Overview
Features and Benefits
- 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
Product Details
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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (3)
Documentation & Resources
-
R530 Reliability Data3/26/2018
-
DC988A - Demo Manual9/24/2009
Tools & Simulations
LTspice
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LT3585-0
LT3585-1
LT3585-2
LT3585-3
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LT3585EDDB-0#TRMPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-0#TRPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-1#TRMPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-1#TRPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-2#TRMPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-2#TRPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-3#T003! | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-3#TRMPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| LT3585EDDB-3#TRPBF | Material Declaration | Reliability Data | 10-Lead DFN (3mm x 2mm w/ EP) | |
| Wafer Fabrication Data | R530 Reliability Data |
Support & Discussions
LT3585 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.