Hot-selling and scarce NB650AGL-Z High-Effeciency, Fast-Transient, 6A, 28V Synchronous Step-Down Converters with 2-Bit VID QFN

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The NB650A is fully-integrated, high-frequency, synchronous, rectified, step-down, switch-mode converters with dynamic-output–voltage control. It offers a very compact solution to achieve 6A of continuous output current over a wide input supply range, and has excellent load and line regulation. The NB650A operates at high efficiency over a wide output-current–load range.

Constant-On-Time control mode provides fast transient response and eases loop stabilization.

2-bit VID inputs support changing the output voltage on-the-fly.

Full protection features include short-circuit protection, over-current protection, over-voltage protection, under-voltage protection, and thermal shut down.

The NB650A requires a minimal number of readily-available standard external components, and is available in a space-saving 3mm×4mm QFN17 package.

Product Features

• Wide 4.5V-to-28V Operating Input Range

• 6A Output Current

• Internal 50mΩ High-Side, 18mΩ Low-Side Power MOSFETs

• Proprietary Switching Loss Reduction Technique

• 1 percent Reference Voltage

• Programmable Soft-Start Time

• 2-bit VID Input

• Soft Shutdown

• Frequency Programmable from 150kHz to 1MHz

• SCP, OCP, OVP, UVP, and Thermal Shutdown

• Optional OCP Protection: Latch-Off Mode

• Output Adjustable from 0.6V to 13V

• Available in QFN17 (3mm×4mm) Package

Product Applications

• Notebook Systems and I/O Power

• Networking Systems

• Digital Set Top Boxes

• Flat-Panel Televisions and Monitors

• Distributed Power Systems

Product Specification

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