600mA 同步整流降压DC/DC转换器+500mA LDO+内置延迟电路VD,600mA Synchronous Step-Down DC/DC Converter + 500mA LDO with Delay Function Voltage Detector,CXSB6615系列产品是把内装驱动晶体管的600mA同步整流降压DC/DC转换器,与由具有超高速/大电流多功能的VR和VD组合成的

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      CXSB6615系列产品是把内装驱动晶体管的600mA同步整流降压DC/DC转换器,与由具有超高速/大电流多功能的VR和VD组合成的VDR,而形成的1PKG化多功能IC。由于采用了超小型表面实装封装(USP-12B01)实现了节省空间的目的。此外,在PKG内部将DC/DC转换器和VDR部分完全分离,由此将DC/DC转换器产生的噪声对VDR的影响抑制在最小限度。DC/DC转换器部分是与陶瓷电容相对应, 内装0.42ΩPchMOS驱动晶体管及0.52ΩNchMOS开关晶体管的同步整流式。作为外装零部件只使用线圈和电容即可得到输出电流高达600mA的高效率且稳定工作的电源。VDR的VR部分是实现了高精度, 低噪声, 高纹波除去率, 低压差的CMOS工艺正电压LDO调整器IC。作为稳定输出用的电容(CL)能与陶瓷电容等低ESR的电容相对应。此外,具有良好的瞬态响应,即使在负载发生变动时也能得到稳定的输出。固定电流限定电路和反馈电路,能起到限定输出电流和保护输出端子短路的作用。VD部分的电容延迟功能还能延迟输出。可使用电容来调整延迟时间。VD部分可用来监测VR的输入电压。The CXSB6615 series is a multi combination module IC which comprises of a 600mA driver transistor built-in synchronous step–down DC/DC converter and a high speed, high current LDO regulator with voltage detector function. The device is housed in small USP-12B01 package which is ideally suited for space conscious applications. The DC/DC converter and the LDO blocks are isolated in the package so that noise interference from the DC/DC to the LDO regulator is minimal. The DC/DC converter block with a built-in 0.42ΩP-channel MOS driver transistor and 0.52ΩN-channel MOS switching transistor, designed to allow the use of ceramic capacitors. The DC/DC enables a high efficiency, stable power supply with an output current of 600mA to be configured using only a coil and two capacitors connected externally. The LDO regulator block is precise, low noise, high ripple rejection, low dropout positive voltage regulators with built-in voltage detector. The LDO is also compatible with low ESR ceramic output capacitors. Good output stability is maintained during load fluctuations due to its excellent transient response. The current limiter's fold back circuit also operates as a short circuit protection for the output current. The voltage detector block of the contains delay circuit. The delay time can be controlled by an external capacitor. The detector monitors the input voltage of the voltage regulator.KiK嘉泰姆

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