The LTM®4642 is a complete dual 4A or single 8A step-down
DC/DC μModule® (micromodule) regulator. Included in the
package are the 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 a 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 the
ripple noise and reduce the I/O capacitors.
The power module is offered in a 9mm × 11.25mm ×
4.92mm BGA package. The LTM4642 is RoHS compliant
with Pb-free finish.
