltage linear regulator. The device supplies 100mA of output current with a dropout voltage of 340mV. A 10nF bypass capacitor reduces output noise to 30μV_RMS (10Hz to 100kHz bandwidth) and soft-starts the reference. The demo board's 2V to 45V input voltage range combined with its precision current limit and diagnostic functions make the IC an ideal choice for robust, high reliability applications such as protected antenna power supplies. The jumper-selectable output voltage can be set to 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V or a user-defined voltage. The input and output pins can withstand up to ±50V and the output is short-circuit protected.

The internal current limit should be considered when the input-to-output differential is high. The LT3050's current limit can be programmed by a single resistor and is accurate to ±5% over a wide input voltage and temperature range. A single resistor programs the LT3050’s minimum output current monitor, useful for detecting open-circuit conditions. The current monitor function sources a current equal to 1/100th of output current. A logic FAULT pin asserts low if the LT3050 is in current limit, operating below its minimum output current (open-circuit) or is in thermal shutdown.

Resources

DC1515A - Design Files
3/12/2010

DC1515A - Schematic
3/12/2010

DC1515A - Demo Board
3/12/2010

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LT3050

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Solutions Bulletin & Brochure 1

Product Selection Guide 1