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参数资料
| 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： | 2/8页 |
| 文件大小： | 204K |
| 代理商： | YB7002 |
YB7002 MRev1.0
www.yobon.com.tw
2
YB7002
Photoflash Capacitor Charger with Automatic Refresh
Pin Description
Figure2
YB7002 MSOP10
Pin Designator
Table1
Pin
NAME
Description
1
PGND
Power ground, tie solidly to system ground of the board.
2
AGND
Analog ground, tie solidly to system ground of the board.
3
VIN
Input supply pin. Must be locally bypassed capacitor to eliminate noise.
4
VHYST
Connecting a resistor RHYST from VHYST to ground will set the refresh time.
A 13.5K resistor and RHYST form a divider circuit to restart the charging cycle
once VFB is dropping below Vhyst.
5
VFB
A resistor divider from VOUT to ground enables the system to sense VOUT
voltage and determine the charging and recharging cycles.
6
EN
Device enable, a1.8V or above will turn on the IC. Below 0.4V will put the chip
in shut down mode.
7
DONE
Once VOUT voltage reaches above the designated value, DONE pin will be
pulled low to indicate charging is completed.
8
LIMIT
Tie a resistor Rlimit from Limit to ground will adjust the value of the peak
Switch pin current. A 11uA current going through Rlimit sets up the peak
voltage the sense node can reach (see the block diagram).
9
10
SW
They connect to the collector of the power NPN device.
Ordering Information
Table2
Order Number
Package Type
Supplied as
Package Marking
YB7002
MSOP10
2500 units Tape & Reel
YB7002
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