NB681GD-Z

The NB681 is a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with 2-bit VID, especially designed for IMVP8 applications—VCCIO, PRIMCORE, V1.0A, EDRAM, and EOPIO. It offers a very compact solution to achieve a 6A continuous output current and a 7.5A peak output current over a wide input supply range. The NB681 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. To avoid audible noise, NB681 provides lowpower mode for power loss saving during the low-power state and ultrasonic mode. Full protection features include OC limit, OVP, UVP, and thermal shutdown. The converter requires a minimal number of external components, and it is available in a QFN 2mm x 3 mm package.

Wide 4.5V to 26V Operating Input Range VCCIO/PRIMCORE/EDRAM/EOPIO/V1.0A Compatible for IMVP8 Output Adjustable by 2-Bit VID Low-Power Mode 25µA Low Quiescent Current 6A Continous Output Current 7.5A Peak Output Current Selectable Ultrasonic Mode Adaptive COT for Fast Transient DC Auto-Tune Loop Stable with POSCAP and Ceramic Capacitors 1% Reference Voltage Internal Soft Start Output Discharge OCL, OVP, UVP, and Thermal Shutdown, Latch-Off Reset via EN or Power Cycle QFN 2mm x 3mm Package