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完整的数据资料 (PDF, 87kB) 英文 下载 The MAX1623 evaluation kit (EV kit) provides a preset 3.3V output voltage from a +4.5V to +5.5V input source. It delivers up to 3A output current with greater than 90% efficiency. The MAX1623 is a step-down switching regulator with synchronous rectification that includes two low-on-resistance 0.1Ω (max), 3A MOSFET power switches. It features a resistor-programmable fixed off-time as well as current-mode operation for superior load- and line-transient response. The MAX1623 EV kit can also be used to evaluate other output voltages besides 3.3V by changing RTOFF and the feedback resistors R1 and R2 located on the bottom of the board.

关键特性		应用/使用
+4.5V to +5.5V Input Voltage Range Output Voltage 3.3V Preset 1.1V to 3.8V Adjustable (optional resistor-divider) Guaranteed 3A Output Current 94% Efficiency (VIN = 5V, VOUT = 3.3V at IOUT = 2A) Internal 3A, 0.1Ω (max) MOSFET Switches Up to 350kHz Switching Frequency Thermal Shutdown at Tj = +145°C Surface-Mount Construction Fully Assembled and Tested		5V至3.3V转换 CPU子卡电源 台式计算机总线端接电源 DSP电源 笔记本电脑CPU I/O电源

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