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KA7526D Datasheet

  • KA7526D

  • Power Factor Correction Controller

  • 22頁(yè)

  • FAIRCHILD

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www.fairchildsemi.com
KA7526
Power Factor Correction Controller
Features
鈥?Internal Startup Timer
鈥?Internal R/C filter which eliminates the Need for an
External R/C filter
鈥?Overvoltage Comparator eliminates Runaway Output
Voltage
鈥?Zero Current Detector
鈥?One Quadrant Multiplier
鈥?Trimmed 1.5% Internal Bandgap Reference
鈥?Under Voltage Lock Out with 5V of Hysteresis
鈥?Totem Pole Output with High State Clamp
鈥?Low Startup and Operating Current
鈥?8-Pin DIP or 8-Pin SOP
Descriptions
The KA7526 provides simple and high performance active
power factor correction. KA7526 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 R/C filter eliminates
the need for an external R/C filter. Internal clamping of the
error amplifier and multiplier outputs improves turn on over-
shoot characteristics and current limiting. Special circuitry
has also been added to prevent no load runaway conditions.
The output drive clamping circuit limits overshoot of the
power MOSFET gate drive Independent of supply voltage,
so that it greatly enhance the system reliability.
Applications
鈥?Electronic Ballast
鈥?SMPS
8-DIP
1
8-SOP
1
Rev. 5.0
漏2000 Fairchild Semiconductor International

KA7526D 產(chǎn)品屬性

  • Fairchild Semiconductor

  • 功率因數(shù)校正 IC

  • + 125 C

  • SMD/SMT

  • SOIC-8

  • Tube

  • - 25 C

  • 95

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