NCV8873中文资料非同步升压控制器，汽车级数据手册ONSEMI规格书

描述 Description

The NCV8873 is an adjustable output non-synchronous boost controller which drives an external N-channel MOSFET.The device uses peak current mode control with internal slope compensation.The IC incorporates an internal regulator that supplies charge to the gate driver.Protection features include internally-set soft-start, undervoltage lockout, cycle-by-cycle current limiting and thermal shutdown.Additional features include low quiescent current sleep mode and externally-synchronizable switching frequency.

特性 Features

• Peak Current Mode Control with Internal Slope Compensation
• LED PWM dimming capable
• 0.2 V 2% Reference Voltage for Constant Current Loads
• Good transient response over a wide input voltage and load range
• Wide Input Voltage Range of 3.2 V to 45 V
• Accurate current/voltage regulation
• Input Undervoltage Lockout
• Works in a wide variety of applications
• Internal Soft Start
• Disables startup in undervoltage conditions
• Low Quiescent Current in Sleep Mode
• Decreases inrush current
• Cycle by Cycle Current Limit Protection
• Very low off current
• Hiccup Mode Overcurrent Protection
• Protects against over current conditions
• Thermal Shutdown
• Thermally protects IC

应用 Application

• LED Lighting, Backlighting, Headlamps
• Start-Stop Systems
• Boost, SEPIC (Non-Inverting Buck Boost)
• Direct Gas Injection
• Automotive Systems

简介

NCV8873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NCV8873DC-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。