Step-Up Converter with 1.1A Switch CXSU63218 is a constant frequency, current mode, synchronous step-up switching regulator. Its output currents can go as high as 75mA while using a single-cell alkali

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The CXSU63218 is a constant frequency, current mode, synchronous step-up switching regulator. Its output currents can go as high as 75mA while using a single-cell alkaline, and discharge it down to 0.9V. It can also be used for generating 5V at 400mA from a 3.3V rail or a Li-ion battery.3R1嘉泰姆

High switching frequency minimizes the sizes of inductor and capacitor. Integrated power MOSFETs and internal compensation make the CXSU63218 simple to use and fit the total solution into a compact space.3R1嘉泰姆

For light load current, the CXSU63218 enters into the power-save mode to maintain high efficiency. Anti-ringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode. The CXSU63218 provides true output disconnect and this allows V_OUT to go to zero volt during shutdown without drawing any current from the input source.3R1嘉泰姆

The output voltage of CXSU63218-ADJ can be programmed by an external resistor divider, and those of CXSU63218-3.3/CXSU63218-5.0 are fixed internally on the chip. The device is available in Green SOT-23-6 package. It operates over an ambient temperature range of -40℃</span> to +85℃</span>3R1嘉泰姆

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• 90% Efficient Synchronous Boost Converter
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• Device Quiescent Current: 30μA (TYP)
• Less than 1μA Shutdown Current
• Input Voltage Range: 0.9V to 5.5V
• 3.3V and 5.0V Fixed Output Voltages
• Output Voltage Clamping: 6V
• Adjustable Output Voltage Up to 5.5V
• Power-Save Mode for Improved Efficiency at Low
   Output Power
• Load Disconnect During Shutdown
• Over-Temperature Protection
• Available in Green SOT-23-6 Package
• -40℃</span> to +85℃</span> Operating Temperature Range3R1嘉泰姆

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Single-Cell Li Battery Powered Products
Portable Audio Players
Cellular Phones
Personal Medical Products3R1嘉泰姆

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