LT3585
PRODUCTIONPhotoflash Charger with Adjustable Input Current and IGBT Driver
- Part Models
- 9
- 1ku List Price
- Starting From $1.72
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
Documentation
Data Sheet 1
User Guide 1
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) | ||
| LT3585EDDB-0#TRPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-1#TRMPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-1#TRPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-2#TRMPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-2#TRPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-3#T003! | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-3#TRMPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3585EDDB-3#TRPBF | 10-Lead DFN (3mm x 2mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & 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.
Evaluation Kits
LT3485EDD-0 | Photoflash Charger, 500mA Input Current, Vin=2.8V-4.2V, Vbat=1.8V-4.2V, 5V Max
Resources
LT3585EDDB-1 | 250mA I Input Photoflash Charger with Adjustable Input Current Limit and Integrated IGBT Driver
Resources
LT3585EDDB-2 | 400mA I Input Photoflash Charger with Adjustable Input Current Limit and Integrated IGBT Driver