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2.5A输出电流500KHz同步升压转换器CXSU63041B同步和嵌入式功率mosfet内部软启动以限制涌入电流 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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目录产品概述 返回TOP The CXSU63041 devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter generates a stable output voltage that is either adjusted by an external resistor divider. It provides high efficient power conversion and is capable of delivering output currents up to 1.5A at 5V at a supply voltage down to 2V. The implemented boost converter is based on a fixed switching frequency (500kHz typical), current-mode controller using a synchronous rectifier to obtain maximum efficiency. Boost switch and rectifier switch are connected internally to provide the lowest leakage inductance and best EMI behavior possible. The current-mode control scheme provides fast transient response and good output voltage accuracy. At light load, the converter will automatically enter into Pulse Frequency Modulation (PFM) operation to reduce the dominant switching losses. During PFM operation, the IC consumes very low quiescent current and maintains high efficiency over a wide load current range. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. The device allows use of small inductors and output capacitors for USB devices.产品特点 返回TOP 97% Efficiency at VOUT=5V from 3.3V Input Device Quiescent Current: 37μA (Typ) Guaranteed 2.5A Output Current at VOUT=5V from 3.3V Input 500kHz PWM Switching Frequency Synchronous and Embedded Power MOSFETs, No Schottky Diode Required Low RDS(ON) (main switch/synchronous switch) at 5.0V output: 20/40mohm Input Voltage Range: 1.8V to 5.25V Adjustable Output Voltage Range: from 2.5V to 5.5V Pulse Frequency Modulation Operation for Improved Efficiency at Low Output Power Current Mode Operation with Internal Compensation for Excellent Line and Load Transient Response Logic Controlled Shutdown(<1μA) Load Disconnect During Shutdown Automatic output discharge at shutdown: CXSU63041A: Auto output discharge function CXSU63041B: No output discharge function Low Battery Comparator Internal Soft-Start to Limit Inrush Current Over Current Protection Input Under Voltage Lockout Output Over Voltage Protection Over-Temperature Protection Available in 2.1mm x 2.1mm QFN10 Package 应用范围 返回TOP All Single Cell Li or Dual Cell Battery Operated Products as Tablet PC, Smartbook and Other Portable Equipment Products including portable HDMI and USB-OTG USB Hosts Without Native 5V Supplies USB Charging Port (5V) Power Bank, Battery Backup Units Wireless Peripherals Portable Audio Players Personal Medical Devices Industrial Metering Equipments DC/DC Micro Modules 技术规格书（产品PDF) 返回TOP 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ 产品封装图 返回TOP
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2.5A输出电流500KHz同步升压转换器CXSU63041B同步和嵌入式功率mosfet内部软启动以限制涌入电流
发表时间：2020-06-05浏览次数：80
