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NCP1340 Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1340 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 39 page © Semiconductor Components Industries, LLC, 2016 September, 2016 − Rev. 0 1 Publication Order Number: NCP1340/D NCP1340 High-Voltage, Quasi-Resonant, Controller Featuring Valley Lock-Out Switching The NCP1340 is a highly integrated quasi−resonant flyback controller suitable for designing high−performance off−line power converters. With an integrated active X2 capacitor discharge feature, the NCP1340 can enable no−load power consumption below 30 mW. The NCP1340 features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet−skip mode to manage the power delivery while minimizing acoustic noise. To help ensure converter ruggedness, the NCP1340 implements several key protective features such as internal brownout detection, a non−dissipative Over Power Protection (OPP) for constant maximum output power regardless of input voltage, a latched overvoltage and NTC−ready overtemperature protection through a dedicated pin, and line removal detection to safely discharge the X2 capacitors when the ac line is removed. If transient load capability is desired, the NCP1341 offers the same performance and features with the addition of power excursion mode (PEM). Features • Integrated High−Voltage Startup Circuit with Brownout Detection • Integrated X2 Capacitor Discharge Capability • Wide VCC Range from 9 V to 28 V • 28 V VCC Overvoltage Protection • Abnormal Overcurrent Fault Protection for Winding Short Circuit or Saturation Detection • Internal Temperature Shutdown • Valley Switching Operation with Valley−Lockout for Noise−Free Operation • Frequency Foldback with 25 kHz Minimum Frequency Clamp for Increased Efficiency at Light Loads • Skip Mode with Quiet−Skip Technology for Highest Performance During Light Loads • Minimized Current Consumption for No Load Power Below 30 mW • Frequency Jittering for Reduced EMI Signature • Latching or Auto−Recovery Timer−Based Overload Protection • Adjustable Overpower Protection (OPP) • Fixed or Adjustable Maximum Frequency Clamp • Fault Pin for Severe Fault Conditions, NTC Compatible for OTP • 4 ms Soft−Start Timer PIN CONNECTIONS (Top Views) SOIC−9 NB D SUFFIX CASE 751BP www.onsemi.com See detailed ordering and shipping information n on page 2 of this data sheet. ORDERING INFORMATION 1 9 1340xz = Specific Device Code x = A or B z = 1, 2 or 3 A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package MARKING DIAGRAM 1340xz ALYW G 1 9 GND DRV VCC HV FMAX FB ZCD/OPP CS Fault 1 FB ZCD/OPP CS Fault GND DRV VCC HV 1 SOIC−8 NB D SUFFIX CASE 751 1 8 |
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Similar Description - NCP1340_16 |
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