NCV881930中文资料低静态电流 410 kHz 汽车同步降压控制器数据手册ONSEMI规格书

描述 Description

The NCV881930 is a 410 kHz fixed−frequency low quiescent current buck controller with spread spectrum that operates up to 38 V (typical). It may be synchronized to a clock or to separate
NCV881930. Peak current mode control is employed for fast transient response and tight regulation over wide input voltage and output load ranges. Feedback compensation is internal to the device, permitting design simplification. The NCV881930 is capable of converting from an automotive input voltage range of 3.5 V (4.5 V during startup) to 18 V at a constant base switching frequency. Under load dump conditions up to 45 V the regulator shuts down. A high voltage bias regulator with automatic switchover to an external 5 V bias supply is used for improved efficiency. Several protection features such as UVLO, current limit, short circuit protection, and thermal shutdown are provided. High switching frequency produces low output voltage ripple even when using small inductor values and an all−ceramic output filter capacitor, forming a space−efficient switching solution.solution.
(2 MHz version offered with NCV891930)

特性 Features

• 30µA Operating Current at No Load
• 50 mV Current Limit Sensing
• Capable of 45 V Load Dump
• Board Selectable Fixed Output Voltages With Lockout
• 410 kHz Operating Frequency with synchronization capability
• Adaptive Non−Overlap Circuitry
• Integrated Spread Spectrum
• Logic level Enable Input Can be Tied Directly to Battery
• Short Circuit Protection Pulse Skip
• Battery monitoring for UVLO and Overvoltage Protection
• Thermal Shutdown (TSD)
• Adjustable Soft−Start
• Individual Enable and Reset pins
• QFN Package with Wettable Flanks (pin edge plating)
• NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

应用 Application

• Radio and Infotainment
• Telematics
• ADAS (safety applications)
• Instrumentations & Clusters
• Automotive

简介

NCV881930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NCV881930DC-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。