NCP1580DR2 ON Semiconductor, NCP1580DR2 Datasheet
NCP1580DR2
Specifications of NCP1580DR2
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NCP1580DR2 Summary of contents
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... View) ORDERING INFORMATION Device Package Shipping NCP1580DR2 SOIC−8 2500/Tape & Reel NCP1580DR2G SOIC−8 2500/Tape & Reel (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. ...
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PHASE BST COMP TG FB GND Figure 2. Application Diagram Input, 1 Output FAULT OSC SS ...
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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 1.0 nF, for min/max values unless otherwise noted Characteristic Input Voltage Range Boost Voltage Range Supply Current Quiescent Supply Current Boost Quiescent Current Undervoltage Lockout UVLO Threshold UVLO Hysteresis Switching Regulator VFB ...
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TYPICAL CHARACTERISTIC CURVES 816 812 808 804 800 796 792 788 784 −50 − JUNCTION TEMPERATURE ( C) J Figure 4. Reference Voltage (V Temperature 2.20 2.15 2. ...
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General The NCP1580 is an 8−pin PWM controller intended for DC−DC conversion from 5.0 V and 12 V buses. The NCP1580 has a 1.5 A internal floating gate driver circuit designed to drive N−Channel synchronous−rectifier buck topology. The internal floating ...
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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 NCP1580, the UVLO is set to ensure that the IC will start up when ...
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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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VOUT Figure 13. The relationship between the resistor divider network in Figure 13 and the output voltage is shown in the following equation: V REF OUT * V REF Resistor R1 ...
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Thermal Considerations The power dissipation of the NCP1580 varies with the MOSFETs used and the boost voltage (V CC average MOSFET gate current typically dominates the control IC power dissipation. The IC power dissipation is determined by the ...
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Layout Considerations As in any high frequency switching converter, layout is very important. Switching current from one power device to another can generate voltage transients across the impedances of the interconnecting bond wires and circuit traces. These interconnecting impedances should ...
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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. “ ...