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PAM2301 -300mA、600mA、800mA PWM降压型DC-DC转换器
PAM2301 General Description
PAM2301是一个降压型，DC-DC转换器，在高负载电流模式中，固定频率PWM保证了最佳静态和瞬时特性。为了保证便携设备的最长电池寿命，PAM2301含一个省电脉冲频率调制（PFM）模式，它可以在低负载条件下降低开关频率来省电。 PAM2301工作在输入电压从2.5V到5V，因此可以适用单节锂电池，多节碱性/镍电池,USB,和其他常用电源供电，PAM2301输入电压可以在0.6V到输入电压之间调节,后缀零件号码PAM2301-XX表示预设定的电压范围是3.3V, 1.8V, 1.5V, 1.2V 或者可调。
All versionsemploy internal power switch and synchronous rectifierfor to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output and the shutdown current is less than 0.1 A. Other key features include under-voltage lockout to prevent deep battery discharge.The PAM2301is available in SOT23-5 package.
PAM2301 Features
·Efficiency up to 96%
·Only 40μA (TYP.) Quiescent Current
·Output Current: Up to 800mA
·Internal Synchronous Rectifier
·1.5MHz Switching Frequency
·Soft Start
·Under-Voltage Lockout
·Short Circuit Protection
·Thermal Shutdown
·5-pin Small SOT23-5 Package
PAM2301 Applications
·Cellular Phone
·Portable Electronics
·Wireless Devices
·Cordless Phone
·Computer Peripherals
·Battery Powered Widgets
·Electronic Scales
·Digital Frame
