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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、升压型DC/DC调整器。电路由电流模PWM控制环路，误差放大器，斜波补偿电路，比较器和功率开关等模块组成。该芯片可在较宽负载范围内高效稳定的工作，内置一个4A的功率开关和软启动保护电路。高达93％的转换效率能够高效的延长电池寿命。可以通过调整两个外加电阻来设定输出电压。

产品概述: CP870系列产品是一款低功耗、高效率、低纹波、工作频率高的 PFM 控制升压DC-DC 变换器。 CP870系列产品仅需要3个外部元器,即可完成低输入的电池电压输入。

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.