This paper introduces the LT8582, a dual output monolithic supply with integrated 3A power switches and operation to 2.5MHz in a 7mm × 4mm DFN package.
The document introduces the LT8582 as a versatile, monolithic dual-channel switching regulator that integrates two independent converters with high-power 3A, 42V switches. It is designed for applications requiring compact size and flexibility, such as local power supplies and engine control units.
Key features include operation up to 2.5MHz, programmable frequency via a single resistor, and the ability to configure each channel in boost, SEPIC, inverting, or flyback topologies. The chip offers advanced protection mechanisms like overcurrent, overvoltage, and thermal shutdown, along with a GATE pin for external PFET control to manage input/output disconnects.
| Power Switch Current | 3A |
|---|---|
| Switch Voltage Rating | 42V |
| Maximum Switching Frequency | 2.5MHz |
| Package Dimensions | 7mm x 4mm DFN |
| Input Operating Voltage Range | 2.5V to 22V |
Each channel can be independently configured in a boost, SEPIC, inverting or flyback topology.
The frequency is programmable from 20kHz to 2.5MHz using one resistor.
The chip stops switching, the GATE pin becomes high impedance, and an external PFET turns off.