NB675数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The NB675 provides a complete power supply for DDR3, DDR3L and LPDDR2 memory with the highest power density. It integrates a high frequency synchronous rectified step-down switch mode converter (VDDQ) with an 1.5A sink/source LDO (VTT) and buffered low noise reference (VTTREF). The fully integrated Buck converter is able to deliver 10A continuous output current and 12A peak output current over a wide input supply range with excellent load and line regulation. The Buck converter employs the Constant-On-Time (COT) control scheme, which provides fast transient response and eases loop stabilization. The VTT LDO provides 1.5A sink/source current capability and requires only 10uF ceramic capacitance. The VTTREF tracks VDDQ/2 with an excellent 1% accuracy. Under voltage lockout is internally set as 4.5V. An open drain power good signal indicates VDDQ is within its nominal voltage range. Full protection features include OCP, OVP, and thermal shut down. This part requires minimum number of external components and is available in QFN21 (3mmx4mm) package.

特性 Features

• Wide 5V to 24V Operating Input Range
• 10A Continuous Output Current
• 12A Peak Output Current
• Built-in +/- 1.5A VTTLDO
• Low RDS(ON) Internal Power MOSFETs
• Proprietary Switching Loss Reduction Technique
• Internal Soft Start
• Output Discharge
• 500kHZ Switching Frequency
• OCP, OVP, UVP Protection and Thermal Shutdown
• VDDQ Adjustable from 0.604V to 5.5V

简介

NB675属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的NB675稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。