LTC3884EUK#PBF

LINEAR TECHNOLOGY  LTC3884EUK#PBF  芯片, 直流/直流控制器, 同步降压, 1MHZ, QFN-48

The is a dual output PolyPhase DC/DC synchronous step-down Switching Regulator Controller with an I²C-based PMBus compliant serial interface. The controller employs constant-frequency current-mode architecture, together with unique scheme to provide excellent performance for sub-milliohm DCR applications. It is supported by the LTpowerPlay® software development tool with graphical user interface GUI. Programmable loop compensation allows the controller to be compensated digitally. Switching frequency, channel phasing output voltage and device address can be programmed both by the digital interface as well as external configuration resistors. Additionally, parameters can be set via the digital interface or stored in EEPROM. Both outputs have independent power good indicators and FAULT function. The LTC3884 can be configured for discontinuous pulseskipping mode or continuous inductor current-mode.

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Sub-milliohm DCR current sensing

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Digitally adjustable loop compensation parameters

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±0.5% Output voltage accuracy over temperature

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Integrated input current sense amplifier

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Internal EEPROM and fault logging

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Integrated N-channel MOSFET gate drivers power conversion

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Accurate PolyPhase® current sharing for up to 6 phases