The LM3485 is a high efficiency PFET switching regulator
controller that can be used to quickly and easily develop a
small, low cost, switching buck regulator for a wide range of
applications. The hysteretic control architecture provides for
simple design without any control loop stability concerns using
a wide variety of external components. The PFET architecture
also allows for low component count as well as ultralow
dropout, 100% duty cycle operation. Another benefit is
high efficiency operation at light loads without an increase in
output ripple.
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