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YB7002 Datasheet

  • YB7002

  • Photoflash Capacitor Charger with Automatic Refresh

  • 8頁(yè)

  • YOBON

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YB7002
Photoflash Capacitor Charger with Automatic Refresh
Description
YB7002 charge high voltage photoflash
capacitors quickly and efficiently. Designed
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.
Features
Charge Any Size Photoflash Capacitor
Support Operation from Two AA Cells
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
Charge Complete Indicator
Small 10-Lead MSOP Packages
YB7002 output voltage sensing scheme
monitors the flyback voltage to directly regulate
the output voltage. This feature allows the
capacitor to be held at a fully charged state
Applications
without excessive power consumption.
Digital Camera Flash unit
Adjustable refresh time is fully controllable by
Film Camera Flash Unit
the user with a resistor. The DONE pin signals
High Voltage Power Supplies
that the capacitor is full charged.
Typical Application Circuit
Figure1錛歍ypical Application Circuit
YB7002 MRev1.0
www.yobon.com.tw
1

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