NCP1589L Datasheet | onsemi

Low Voltage Synchronous Buck Controller with Light Load Efficiency and Transient Enhancement The NCP1589L 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 k Hz 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 puters - Servers / Networking - DSP & FPGA Power Supply - DC- DC Regulator Modules http://onsemi. MARKING DIAGRAM DFN10 CASE 485C 1589L ALYWG 1589L A L Y W = Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week = Pb- Free...