CXSU63177 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

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The CXSU63177 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 adjusted by an external resistor divider or fixed internally on the chip. It provides high efficient power conversion and is capable of delivering output currents up to 1 A at 5 V at a supply voltage down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width- modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the converter enters Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. It can also operate synchronized to an external clock signal that is applied to the SYNC pin. the maximum peak current in the boost switch is limited to a value of 5000 mA. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The device is packaged in a 16-pin QFN package measuring 4 mm x 4 mm (RSA) or in a 16-pin TSSOP16.or in a DFN3x3-12 packages

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 92% Efficient Synchronous Boost Converter With 1000-mA Output Current From 1.8-V Input VSf嘉泰姆

 Device Quiescent Current: 20-μA (Typ) VSf嘉泰姆

 Input Voltage Range: 1.8-V to 5.5-V VSf嘉泰姆

 Adjustable Output Voltage Options Up to 5.5-V VSf嘉泰姆

 Power Save Mode for Improved Efficiency at Low Output Power VSf嘉泰姆

 Low Battery Comparator VSf嘉泰姆

 Low EMI-Converter (Integrated Antiringing Switch) VSf嘉泰姆

 Load Disconnect During Shutdown VSf嘉泰姆

 Over-Temperature Protection VSf嘉泰姆

 Available in a Small 4 mm x 4 mm QFN-16 or in a TSSOP-16 or in a DFN3*3-12 packageVSf嘉泰姆

   应用范围 返回TOPVSf嘉泰姆

 Power Bank VSf嘉泰姆

 Tablet VSf嘉泰姆

 Portable EquimentVSf嘉泰姆

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