LTC3454

PRODUCTION

1A Synchronous Buck-Boost High Current LED Driver

Data Sheet Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.36

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Part Details

High Efficiency: >90% Typical in Torch Mode, >80% in Flash Mode
Wide V_IN Range: 2.7V to 5.5V
Up to 1A Continuous Output Current
3.5% LED Current Programming Accuracy
Internal Soft-Start
Open/Shorted LED Protection
Constant Frequency 1MHz Operation
Zero Shutdown Current
Overtemperature Protection
Small Thermally Enhanced 10-Lead (3mm × 3mm) DFN Package

Part Models: 2
1ku List Price: Starting From $2.36

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
LTC3454EDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3454EDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3454

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

LTC3454EDD Demo Board | Synchronous Buck-Boost LumiLED Driver

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Product Details

Demonstration circuit 875 is a high efficiency buck-boost flash LED driver featuring the LTC3454EDD. The board has two circuits optimized for different applications: a small footprint solution featuring 350mA, 300ms LED flash current or 150mA constant LED torch current, and a high current solution featuring 400/600/1000mA constant-current operation. The input voltage range of 2.7V to 5.5V is suitable for a single Lithium-Ion battery or three AAA batteries in series. The Li-Ion input range, high LED flash current with separate torch mode current setting, internal synchronous power switches, minimal and low-profile external components, and simple design makes the LTC3454 the top solution for highly efficient, space-constrained cellular telephone camera flash solutions.

Resources

DC875B - Schematic
11/22/2016

DC875B - Demo Manual
11/22/2016

DC875B - Design Files
11/22/2016

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Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1