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UA7527 Datasheet(PDF) 1 Page - Unisonic Technologies |
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UA7527 Datasheet(HTML) 1 Page - Unisonic Technologies |
1 / 6 page UNISONIC TECHNOLOGIES CO., LTD UA7527 Preliminary LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 6 Copyright © 2011 Unisonic Technologies Co., Ltd QW-R114-003.b POWER FACTOR CONTROLLER DESCRIPTION The UTC UA7527 is a simple and high performance active power factor corrective controller for boost PFC application which operates in the critical conduction mode. The UTC UA7527 is optimized for electronic ballasts, low power and high density power supplies which require minimum board area reduced component count and low power dissipation. Internal R/C filter eliminates the need for an external R/C filter. Special circuitry has also been added to prevent no load runaway conditions. The output drive clamping circuit limits the overshoot of the power MOSFET gate drive despite the supply voltage. This greatly enhances the system reliability. FEATURES * Internal Start-up Timer * Very Precise Adjustable Output Over Voltage Protection * Zero Current Detector * Quadrant Multiplier * Internal R/C Filter Eliminates the Need for an External R/C Filter * 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 SOP-8 ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free UA7527L-S08-R UA7527G-S08-R SOP-8 Tape Reel UA7527L-S08-T UA7527G-S08-T SOP-8 Tube |
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