Part # MAX8650 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX8650 DS


Part Details:

19-3973; Rev 1; 8/08 EVALUATION KIT AVAILABLE 4.5V to 28V Input Current-Mode Step- Down Controller with Adjustable Frequency MAX8650 General Description Features The MAX8650 synchronous PWM buck controller oper- o Operates from 4.5V to 28V Supply ates from a 4.5V to 28V input and generates anadjustable 0.7V to 5.5V output voltage at loads up to 25A. o 1% FB Voltage Accuracy Over Temperature The MAX8650 uses a peak current-mode control archi- o Adjustable Output Voltage Down to 0.7V or REFIN tecture with an adjustable (200kHz to 1.2MHz) constant o Adjustable Switching Frequency or External switching frequency and is externally synchronizable. The Synchronization from 200kHz to 1.2MHz IC s current limit uses the inductor s DC resistance toimprove efficiency or an external sense resistor for high o 180° Phase-Shifted Clock Output accuracy. The current-limit threshold is adjusted with an o Adjustable Overcurrent Limit external resistor. Foldback-type current limit can beimplemented to reduce the power dissipation in overload o Adjustable Foldback Current Limit or short-circuit conditions. Short-circuit protection is o Adjustable Slope Compensation provided based on sensing the current in the low-sideMOSFET. A reference input is provided for use with a o Selectable Current-Limit Mode: Latch-Off or high-accuracy external reference or for double-data-rate Automatic Recovery (DDR)-tracking applications. o Monotonic Output-Voltage Rise at Startup Monotonic prebiased startup is available for a safe-start o Output Sources and Sinks Current in applications where the output capacitor may have aninitial charge. This feature prevents the output from o Enable Input pulling low during startup, which is a common charac- o Power-OK (POK) Output teristic of conventional buck regulators. o A 180° out-of­phase synchronization output is available Adjustable Soft-Start for synchronizing with another converter. o Independently Adjustable Overvoltage Protection Applications Ordering Information Base Stations DDR Network and Telecom Power Modules PART TEMP RANGE PIN-PACKAGE Storage IBA Applications MAX8650EEG+


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MAX8650.pdf Datasheet