NB679AGD Datasheet | Monolithic Power Systems

DESCRIPTION The NB679A is a fully integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter with a fixed 5.1V output and low-power mode voltage scaling. It offers a very pact solution to achieve an 8A continuous output current and a 10A peak output current over a wide input supply range with excellent load and line regulation. The NB679A 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. The NB679A provides a fixed 5V 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 a QFN-12 2mm x 3mm package. FEATURES - Wide 5.5V to 28V Operating Input Range - Fixed 5.1V Vout (+2% of 5V Vout) - LP# Output Voltage Scaling (-3% of 5V Vout) - Supports Large Duty Operation - Ultrasonic Mode - 100μA Low Quiescent Current - 8A Continuous Output Current and 10A Peak Output Current - Adaptive COT for Fast Transient - DC Auto-Tune Loop - Stable with POSCAP and Ceramic Output Capacitors - Built-In 5V, 100m A LDO with Switch Over - 1% Reference Voltage - Internal Soft Start - Output Discharge - 700k 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 - Flat Panel Televisions 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...