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ZXSC440 - PHOTOFLASH CHARGER

Description

The ZXSC440 is a dedicated photoflash charger, charging an 80␮F photoflash capacitor to 300V in 3.5 seconds from a 3V supply.

The flyback conversion efficiency is typically 75%, much higher than the commonly used discrete charging circuits.

Features

  • Charges a 80␮F photoflash capacitor to 300V in 3.5 seconds from 3V.

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Full PDF Text Transcription

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ZXSC440 PHOTOFLASH CHARGER DESCRIPTION The ZXSC440 is a dedicated photoflash charger, charging an 80␮F photoflash capacitor to 300V in 3.5 seconds from a 3V supply. The flyback conversion efficiency is typically 75%, much higher than the commonly used discrete charging circuits. The Charge pin enables the circuit to be initiated from the camera's microprocessor, using negligible current when flash is not being used. The Ready pin signals the microprocessor when the flash is charged and ready to be fired. A small amount of hysteresis on the voltage feedback shuts down the device as long as the capacitor remains fully charged, again using negligible current. FEATURES • Charges a 80␮F photoflash capacitor to 300V in 3.
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