800mA Synchronous Step-Down Converter CXSD62347 CXSD62348 CXSD62349 is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture

   产品概述 返回TOPIof嘉泰姆

The CXSD62347 CXSD62348 CXSD62349 is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to <1uA in shutdown. The 2.5V to 6V input voltage range makes the CXSD62347 CXSD62348 CXSD62349 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple voltage for noise sensitive applications.Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.The CXSD62347 CXSD62348 CXSD62349 is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version.

   产品特点 返回TOPIof嘉泰姆

 High Efficiency: Up to 96% Iof嘉泰姆

 2.5V to 6V Input Voltage Range Iof嘉泰姆

 1.5MHz Constant Frequency Operation Iof嘉泰姆

 No Schottky Diode Required Iof嘉泰姆

 Low Dropout Operation:100% Duty Cycle Iof嘉泰姆

 PFM Mode for High Efficiency in Light Load Iof嘉泰姆

 Over temperature Protected Iof嘉泰姆

 Low Quiescent Current: 40μA Iof嘉泰姆

 Short Circuit Protection Iof嘉泰姆

 Inrush Current Limit and Soft Start Iof嘉泰姆

 SOT23-5 package Iof嘉泰姆

 Max Output Current:0.8AIof嘉泰姆

   应用范围 返回TOPIof嘉泰姆

 Cellular and Smart Phones Iof嘉泰姆

 Wireless and DSL Modems Iof嘉泰姆

 PDAs  Portable Instruments Iof嘉泰姆

 Digital Still and Video Cameras Iof嘉泰姆

 PC CardsIof嘉泰姆

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