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| 型号： | YB7002 |
| 厂商： | YOBON TECHNOLOGIES, INC. |
| 英文描述： | Photoflash Capacitor Charger with Automatic Refresh |
| 中文描述： | 照相闪光灯电容充电器，具有自动刷新 |
| 文件页数： | 1/8页 |
| 文件大小： | 204K |
| 代理商： | YB7002 |
YB7002 MRev1.0
www.yobon.com.tw
1
YB7002
Photoflash Capacitor Charger with Automatic Refresh
Description
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
Applications
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.
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
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.
Digital Camera Flash unit
Film Camera Flash Unit
High Voltage Power Supplies
Typical Application Circuit
Figure1
Typical Application Circuit
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