The LT3759 is a wide input voltage range boost/inverting/SEPIC controller that operates from 1.6V to 42V. It offers both positive and negative output control and can be used in various power supply designs.
This document is Design Note 500 from Linear Technology Corporation regarding the LT3759 controller. The IC operates over an input voltage range of 1.6V to 42V and controls positive or negative outputs using the same feedback pin, simplifying inventory for power supply designs.
| Input Voltage Range | 1.6V to 42V |
|---|---|
| Package Type | 12-pin MSE package |
| Switching Frequency Range | 100kHz to 1MHz |
| Output Current (Boost Example) | 2A |
It contains two internal error amplifiers—one for positive outputs and one for negative—allowing the FBX pin to be connected directly to a divider from either polarity.
The device operates over an input voltage range from 1.6V to 42V.
The converter provides a 12V output at 2.5A.
The switching frequency can be set from 100kHz to 1MHz.