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FULL DATA SHEET (PDF, 120kB) Download   E-Mail The MAX1644 evaluation kit (EV kit) provides a 1.5V output voltage from a +3V to +5.5V input source. It delivers up to 2A output current with 92% (max) efficiency. The MAX1644 is a step-down switching regulator with an internal synchronous rectifier to reduce the number of external components. It features a resistor-programmable fixed off-time as well as current-mode operation for superior load- and line-transient response. The MAX1644 EV kit can also be used to evaluate other output voltages by changing the feedback resistors (R1 and R2) or by using the preset +3.3V or +2.5V settings.

Key Features		Applications/Uses
+3V to +5.5V Input Voltage Range Output Voltage Preset to 1.5V 2.5V or 3.3V Selectable 1.1V to VIN Adjustable 2A Output Current 92% Efficiency 300kHz Switching Frequency Synchronous Rectification for Improved Efficiency No External Schottky Diode Required Less than 1µA typical IC Shutdown Current Surface-Mount Construction Fully Assembled and Tested		+3.3V PC Card and CardBus Applications +5V to +3.3V/+2.5V Conversion CPU Daughter Card Supply CPU I/O Supplies Desktop Bus-Termination Boards Notebook and Subnotebook Computers

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