YB7002 Datasheet, PDF (1/8 Pages) YOBON TECHNOLOGIES,INC. – Photoflash Capacitor Charger with Automatic Refresh

YB7002
Photoflash Capacitor Charger with Automatic Refresh
Description
Features
YB7002 charge high voltage photoflash „ Charge Any Size Photoflash Capacitor
capacitors quickly and efficiently. Designed _{„ Support Operation from Two AA Cells}
for use in digital and film cameras, these
devices use flyback topology to achieve _„
efficiencies up to four times better than _„
competing flash modules. A unique peak
inductor current control mechanism maintains
„
current-limited mode transformer operation ^„
throughout the entire charge cycle, eliminating ^„
the high inrush current often found in modules. „
or Any Supply from 1.8V to 16V
Use Standard transformers
No High Voltage Zener Diode Required
Built in 40V output switch
Adjustable Output Voltage
Adjustable Peak Switch Current
Automatic Refresh with adjustable
timer
YB7002 output voltage sensing scheme
„ Charge Complete Indicator
monitors the flyback voltage to directly regulate _{„ Small 10-Lead MSOP Packages}
the output voltage. This feature allows the
capacitor to be held at a fully charged state
without excessive power consumption.
Adjustable refresh time is fully controllable by
the user with a resistor. The DONE pin signals
that the capacitor is full charged.
Applications
„ Digital Camera Flash unit
„ Film Camera Flash Unit
„ High Voltage Power Supplies
Typical Application Circuit
Figure1jTypical Application Circuit
YB7002 MRev1.0
www.yobon.com.tw
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