1.5MHz恒定频率电流模式同步降压转换器CXSD62309B/C/D轻载高效PFM模式2A输出电流 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
目录7.相关产品 产品概述 返回TOP The CXSD62309B is a 1.5MHz constant frequency,current mode step-down converter.It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The CXSD62309B also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. The CXSD62309B can supply up to 2A output load current from a 2.3V to 6V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation. The CXSD62309B is offered in a low profile 6-pin, SOT package, and is available in an adjustable version. This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load. 产品特点 返回TOP High Efficiency: Up to 96% 1.5MHz Constant Frequency Operation 2A Output Current No Schottky Diode Required 2.3V to 6V Input Voltage Range Output Voltage as Low as 0.6V PFM Mode for High Efficiency in Light Load 100% Duty Cycle in Dropout Operation Low Quiescent Current: 40μA Short Circuit Protection Thermal Fault Protection Inrush Current Limit and Soft Start <1μA Shutdown Current SOT23-6 package 应用范围 返回TOP Cellular and Smart Phones Wireless and DSL Modems PDAs Portable Instruments Digital Still and Video Cameras PC Cards 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 电路原理图 返回TOP
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