EUP3260-1A,2.25MHz同步降压DC/DC转换器  DataSheet
概述
EUP3260是一款应用于电池供电的便携式设备的同步降压DC/DC。2.5V到5.5V的输入电压范围使EUP3260适合工作在一节锂电池或三节的镍氢电池/镍铬电池的便携式设备。该芯片也可工作于标准的3.3V或5V电压。
EUP3260工作在2.25MHz的固定开关频率下，允许应用小的电感和电容以节省面积。内部同步开关管提升效率并无需外部肖特基二极管。EUP3260内部集成了软启动功能，避免了电流启动过程中电流的过充。
EUP3260具有可供选择的force PWM和PFM/PWM模式。force PWM模式的纹波噪声小，而PFM模式具有轻载高效的优势。EUP3260采用TDFN-6封装，并能提供高达1A的输出电流。
特点
•高至95%的效率
•2.25MHz的固定频率
•1A负载电流能力
•典型30µA的静态电流
•2.7V到5.5V的输入电压范围
•低至0.6V的可调输出电压
•无需肖特基二极管
•短路保护和过温保护
•内部软启动功能
TDFN-6的封装
符合RoHS标准和100%无铅
应用
•固态硬盘模块
•智能手机
•平板电脑
•便携式媒体播放器
•µC/µP, FPGA和数字信号处理器电源
•路由器和转化器的内置DC/DC模块
EUP3260-1A,2.25MHz Synchronous Step-Down DC/DC Regulator
Description
The EUP3260 is synchronous step-down DC-DC converters optimized for battery powered portable applications. The 2.7V to 5.5V input voltage range makes EUP3260 ideal for powering portable equipment that runs from 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3V or 5V voltage rail.
The EUP3260 operates at 2.25MHz fixed switching frequency allowing the use of small inductors and capacitors to achieve a small solution size. The internal synchronous switch increases efficiency and eliminates the need for an external schottky diode. The EUP3260 has internal soft start and avoids inrush current during startup.
The EUP3260 has a user able mode of forced PWM and PFM/PWM mode. The forced PWM mode operation provides the lowest ripple noise and the PFM mode operation provides high efficiency at light loads. The EUP3260 is available in SOT23-5 and TDFN-6 package. For TDFN-6 package, it provides up to 1A output current.
Feature
•High Efficiency Up to 95%
•2.25MHz Constant Switching Frequency
•1A Available Load Current
•30µA Typical Quiescent Current
•2.7V to 5.5V Input Voltage Range
•Adjustable Output Voltage as Low as 0.6V
•No Schottky Diode Required
•Short Circuit and Thermal Protection
•Internal Soft Start Function
•Available in TDFN-6 and SOT23-5 Packages
•RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free
Application
•SSD Module
•Smart Phones
•Tablet PC
•Portable Media Players
•μC/μP, FPGA and DSP Power
•Plug-in DC/DC Modules for Routers and Switchers
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