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NCP1654

ON Semiconductor
Part Number NCP1654
Manufacturer ON Semiconductor
Description Power Factor Controller
Published Apr 25, 2007
Detailed Description Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters NCP1654 The NCP1654 is a contr...
Datasheet PDF File NCP1654 PDF File

NCP1654
NCP1654

Overview
Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters NCP1654 The NCP1654 is a controller for Continuous Conduction Mode (CCM) Power Factor Correction step−up pre−converters.
It controls the power switch conduction time (PWM) in a fixed frequency mode and in dependence on the instantaneous coil current.
Housed in a SO8 package, the circuit minimizes the number of external components and drastically simplifies the PFC implementation.
It also integrates high safety protection features that make the NCP1654 a driver for robust and compact PFC stages like an effective input power runaway clamping circuitry.
Features • IEC61000−3−2 Compliant • Average Current Continuous Conduction Mode • Fast Transient Response • Very Few External Components • Very Low Startup Currents (< 75 mA) • Very Low Shutdown Currents (< 400 mA) • Low Operating Consumption • ±1.
5 A Totem Pole Gate Drive • Accurate Fully Integrated 65/133/200 kHz Oscillator • Latching PWM for cycle−by−cycle Duty−Cycle Control • Internally Trimmed Internal Reference • Undervoltage Lockout with Hysteresis • Soft−Start for Smoothly Startup Operation • Shutdown Function • Pin to Pin Compatible with Industry Standard • This is a Pb−Free Device Safety Features • Inrush Currents Detection • Overvoltage Protection • Undervoltage Detection for Open Loop Detection or Shutdown • Brown−Out Detection • Soft−Start • Accurate Overcurrent Limitation • Overpower Limitation Typical Applications • Flat TVs, PC Desktops • AC Adapters • White Goods, other Off−line SMPS DATA SHEET www.
onsemi.
com 8 1 SO−8 D SUFFIX CASE 751 MARKING DIAGRAM 8 54Bxx ALYW G 1 xx = 65, 133 or 200 A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package PIN CONNECTIONS Ground 1 8 Driver VM 2 CS 3 7 VCC 6 Feedback Brown−Out 4 5 Vcontrol (Top View) ORDERING INFORMATION Device Package Shipping† NCP1654BD65R2G SO−8 (Pb−Free) 2500 / Tape & Reel NCP1654BD133R2G SO−8 (Pb−Free) 250...


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