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NCP5351D Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP5351D Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 14 page © Semiconductor Components Industries, LLC, 2004 June, 2004 − Rev. 9 1 Publication Order Number: NCP5351/D NCP5351 4 A Synchronous Buck Power MOSFET Driver The NCP5351 is a dual MOSFET gate driver optimized to drive the gates of both high−side and low−side Power MOSFETs in a Synchronous Buck converter. The NCP5351 is an excellent companion to multiphase controllers that do not have integrated gate drivers, such as ON Semiconductor’s CS5323, CS5305 or CS5307. This architecture provides a power supply designer the flexibility to locate the gate drivers close to the MOSFETs. The 4.0 A drive capability makes the NCP5351 ideal for minimizing switching losses in MOSFETs with large input capacitance. Optimized internal, adaptive nonoverlap circuitry further reduces switching losses by preventing simultaneous conduction of both MOSFETs. The floating top driver design can accommodate MOSFET drain voltages as high as 25 V. Both gate outputs can be driven low, and supply current reduced to less than 25 mA, by applying a low logic level to the Enable (EN) pin. An undervoltage lockout function ensures that both driver outputs are low when the supply voltage is low, and a thermal shutdown function provides the IC with overtemperature protection. The NCP5351 is pin−to−pin compatible with the SC1205 and is available in a standard SO−8 package and thermally enhanced QFN−10. Features • 4.0 A Peak Drive Current • Rise and Fall Times < 15 ns Typical into 6000 pF • Propagation Delay from Inputs to Outputs < 20 ns • Adaptive Nonoverlap Time Optimized for Large Power MOSFETs • Floating Top Driver Accommodates Applications Up to 25 V • Undervoltage Lockout to Prevent Switching when the Input Voltage is Low • Thermal Shutdown Protection Against Overtemperature • < 1.0 mA Quiescent Current − Enabled • 25 mA Quiescent Current − Disabled • Internal TG to DRN Pulldown Resistor Prevents HV Supply−Induced Turn On of High−Side MOSFET Device Package Shipping† ORDERING INFORMATION SO−8 98 Units/Rail SO−8 2500 Tape & Reel NCP5351D NCP5351DR2 A = Assembly Location L = Wafer Lot Y = Year W = Work Week MARKING DIAGRAMS PIN CONNECTIONS SO−8 D SUFFIX CASE 751 EN CO 18 VS BST BG TG PGND DRN http://onsemi.com 5351 ALYW 1 8 1 8 QFN−10 MN SUFFIX CASE 485C 5351 ALYW 1 DRN TG N/C BST CO GND BG EN 110 QFN−10 SO−8 1 10 QFN−10 2500 Tape & Reel NCP5351MNR2 †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. N/C VS |
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