LTC3490

PRODUCTION

Single Cell 350mA LED Driver

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $2.55

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Part Details

350mA Constant Current Output
2.8V to 4V Output Compliance
1- or 2-Cell NiMH or Alkaline Input
Synchronous Rectification: Up to 90% Efficiency
Fixed Frequency Operation: 1.3MHz
Low Quiescent Current: <1mA
Very Low Shutdown Current: <50µA
Open LED Output Limited to 4.7V
V_IN Range: 1V to 3.2V
Dimming Control
Undervoltage Lockout to Protect Batteries
Low Profile (0.75mm) 3mm × 3mm Thermally Enhanced 8-Lead DD and S8 Packages

Part Models: 4
1ku List Price: Starting From $2.55

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
LTC3490EDD#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3490EDD#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3490ES8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3490ES8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LTC3490ES8#PBF	PRODUCTION
LTC3490ES8#TRPBF	PRODUCTION
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3490ES8#PBF	PRODUCTION
LTC3490ES8#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LTC3490ES8#PBF	PRODUCTION
LTC3490ES8#TRPBF	PRODUCTION

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

Software Resources

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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTC3490

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

LTC3490EDD Demo Board | Boost White LED Driver, 1.8V ≤ VIN ≤ 3.5V, VLED up to 4V @ 350mA

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Product Details

Demonstration circuit 762 is a 350mA, 1W synchronous boost white LED driver featuring the LTC3490 and a Lumileds Luxeon LED. The input voltage range of the LT3490 is 1V to 3.4V; however the demo board operates with a 1.8V to 3.5V range. The board comes with two AA alkaline battery cells to be stuffed in the battery pack on the back of the PCB. The LED compliance voltage range is 2.8V to 4V. Other features include a low battery detect output and analog dimming control. The LT3490's simple design, low quiescent current and minimal external components make it an ideal solution for space-constrained ~1W flashlight or portable LED driver solutions.

Resources

DC762A - Demo Manual
9/24/2009

DC762A - Schematic
9/24/2009

DC762A - Design File
9/24/2009

Latest Discussions

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LTC3490

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

3rd Party Solutions 1