NCP5211中文资料Synchronous PWM Buck Controller数据手册ONSEMI规格书

描述 Description

The NCP5211 is a low voltage synchronous buck controller. It contains all required circuitry for a synchronous buck converter using external N-Channel MOSFETs. High current internal gate drivers are capable of driving high gate capacitance of low RDS(on) NFETs for better efficiency. The NCP5211 is in a 14-pin package to allow the designer added flexibility.

The NCP5211 provides overcurrent protection, undervoltage lockout, Soft-Start and built in adaptive nonoverlap.

The NCP5211 also provides adjustable fixed frequency range of 150 kHz to 750 kHz. This gives the designer more flexibility to make efficieny and component size compromises. The NCP5211 will operate over a 4.5 V to 14 V range using either single or dual input voltage. (direct replacement for CS5211)

特性 Features

♦ Switching Regulator Controller
♦ N−Channel Synchronous Buck Design
♦ V2 Control Topology
♦ 200 ns Transient Response
♦ Programmable Fixed Frequency of 150 kHz−750 kHz
♦ 1.0 V 1.5% Internal Reference
♦ Lossless Inductor Sensing Overcurrent Protection
♦ Hiccup Mode Short Circuit Protection
♦ Programmable Soft−Start
♦ 40 ns GATE Rise and Fall Times (3.3 nF Load)
♦ 70 ns Adaptive FET Nonoverlap Time
♦ Differential Remote Sense Capability
• System Power Management
♦ 5.0 V or 12 V Operation
♦ Undervoltage Lockout
♦ On/Off Control Through Use of the COMP Pin
• Pb−Free Packages are Available*

简介

NCP5211属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的NCP5211DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。