KA7525B ,Power Factor Correction ControllerKA7525BPower Factor Correction Controller
KA7525BD ,Power Factor Correction (PFC) ControllerApplications• Electronic Ballast8-DIP•SMPS18-SOP1Rev.1.0.12002 Fairchild Semiconductor CorporationK ..
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KA7526D ,Power Factor Correction (PFC) ControllerFeatures Descriptions• Internal startup timer The KA7526 provides simple and high performance activ ..
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KS0105 , 32 CH COMMON DRIVER FOR DOT MATRIX LCD
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KA7525B
Power Factor Correction Controller
Features Internal Startup Timer Internal Current Sense Blanking which eliminates the
Need for an External R/C filter Overvoltage Comparator eliminates Runaway Output oltage Zero Current Detector One Quadrant Multiplier Trimmed 1.5% Internal Bandgap Reference Under V oltage Lock Out with 2.1V of Hysteresis Totem Pole Output with High State Clamp Low Startup and Operating Current 8-Pin Dual In-line Package or 8-Pin SOP.
Applications Electronic Ballast
•SMPS
DescriptionThe KA7525B provides simple and high performance active
power factor correction. KA7525B is optimized for elec-
tronic 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 multi-
plier outputs improves turn on overshoot characteristics and
current limiting. Special circuitry has also been added to pre-
vent no load runaway conditions. Output drive clamps limit-
ing power MOSFET gate drive independent of supply
voltage greatly enhance the products practical application.
