LT3580MPMS8E#PBF

Overview

The LT3580MPMS8E#PBF is a monolithic switching regulator manufactured by Analog Devices Inc., housed in an 8-lead MSOP package with an exposed pad. It integrates a 2A switch capable of supporting Boost, Inverting, Cuk, and SEPIC topologies. The device operates with an input voltage range from 2.5V to 32V and delivers a maximum output voltage of 42V. It features a programmable switching frequency between 200kHz and 2.5MHz, a typical quiescent current of 1mA, and supports negative or positive adjustable outputs. The component is rated for operation within a temperature range of -55°C to +125°C.

Feature Summary

• Integrates a high-current 2A power switch for efficient energy transfer across multiple converter topologies.
• Supports versatile circuit configurations including boost, inverting, Cuk, and SEPIC architectures.
• Features a wide operating input voltage range suitable for various power source conditions.
• Includes soft-start functionality to manage inrush current during startup sequences.

Applications

• Battery-powered systems requiring voltage step-up or inversion
• Industrial control circuits utilizing Cuk or SEPIC converters
• Automotive electronics operating within wide voltage ranges
• Portable devices needing efficient DC-DC conversion

Procurement Notes

Verify the specific suffix 'MP' indicates military-grade qualification requirements before procurement. Confirm that the '#PBF' designation ensures lead-free compliance with RoHS standards. Check availability status as restricted supply may apply. Ensure the MSOP-8 package footprint matches the design layout. Validate thermal performance capabilities given the exposed pad requirement for heat dissipation.

Selection Notes

Select this component when a single IC must support multiple non-standard topologies like Cuk or SEPIC alongside standard boost and inverter modes. Consider the 2A switch current limit against peak load requirements. Evaluate the 2.5V minimum input voltage against the lowest expected source level. Assess the 42V output capability against insulation and component stress limits. Review the extended temperature range suitability for harsh environments.

Part Context

This part belongs to the LT3580 family of monolithic DC/DC converters designed for flexibility in topology selection. Unlike fixed-function regulators, it allows designers to implement various converter types using external passive components. The military grade variant offers enhanced reliability specifications compared to commercial versions. It serves as a compact solution for applications where board space is limited but multiple voltage rails are needed.

Replacement Considerations

• LT3580HMS8E#TRPBF
• LT3580IMS8E#TRPBF

FAQ

What converter topologies does the LT3580 support?

The LT3580 supports Boost, Inverting, Cuk, and SEPIC topologies, allowing flexible circuit design using external components.

Is the LT3580MPMS8E#PBF synchronous?

No, the LT3580 uses a non-synchronous architecture with an integrated N-channel power switch.

What is the maximum output voltage capability?

The device can generate output voltages up to 42V depending on the selected topology and external component values.