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The CP2139 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is applicable to applications requiring high efficiency and high output current. The CP2139 series switches its opera

CP3608是一款微小型、高效率、升壓型DC/DC調(diào)整器。電路由電流模PWM控制環(huán)路，誤差放大器，斜波補(bǔ)償電路，比較器和功率開(kāi)關(guān)等模塊組成。該芯片可在較寬負(fù)載范圍內(nèi)高效穩(wěn)定的工作，內(nèi)置一個(gè)4A的功率開(kāi)關(guān)和軟啟動(dòng)保護(hù)電路。高達(dá)93％的轉(zhuǎn)換效率能夠高效的延長(zhǎng)電池壽命?？梢酝ㄟ^(guò)調(diào)整兩個(gè)外加電阻來(lái)設(shè)定輸出電壓。

產(chǎn)品概述: CP870系列產(chǎn)品是一款低功耗、高效率、低紋波、工作頻率高的 PFM 控制升壓DC-DC 變換器。 CP870系列產(chǎn)品僅需要3個(gè)外部元器,即可完成低輸入的電池電壓輸入。

General Description CP3470 is a fully integrated, high– efficiency 2A synchronous rectified step-down converter. The CP3470 operates at high efficiency over a wide output current load range. This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.