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

應(yīng)用 Application

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

簡(jiǎn)介

NCV8873屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器。由制造生產(chǎn)的NCV8873DC-DC 開關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。