Monolithic Power Systems NB682

Description

The NB682 is a fully integrated, high frequency synchronous rectified step-down switch mode converter with 2-Bit VID, especially designed for IMVP8 applications-V1.0A, VCCIO, PRIMCORE, EDRAM and EOPIO, and other POLs(1.8V,2.5V,3.3V). It offers very compact solution to achieve 3A continuous output current and 4A peak output current over a wide input supply range. The NB682 operates at high efficiency over a wide output current load rang based on MPS proprietary switching loss reduction tech 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. NB682 also provides a Low Power Mode for power loss saving during the low power state and Ultrasonic Mode to avoid audible noise. Full protection features include OC Limit, OVP, UVP and thermal shut down. The converter requires minimum number of external components and is available in QFN 2x3 packages

Features

Wide 4.5V to 26V Operating Input Range

• VCCIO/PCH/EDRAM/EOPIO/1.8V/2.5V/3.3V/ V1.0A compatible for IMVP8
• Output adjustable by 2-Bit VID
• Low Power Mode/25uA low quiescentCurrent
• 3A Continous Output Current
• 4A Peak Output Current
• Selectable Ultrasonic Mode
• Adaptive COT for Fast transient
• DC Auto Tune Loop
• Stable with POSCAP and Ceramic Cap
• 1% Reference Voltage
• Internal Soft Start and Output Discharge
• OCL, OVP, UVP Protection and ThermalShutdown
• Latch off reset via EN or Power Cycle

Typical applications

• Networking Systems and Server
• Personal Video Recorders
• Notebook Systems and Tablet PC
• Distributed Power Systems

More information

• Datasheet
• IC product information