NCP1579DR2G ON Semiconductor, NCP1579DR2G Datasheet
NCP1579DR2G
Specifications of NCP1579DR2G
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NCP1579DR2G Summary of contents
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... Pb−Free Device PIN CONNECTIONS BST GND (Top View) ORDERING INFORMATION Device Package NCP1579DR2G SOIC−8 (Pb−Free) †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. 1 MARKING DIAGRAM 8 1579 ALYW G 1 ...
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Figure 1. Typical Application Diagrams 0 REF COMP/DIS 3 BST FB COMP/DIS TG PHASE BG GND V CC BST FB COMP/DIS TG PHASE BG GND POR ...
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PIN FUNCTION DESCRIPTION Pin No. Symbol 1 BST Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin). Connect ...
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ELECTRICAL CHARACTERISTICS 0 V < PHASE < 1.0 nF, for min/max values unless otherwise noted Characteristic Input Voltage Range Boost Voltage Range Supply Current Quiescent Supply Current V Boost Quiescent Current V ...
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TYPICAL CHARACTERISTICS 5.0 4.7 4.4 4.1 3.8 3 JUNCTION TEMPERATURE (°C) J Figure 3. I vs. Temperature JUNCTION ...
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General The NCP1579 is a PWM controller intended for DC−DC conversion from 5.0 V & buses. The devices have internal gate driver circuit designed to drive N−channel MOSFETs in a synchronous−rectifier buck topology. The output ...
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UVLO Undervoltage Lockout (UVLO) is provided to ensure that unexpected behavior does not occur when V support the internal rails and power the converter. For the NCP1579, the UVLO is set to permit operation when converting from a 5.0 input ...
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Input Capacitor Selection The input capacitor has to sustain the ripple current produced during the on time of the upper MOSFET must have a low ESR to minimize the losses. The RMS value of this ripple is: Iin ...
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In contrast, smaller values of inductance increase the regulator’s maximum achievable slew rate and decrease the necessary capacitance, at the expense of higher ripple current. The peak-to-peak ripple current for NCP1579 is given by the following ...
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P = control IC power dissipation measured supply current supply voltage top gate driver losses bottom gate driver losses. BG The upper (switching) MOSFET gate driver ...
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... *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...