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A8439

Part Number	A8439
Manufacturer	Allegro MicroSystems
Description	Photoflash Capacitor Charger
Published	Mar 14, 2007
Detailed Description	com A8439 Photoflash Capacitor Charger with IGBT Driver and Refresh Features and Benefits ▪ ▪ ▪ ▪ ▪ ▪ ...
Datasheet	A8439 PDF File

Overview

...▪ ▪ ▪ Power with 1 Li+ or 2 Alkaline/NiMH/NiCAD batteries Adjustable output voltage Auto-refresh >75% efficiency Eight-level, digitally-programmable current limit Charge complete indication Integrated IGBT driver with trigger No primary-side Schottky diode needed Low-profile package (0.
75 mm nominal height) Description The A8439 is a highly integrated IC that charges photoflash capacitors for digital and film cameras.
An integrated MOSFET switch drives the transformer in a flyback topology.
It also features an integrated IGBT driver that facilitates the flash discharge function and saves board space.
The CHARGE pin enables the A8439 and starts the charging of the output capacitor.
When the ...

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