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參數(shù)資料
| 型號： | KA7525B |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Power Factor Correction Controller |
| 中文描述： | 0.5 A POWER FACTOR CONTROLLER, PDIP8 |
| 封裝： | DIP-8 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 480K |
| 代理商： | KA7525B |
2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.1
Features
Internal Start-up Timer
Internal Current Sense Blanking Which Eliminates the
Need for an External R/C filter
Overvoltage Comparator Eliminates Runaway Output
Voltage
Zero Current Detector
One Quadrant Multiplier
Trimmed 1.5% Internal Bandgap Reference
Under Voltage Lock Out with 2.1V of Hysteresis
Totem Pole Output with High State Clamp
Low Start-up and Operating Current
8-Pin DIP or 8-Pin SOP.
Applications
Electronic Ballast
SMPS
Description
The KA7525B provides simple and high performance active
power factor correction. KA7525B is optimized for
electronic ballast and low power, high density power
supplies requiring a minimum board area, reduced
component count and low power dissipation. Addition of
internal current sense blanking (Internal R,C) eliminates the
need for an external R/C filter. Internal clamping of the error
amplifier and multiplier outputs improves turn on overshoot
characteristics and current limiting. Special circuitry has also
been added to prevent no load runaway conditions. Output
drive clamps limiting power MOSFET gate drive
independent of supply voltage greatly enhance the products
practical application.
K A7525B
Power Fac tor Correc tion Controller
8-DIP
8-SOP
1
1
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