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NCP1580DR2G Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1580DR2G Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 12 page © Semiconductor Components Industries, LLC, 2005 January, 2005 − Rev. 4 1 Publication Order Number: NCP1580/D NCP1580 Low Voltage Synchronous Buck Controller The NCP1580 is a voltage mode PWM controller designed to operate from a 5.0 V or 12 V supply and produce an output voltage as low as 0.8 V. This 8−pin device provides an optimal level of integration to reduce size and cost of the power supply. The NCP1580 has a fixed 350 kHz oscillator and soft−start function. The NCP1580 provides a 1.5 A floating gate driver design to drive N−Channel MOSFETs in a synchronous configuration. Adaptive non−overlap circuitry reduces switching losses by preventing simultaneous conduction of both outputs. Protection features include thermal shutdown and undervoltage lockout (UVLO). The NCP1580 is available in an 8−pin SOIC package. Features • Input Voltage Range from 4.5 V to 13.2 V • 350 kHz Internal Oscillator • Boost Pin Operates to 26.5 V • Voltage Mode PWM Control • 0.8 V $1.5% Internal Reference Voltage • Adjustable Output Voltage • Internal Soft−Start • Internal 1.5 A Gate Drivers • Adaptive Non−Overlap Circuit • 90% Max Duty Cycle • Input UVLO • Overtemperature Protection • Fully Specified over −40°C to 85°C • Pb−Free Package is Available Applications • Graphics Cards • Desktop Computers • Servers/Networking • DSP and FPGA Power Supply • DC−DC Regulator Modules BST TG GND BG COMP FB VCC SWN VIN VOUT Figure 1. Typical Application Diagram SOIC−8 D SUFFIX CASE 751 1 8 MARKING DIAGRAM PIN CONNECTIONS A = Assembly Location L = Wafer Lot Y = Year W = Work Week 1 BST 8 PHASE 2 TG 3 GND 4 BG 7 COMP 6 FB 5 VCC (Top View) 1580 ALYW Device Package Shipping† ORDERING INFORMATION NCP1580DR2 SOIC−8 2500/Tape & Reel †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. NCP1580DR2G SOIC−8 (Pb−Free) 2500/Tape & Reel 1 8 http://onsemi.com |
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