The ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845 family of adjustable frequency, low power, pulse width modulating (PWM) current mode controllers is designed for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Peak current mode control effectively handles power transients and provides inherent overcurrent protection. This advanced BiCMOS design is pin compatible with the industry standard 384x family of controllers and offers significantly improved performance. Features include low operating current, 60μA start-up current, adjustable operating frequency to 2MHz, and high peak current drive capability with 20ns rise and fall times.

Features

? 1A MOSFET Gate Driver

? 60μA Start-up Current, 100μA Maximum

? 25ns Propagation Delay Current Sense to Output

? Fast Transient Response with Peak Current Mode Control

? Adjustable Switching Frequency to 2MHz

? 20ns Rise and Fall Times with 1nF Output Load

? Trimmed Timing Capacitor Discharge Current for Accurate Deadtime/Maximum Duty Cycle Control

? High Bandwidth Error Amplifier

? Tight Tolerance Voltage Reference Over Line, Load, and Temperature

? Tight Tolerance Current Limit Threshold

? Pb-Free Available (RoHS Compliant)

Applications

? Telecom and Datacom Power

? Wireless Base Station Power

? File Server Power

? Industrial Power Systems

? PC Power Supplies

? Isolated Buck and Flyback Regulators

? Boost Regulators

Package 8 LD SOIC, MSOP

Package 8 LD DFN

ISL6840屬于集成電路（IC） > PMIC - 穩(wěn)壓器 - DC DC 開關(guān)式控制器。瑞薩科技有限公司制造生產(chǎn)的ISL6840DC-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。其他拓撲結(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。