The LM2672 series of regulators are monolithic integrated DC-DC converter built with a
LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching
regulator, capable of driving a 1-A load current with excellent line and load regulation. These
devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output
Requiring a minimum number of external components, these regulators are simple to use and
include patented internal frequency compensation, fixed frequency oscillator, external shutdown,
soft-start, and frequency synchronization.
The LM2672 series operates at a switching frequency of 260 kHz, thus allowing smaller
sized filter components than what is required with lower frequency switching regulators. Because of
its very high efficiency (>90%), the copper traces on the printed-circuit board are the only
heat sinking required.
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