FAN7527B Series

Critical Conduction Mode (CrM) Power Factor Controller

Catalog

Critical Conduction Mode (CrM) Power Factor Controller

Part	Supplier Device Package	Current - Startup	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Mode	Voltage - Supply [Max]	Voltage - Supply [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case
ON Semiconductor FAN7527BMX	8-SOIC	60 µA	8-SOIC	3.9 mm	0.154 in	Surface Mount	Discontinuous (Transition)	30 VDC	11.5 V	125 °C	-25 °C
ON Semiconductor FAN7527BN	8-DIP	60 µA	8-DIP			Through Hole	Discontinuous (Transition)	30 VDC	11.5 V	125 °C	-25 °C	0.3 in	7.62 mm

Catalog

Critical Conduction Mode (CrM) Power Factor Controller

Key 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

Description

The FAN7527B provides simple and high-performance active Power Factor Correction (PFC). The FAN7527B is optimized for electronic ballasts and low–power, 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.