NCP3133A中文资料3 A 集成式同步降压转换器数据手册ONSEMI规格书

描述 Description

NCP3133A is a fully integrated synchronous buck converter for 3.3 V and 5 V step−down applications. It can provide up to 3 A load current. NCP3133A supports high efficiency, fast transient response and provides power good indicator. The control scheme includes two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can smoothly switch between CCM and DCM, where converter runs at reduced switching frequency with much higher efficiency.

特性 Features

• High Efficiency in both CCM and DCM
• Perfromance
• Support MLCC Output Capacitor
• Lower system cost
• High Operation Frequency at 1.1 MHz
• Small Footprint, 3 mm x 3 mm, 16−pin QFN Package
• Up to 3 A Continuous Output Current
• 2.9 V to 5.5 V Wide Conversion Voltage Range
• Output Voltage Range from 0.6 V to 0.84 X Vin
• Internal 400 µs Soft−Start
• Automatic Power−Saving Mode
• Voltage Mode Control
• Support Pre-bias Start−up Functionality
• Output Discharge Operation
• Over−Temperature Protection
• Built−in Over−Voltage, Under−Voltage and Over-Current Protection
• Power Good Indicator

应用 Application

• 5 V Step Down Rail
• 3.3 V Step Down Rail
• Servers
• Desktop and notebook computers
• Networking Systems

简介

NCP3133A属于集成电路（IC）的DCDC开关稳压器。由制造生产的NCP3133A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。