产品信息
The LTM®4637 is a complete 20A output high efficiency
switch mode step-down DC/DC μModule (micromodule)
regulator. Includedinthepackagearetheswitchingcontroller, power FETs, inductor and compensation components.
Operating over an input voltage range from 4.5V to 20V,
the LTM4637 supports an output voltage range of 0.6V
to 5.5V, set by a single external resistor. Only a few input
and output capacitors are needed.
Current mode operation allows precision current sharing
of up to four LTM4637 regulators to obtain up to 80A
output. High switching frequency and a current mode
architecture enable a very fast transient response to line
and load changes without sacrificing stability. The device
supports frequency synchronization, multiphase/current
sharing, Burst Mode operation and output voltage tracking
for supply rail sequencing. A diode-connectedPNPtransistor is available for use as an internal temperature monitor.
The LTM4637 is offered in 15mm × 15mm × 4.32mm LGA
and 15mm × 15mm × 4.92mm packages. The LTM4637
is available with SnPb (BGA) or RoHS compliant terminal
finish. The LTM4637 is pin compatible with the LTM4627,
a 15A DC/DC μModule regulator.
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