April 2013
?2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN7527B " Rev. 1.0.3
FAN7527B
Power Factor Correction Controller
Features
?   Internal Startup Timer
?   Internal R/C Filter Eliminates the Need for External
R/C Filter
?   Precise Adjustable Output Over-Voltage Protection
?   Zero Current Detector
?   One Quadrant Multiplier
?   Trimmed 1.5% Internal Band Gap Reference
?   Under-Voltage Lockout with 3 V of Hysteresis
?   Totem-Pole Output with High-State Clamp
?   Low Startup and Operating Current
?   8-Pin SOP or 8-Pin DIP
Applications
?   Electronic Ballast
?   SMPS
Description
The FAN7527B provides simple and high-performance
active Power Factor Correction (PFC). The FAN7527B
is optimized for electronic ballasts and lowpower, high-
density power supplies that require minimum board size,
reduced    external    components,    and    low    power
dissipation. Because the R/C filter is included in the
current-sense   block,   an   external   R/C   filter   is   not
necessary. Special circuitry prevents no-load runaway
conditions. Regardless of the supply voltage, the output
drive clamping circuit limits the overshoot of the power
MOSFET gate drive, which improves system reliability.
Ordering Information
Part Number
Operating
Temperature Range
Package
Packing Method
FAN7527BMX
-25 to +125癈
8-Lead, Small Outline Package (SOP)
Tape and Reel
FAN7527BN
-25 to +125癈
8-Lead, Dual Inline Package (DIP)
Tube