Fit the American semiconductor full of trees and introduce subminiature 3MHz synchronous step-down type direct current- Direct-flow converter
ON Semiconductor it puts out two fund to be walkie to employ high-performance pulse length modulation that optimize specially Add pulse frequency modulation (PFM) Converters direct-flow direct current of and only PWM function,it last that ripple voltages ultralow it incoherent signal voltage output and fast transient to react, new NCP1523 equal to NCP1523B is for instance, suit application which pays attention to the power consumption such as the miniature hard disk in the walkie playing device of the multimedia. NCP1523 and NCP1523B have high-speed switching frequency of 3 MHz, so can match and fall as low as a little Henry (μ H) Midget inductor, device relatively getting up to 93% in more offering by way of commutating synchronously efficiency, have lengthened the duration of battery and saved the externally positioned component to count. In order to meet microprocessor power of the medium-altitude requirement of the portable electronics effectively, these new direct current - direct current changes the fully quite fast response time of utensil. NCP1523 has PWM/PFM automatic conversion scheme of system efficiency while raising light load, but PWM mode adopted in NCP1523B can bring efficient defeat transient solution and ripple voltage of low output, in addition, such functions as integrated soft turn on, the current limiter and overheated automatic shutdown of Cycle by Cycle are protected of these new devices. Fit the American semi-conductive figure full of trees to consume to the marketing director Hyung-Sup Kim of product division and represent: "These new converters can meet customer's strict requirement on characteristic and size of walkie electronic product. NCP1523 device not merely can satisfy the walkie electricity Sub the intersection of product and tight severe power requirement, can until one of the minimum capsulation offer remarkable high efficiency display at the market at present also. "