NB679GD Datasheet | Monolithic Power Systems

DESCRIPTION The NB679 is a fully integrated, high-frequency, synchronous, rectified, step-down switch-mode converter with a fixed 5 V output. It offers a very pact solution to achieve 8 A continuous output current and 10 A peak output current over a wide input supply range with excellent load and line regulation. The NB679 operates at high efficiency over a wide output current load range based on MPS proprietary switching loss reduction technology and internal low Ron power MOSFETs. Adaptive constant-on-time (COT) control mode provides fast transient response and eases loop stabilization. The DC auto-tune loop provides good load and line regulation. NB679 provides a fixed 5 V LDO, which can be used to power the external peripheries. Full protection features include OC limit, OVP, UVP, and thermal shutdown. The converter requires a minimum number of external ponents and is available in QFN 2mm x 3mm package. FEATURES - Wide 5.5 V to 28 V Operating Input Range - Fixed 5 V Vout - Supports 5.5 V-5 V - Ultrasonic Mode with Fs over 25 k Hz - 100 μA Low Quiescent Current - 8 A Continous Output Current - 10 A Peak Output Current - Adaptive COT for Fast Transient - DC Auto-Tune Loop for Load Regulation - Stable with POSCAP and Ceramic Output Capacitors - Built-In 5 V, 100 m A LDO with Switch Over - 1% Reference Voltage - Internal Soft Start - Output Discharge - 700 k HZ Switching Frequency - OCP, OVP, UVP, and Thermal Shutdown. - Latch-Off Reset via EN or Power Cycle - QFN-12 (2mm x 3mm) Package APPLICATIONS - Laptop puters - Tablet PCs - Networking Systems - Personal Video Recorders - Flat Panel Television and Monitors - Distributed Power Systems All MPS parts are lead-free, halogen-free, and adhere to the Ro HS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 5.5 V-24 V 22...