 to reduce acoustic noise at light loads. Otherfeatures found in the NCP1652 include a high voltage startup circuit, voltage feedforward, brown out detector, internal overload timer, latchinput and a high accuracy multiplier. The NCP1652 is a highly integrated controller for implementingpower factor correction (PFC) and isolated step down acdc power conversion in a single stage, resulting in a lower cost and reduced partcount solution. This controller is ideal for notebook adapters, battery chargers and other offline applications with power requirements between 75 W and 150 W. The single stage is based on the flyback converter and it is designed to operate in continuous conduction (CCM) or discontinuous conduction (DCM) modes.The NCP1652 increases the system efficiency by incorporating asecondary driver with adjustable nonoverlap delay for controlling a synchronous rectifier switch in the secondary side, an active clamp switch in the primary or both. In addition, the controller features a proprietary SoftSkip > http://onsemi.com MARKINGDIAGRAMS 201NCP1652AWLYYWWG SO20 WBDW SUFFIXCASE 751D NCP1652GAWLYWW SOIC16D SUFFIXCASE 751B Features Dual Control Outputs with Adjustable Non Overlap Delay forDriving a Synchronous Rectifier Switch, an Active Clamp Switch orBoth > A= Assembly Location WL= Wafer LotYY= YearWW= Work WeekG= PbFree Package Voltage Feedforward Improves Loop Response > Frequency Jittering Reduces EMI Signature > Proprietary SoftSkip  at Light Loads Reduces Acoustic Noise > ORDERING INFORMATION Brown Out Detector > See detailed ordering and shipping information in the packagedimensions section on page 32 of this data sheet. Internal 150 ms Fault Timer > Independent LatchOff Input Facilitates Implementation ofOvervoltage and Overtemperature Fault Detectors > Single Stage PFC and Isolated Step Down Converter > Continuous or Discontinuous Conduction Mode Operation > Average Current Mode Control (ACMC), Fixed Frequency Operation > High Accuracy Multiplier Reduces Input Line Harmonics > Adjustable Operating Frequency from 20 kHz to 250 kHz > These are PbFree Devices > Typical Applications High Current Battery Chargers > Front Ends for Distributed Power Systems > High Power Solid State Lighting > կé Semiconductor Components Industries, LLC, 2008 Publication Order Number: June, 2008 Rev. 01 NCP1652/D size="-2">

SO20 WBSOIC16 CT CTRamp CompAC INFBCMAC COMPLatchOff StartupV 1234 5678 161211109 Ramp CompAC INFBV 21 1920 15 14GNDOUT B 18161514 13OUT A 17 V > FF CC FF 5678 I > spos CMNCNCAC COMPLatchOff StartupNCNCGNDOut BOut AV I > avg R > delay CC (Top View ) 13 12 43 I > spos 9 I > avg 1110 R > delay

Pin 16 Pin 20 Pin Symbol Description 1 1 C > T An external timing capacitor (C > T ) sets the oscillator frequency. A sawtooth between 0.2 V and 4V sets the oscillator frequency and the gain of the multiplier. 2 2 RAMP COMP A resistor (R > RC ) between this pin and ground adjust the amount of ramp compensation that isadded to the current signal. Ramp compensation is required to prevent subharmonic oscilla-tions. This pin should not be left open. 3 3 AC IN The scaled version of the full wave rectified input ac wave is connected to this pin by means ofa resistive voltage divider. The line voltage...

(Notes 1 and 2) Rating Symbol Value Unit Start_up Input VoltageStart_up Input Current V > HV 0.3 to 500 VmA I > HV 100 Power Supply Input Voltage Power Supply Input Current V > CC 0.3 to 20 VmA I > CC 100 Latch Input Voltage Latch Input Current V > Latch 0.3 to 10 VmA I > Latch 100 All Other Pins Voltage All Other Pins Current 0.3 to 6.5 VmA 100 Thermal Resistance, JunctiontoAir 0.1 in Copper0.5 inԔ Copper > JA C/W 130110 Thermal Resistance, JunctiontoLead R > ЎJL 50 ذ C/W Maximum Power Dissipation @ T > A = 25 C P > MAX 0.77 W Operating Temperature Range T > J 40 to 125 а C Storage Temperature...

(V > CC = 15 V, V > AC IN = 3.8 V, V > FB = 2.0 V, V > FF = 2.4 V, V > Latch = open, V > ISPOS = 100 mV,C > OUTA = 1 nF, C > T = 470 pF, C > IAVG = 0.27 nF, C > Latch = 0.1 nF, C > M = 10 nF, R > IAVG = 76.8 k , R > delay = 49.9 k ,C > OUTB = 330 pF, R > RC = 43 k , For typical Value T > J = 25 C, for min/max values T > J = 40 а C to 125 C, unless otherwise noted) Parameter Test Condition Symbol Min Typ Max Unit OSCILLATOR Frequency f > osc 90 100 110 kHz Frequency Modulation in Percentageof f Ж 6.8 % > OSC Frequency Modulation Period ֖ 6.8 ms Ramp Peak Voltage V > CT(peak) ֖ 4.0 V Ramp Valley...

(V > CC = 15 V, V > AC IN = 3.8 V, V > FB = 2.0 V, V > FF = 2.4 V, V > Latch = open, V > ISPOS = 100 mV,C > OUTA = 1 nF, C > T = 470 pF, C > IAVG = 0.27 nF, C > Latch = 0.1 nF, C > M = 10 nF, R > IAVG = 76.8 k , R > delay = 49.9 k ,C > OUTB = 330 pF, R > RC = 43 k , For typical Value T > J = 25 C, for min/max values T > J = 40 а C to 125 C, unless otherwise noted) ParameterUnitMaxTypMinSymbolTest Condition AC INPUT Input Bias Current Into ReferenceMultiplier & Current CompensationAmplifier I > AC IN(IB) Ж 0.01 A DRIVE OUTPUTS A and B Drive Resistance (Thermally Limited)OUTA SinkOUTA SourceOUTB...

(V > CC = 15 V, V > AC IN = 3.8 V, V > FB = 2.0 V, V > FF = 2.4 V, V > Latch = open, V > ISPOS = 100 mV,C > OUTA = 1 nF, C > T = 470 pF, C > IAVG = 0.27 nF, C > Latch = 0.1 nF, C > M = 10 nF, R > IAVG = 76.8 k , R > delay = 49.9 k ,C > OUTB = 330 pF, R > RC = 43 k , For typical Value T > J = 25 C, for min/max values T > J = 40 а C to 125 C, unless otherwise noted) ParameterUnitMaxTypMinSymbolTest Condition STARTUP AND SUPPLY CIRCUITS Minimum Startup Voltage I > start = 0.5 mA, V > CC = V > CC(on) Ж 0.5 V V > start(min) ֖ 40 V Startup Current V > CC = V > CC(on) 0.5 V, V > FB = Open I > start...

, OSCILLATOR FREQUENCY (kHz)OSCILLATOR FREQUENCY MODULATION PERIOD (ms) OSCILLATOR FREQUENCYMODULATION (%) OSC f 9095100105110 50250255075100125150T 6.06.57.07.58.0 50250255075100125150 > J , JUNCTION TEMPERATURE ( C) T > J , JUNCTION TEMPERATURE ( а C) > , OSCILLATOR RAMP PEAKVOLTAGE (V) CT(peak) 6.06.5 7.07.58.0 50250255075100125150T > V 3.83.853.93.954.04.054.1 50250255075100125150T > J , JUNCTION TEMPERATURE ( C) > J , JUNCTION TEMPERATURE ( а C) > , RAMP COMP PEAK VOLTAGE (V) D, MAXIMUM DUTY RATIO (%) 9092949698100 50250255075100125150 3.83.853.93.954.04.054.1 T > COMP(peak) 5025025507510012515...