NCP1580

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 VIN http://onsemi.com 8 1 SOIC−8 D SUFFIX CASE 751 MARKING DIAGRAM 8 1580 ALYW 1 A = Assembly Location L = Wafer Lot Y = Year W = Work Week PIN CONNECTIONS BST 1 TG 2 GND 3 BG 4 8 PHASE 7 COMP 6 FB 5 VCC (Top View) ORDERING I...