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NCP1442T Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1442T Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 20 page © Semiconductor Components Industries, LLC, 2004 October, 2004 − Rev. 7 1 Publication Order Number: NCP1442/D NCP1442, NCP1443, NCP1444, NCP1445 4.0 A 280 kHz/560 kHz Boost Regulators The NCP1442/3/4/5 products are 280 kHz/560 kHz switching regulators with a high efficiency, 4.0 A integrated switch. These parts operate over a wide input voltage range, from 2.7 V to 30 V. The flexibility of the design allows the chips to operate in most power supply configurations, including boost, flyback, forward, inverting, and SEPIC. The ICs utilize current mode architecture, which allows excellent load and line regulation, as well as a practical means for limiting current. Combining high−frequency operation with a highly integrated regulator circuit results in an extremely compact power supply solution. The circuit design includes provisions for features such as frequency synchronization, shutdown, and feedback controls for either positive or negative voltage regulation. Part Number Frequency Feedback Voltage Polarity NCP1442 280 kHz Positive NCP1443 280 kHz Negative NCP1444 560 kHz Positive NCP1445 560 kHz Negative Features • Pb−Free Packages are Available* • Integrated Power Switch: 4.0 A Guaranteed • Wide Input Range: 2.7 V to 30 V • High Frequency Allows for Small Components • Minimum External Components • Easy External Synchronization • Built−in Overcurrent Protection • Frequency Foldback Reduces Component Stress During an Overcurrent Condition • Thermal Shutdown with Hysteresis • Regulates Either Positive or Negative Output Voltages • Shut Down Current: 50 mA Maximum Applications • Boost Converter • Inverting Converter • Distributed Power • Portable Computers • Battery Powered Systems *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 18 of this data sheet. PowerFLEX ] 7−PIN F SUFFIX CASE 936J 1 7 NCP1442/4 Pin 1. VC 2. FB 3. TEST 4. GND 5. VSW 6. SS 7. VCC NCP1443/5 1. VC 2. TEST 3. NFB 4. GND 5. VSW 6. SS 7. VCC PIN CONNECTIONS AND MARKING DIAGRAMS x = Device Number 2, 3, 4, or 5 A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week NC P144xF AWLYWW NC P144xT AWLYWW 1 7 17 17 7 LEAD, TO−220 T SUFFIX CASE 821P PowerFLEX 7−PIN 7 LEAD, TO−220 http://onsemi.com |
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