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.
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- Internal start-up timer
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- Internal R/C filter eliminates the need for external R/C filter
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- Precise adjustable output overvoltage protection
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- Zero current detector
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- One quadrant multiplier
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- Trimmed 1.5% internal band gap reference
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- Under-voltage lockout with 3V of hysteresis
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- Totem-pole output with high-state clamp
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- Low start-up and operating current