LT3585

PRODUCTION

Photoflash Charger with Adjustable Input Current and IGBT Driver

Part Models: 9
1ku List Price: Starting From $1.36

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Overview

Adjustable Input Current
Integrated IGBT Driver
No Output Voltage Divider Needed
Uses Small Transformers: 5.8mm × 5.8mm × 3mm
Fast Photoflash Charge Times
Charges Any Size Photoflash Capacitor
Supports Operation from Single Li-Ion Cell, Two AA
Cells or any Supply from 1.5V Up to 16V
Small 10-Lead (3mm × 2mm) DFN Package

The LT3585 series are highly integrated ICs designed to charge photoﬂash capacitors in digital and ﬁlm cameras. A new control technique allows for the use of extremely small transformers. Each part contains an on-chip high voltage NPN power switch. Output voltage detection is completely contained within the part, eliminating the need for any discrete zener diodes or resistors. The output voltage can be adjusted by simply changing the turns ratio of the transformer.

The CHRG/IADJ pin gives full control of the part to the user. Driving CHRG/IADJ low puts the part in low power shutdown. The CHRG/IADJ pin can also be used to reduce the input current of the charger, useful in extending battery life. The DONE pin indicates when the part has completed charging.

The LT3585 series of parts are housed in tiny 3mm × 2mm DFN packages.

Applications

Digital/Film Camera Flash
PDA/Cell Phone Flash
Emergency Strobe

Part Models: 9
1ku List Price: Starting From $1.36

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
LT3585EDDB-0#TRMPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-0#TRPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-1#TRMPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-1#TRPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-2#TRMPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-2#TRPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-3#T003!	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-3#TRMPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3585EDDB-3#TRPBF	10-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

Software Resources

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Tools & Simulations

LTspice 1

LT3585-0 Demo Circuit - Photoflash Charger with Adjustable Input Current and IGBT Drive (3V to 320V)

Models for the following parts are available in LTspice:

LT3585-0
LT3585-1
LT3585-2
LT3585-3

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.