Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LT3485
Edited by the Electronicstalk Editorial Team on 20 February 2006
Photoflash chargers do the lot
The LT3485 family of photoflash capacitor charger ICs combine a complete photoflash capacitor charger and IGBT drive.
Linear Technology has announced the LT3485 family of photoflash capacitor charger ICs which integrate complete photoflash capacitor charger and IGBT drive The patented control technique of the LT3485 allows it to use extremely small "standardised" transformers
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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No external components are required to set the output voltage.
While charging, an output proportional to the capacitor voltage is available for monitoring.
Input current is tightly controlled to provide consistent charge time.
The devices operate from an input voltage of 1.8 to 10V, making them ideal for applications powered by two AA alkaline cells or Li-ion single or multiple cell batteries.
The LT3485-3, -0, -2 and -1 have primary current limits of 2, 1.4, 1 and 0.7A, respectively, resulting in tightly controlled average input current of 700, 500, 350 and 225mA, respectively.
The four versions are otherwise identical.
The charge pin gives the user full control of the part.
Driving the charge pin low puts the part in micropower shutdown.
The done pin indicates when the part has completed charging.
The LT3485 series of parts are housed in tiny low profile 3 x 3mm DFN packages, enabling solution footprints as small as 75mm2.
Each device is priced at $2.25 in 1000-piece quantities and all types are available from stock. Request a free brochure from Linear Technology Corp ...
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