LTM4642EY#PBF

LINEAR TECHNOLOGY  LTM4642EY#PBF  芯片, 直流/直流转换器, 降压, 1.4MHZ, BGA-56 新

The is a 20VIN, dual 4A or single 8A DC to DC µModule micromodule regulator in 56 pin BGA package. Included in package are switching controller, power FETs, inductor and all support components. Operating over input voltage ranges of 4.5V to 20V, 2.375V min with external CPWR bias, the LTM4642 supports two outputs with voltage ranges of 0.6V to 5.5V set by a single external resistor. Its high efficiency design delivers 4A continuous current 5A peak for each output. High switching frequency and valley current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The two outputs are interleaved with 180° phase to minimize ripple noise and reduce the I/O capacitors.

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Small form factor dual 4A power supply

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Selectable burst mode operation

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Dual 180° out of phase outputs with 4A DC

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Output overvoltage and overcurrent protection

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Output voltage tracking parallel current sharing

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±1.5% maximum total DC output voltage error

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Up to 95% maximum efficiency and maximum duty factor of 97%

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Phase lockable fixed frequency from 600KHz to 1.4MHz

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Constant on-time, valley current mode architecture

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Operating temperature range from -40°C to 125°C