NCP1579

NCP1579 Low Voltage Synchronous Buck Controller The NCP1579 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. This 8−pin device provides an optimal level of integration to reduce size and cost of the power supply. The NCP1579 provides a 1 A gate driver design and an internally set 275 kHz oscillator. In addition to the 1 A gate drive capability, other efficiency enhancing features of the gate driver include adaptive non−overlap circuitry. The device also incorporates an externally compensated error amplifier and a capacitor programmable soft−start function. Protection features include programmable short circuit protection and undervoltage lockout (UVLO). The NCP1579 comes in an 8−pin SOIC package. Features Input Voltage Range from 4.5 to 13.2 V 275 kHz Internal Oscillator Boost Pin Operates to 30 V Voltage Mode PWM Control 0.8 V ±2.0 % Internal Reference Voltage Adjustable Output Voltage Capacitor Programmable Soft−Start Internal 1 A Gate Drivers 80% Max Duty Cycle Input Under Voltage Lockout Programmable Current Limit These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Applications STB Blue−Ray DVD LCD_TV DSP & FPGA Power Supply DC−DC Regulator Modules http://onsemi.com 8 1 MARKING DIAGRAM 8 SOIC−8 D SUFFIX CASE 751 1579 ALYW G 1 1579 = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G ...