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NCP1589D Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1589D Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 8 page © Semiconductor Components Industries, LLC, 2011 July, 2011 − Rev. 1 1 Publication Order Number: NCP1589D/D NCP1589D Low Voltage Synchronous Buck Controller with Light Load Efficiency and Transient Enhancement The NCP1589D is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V and converting voltage from as low as 2.5 V. It is easy to operate and provides an optimal level of integration to reduce size and cost of the power supply. It operates in Ramp Pulse Modulation mode for superior load step and release response. In addition to fast transient response, it also includes a 1.5 A gate driver design and light load efficiency features such as adaptive non−overlap circuitry and diode emulation. It normally operates at a range of 200−500 kHz in continuous current conduction mode, which reduces with current at light load for further power saving. Protection features include programmable overcurrent protection, output overvoltage and undervoltage protection and input undervoltage lockout (UVLO). Features • VCC Range from 4.5 V to 13.2 V • Adjustable Operating frequency • Boost Pin Operates to 35 V • Ramp Pulse Modulation Control • Precision 0.8 V Internal Reference • Adjustable Output Voltage • Internal 1.5 A Gate Drivers • 80% Max Duty Cycle • Input Under Voltage Lockout • Programmable Current Limit • Adaptive Diode Mode Emulation in Light Load • This is a Pb−Free Device Applications • Graphics Cards • Desktop Computers • Servers / Networking • DSP & FPGA Power Supply • DC−DC Regulator Modules DFN10 CASE 485C MARKING DIAGRAM PIN CONNECTIONS 1589D = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Device 1 BOOT 10 PGOOD 2 LX 3 UG 4 LG 9 VORPM 8FB 7 COMP/EN (Top View) Device Package Shipping† ORDERING INFORMATION †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. http://onsemi.com 5 GND 6 VCC (Note: Microdot may be in either location) NCP1589DMNTWG DFN10 (Pb−Free) 3000 / Tape & Reel 1589D ALYWG G Flag |
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