FAN7527BN

FAIRCHILD SEMICONDUCTOR  FAN7527BN  芯片, 功率因子校正控制器

The is a simple and high-performance active Power Factor Correction PFC Controller for electronic ballast. 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.

.

Internal start-up timer

.

Internal R/C filter eliminates the need for external R/C filter

.

Precise adjustable output overvoltage protection

.

Zero current detector

.

One quadrant multiplier

.

Trimmed 1.5% internal band gap reference

.

Under-voltage lockout with 3V of hysteresis

.

Totem-pole output with high-state clamp

.

Low start-up and operating current