2A Synchronous Step-Down Converter CXSD61040B high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture.

   产品概述 返回TOPa8q嘉泰姆

The CXSD61040B 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 5.5V input voltage range makes the CXSD61040B 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 1.2/2.4MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.

The CXSD61040B 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TOPa8q嘉泰姆

 High Efficiency: Up to 96% a8q嘉泰姆

 2.5V to 5.5V Input Voltage Range a8q嘉泰姆

 1.2/2.4MHz Constant Frequency Operation a8q嘉泰姆

 No Schottky Diode Required a8q嘉泰姆

 Low Dropout Operation:100% Duty Cycle a8q嘉泰姆

 PFM Mode for High Efficiency in Light Load a8q嘉泰姆

 Over temperature Protected a8q嘉泰姆

 Low Quiescent Current: 40μA a8q嘉泰姆

 Short Circuit Protection a8q嘉泰姆

 Over Voltage Protection a8q嘉泰姆

 Inrush Current Limit and Soft Start a8q嘉泰姆

 Available in SOT23-5 Package a8q嘉泰姆

 Max Output Current:2Aa8q嘉泰姆

   应用范围 返回TOPa8q嘉泰姆

 Cellular and Smart Phones a8q嘉泰姆

 Wireless and DSL Modems a8q嘉泰姆

 PDAs a8q嘉泰姆

 Portable Instruments a8q嘉泰姆

 Digital Still and Video Cameras a8q嘉泰姆

 PC Cardsa8q嘉泰姆

   技术规格书（产品PDF) 返回TOP a8q嘉泰姆

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