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Overview
| Topology | SEPIC Buck-Boost Topology |
| Input voltage | 5.5-100 V |
| Switching frequency | 300 kHz |
| Output 1 | 24.72 V / 1 A |
| IC revision | B |
Description
Demonstration circuit 1342B features the LT3758AEMSE in a 300kHz SEPIC converter circuit, designed for a 24V output from a 18V to 72V input. The LT3758A operates over an input range of 5.5V to 100V, and features a novel FBX pin architecture, which allows it to be connected directly to a resistor divider from either a positive output voltage or a negative output voltage.
Features
TheLT3758Aoperatesover an input range of 5.5Vto 100V, suitable for automotive, telecom and industrial applications. It also exhibits a low shutdown current of 1µA, making it ideal for battery-operated systems. Thanks to a novel FBX pin architecture, the LT3758A can be connected directly to a resistor divider from either a positive output voltage or a negative output voltage to ground. It also packs many popular features such as soft-start, input under voltage lockout, adjustable frequency and clock synchronization in a small 10-lead MSOP package or a 3mm × 3mm QFNpackage.