This document introduces a high input voltage monolithic switcher that can perform both step-up and step-down functions using a single inductor. The module has a wide input voltage range and precise output voltage control. It features constant frequency and current mode architecture, high efficiency, and low power consumption.
This document is Design Note 330A for the Linear Technology LT3433, a high voltage monolithic DC/DC converter. It details how the device uses two internal switches to perform both step-up and step-down conversion with a single inductor, accommodating input voltages from 4V to 60V.
The converter operates with input voltages from 4V to 60V.
The device allows programming of precision output voltages up to 20V.
Burst Mode operation reduces the device's quiescent current to 100uA during no-load conditions.