LT3581IDE#PBF

Overview

The LT3581IDE#PBF is a high-efficiency boost and inverting DC/DC converter manufactured by Analog Devices Inc. It integrates a 3.3A switch to deliver output currents up to 2A at 5V or 1A at 12V from input voltages ranging from 2.7V to 40V. The device operates with a fixed 500kHz switching frequency and supports both boost and inverting topologies. It features adjustable current limit, thermal shutdown, and soft-start capabilities within an 8-lead SOIC package.

Feature Summary

• Integrates a 3.3A power switch for high-current capability
• Supports flexible boost and inverting voltage conversion topologies
• Includes built-in fault protection mechanisms such as thermal shutdown

Applications

• Battery-powered systems requiring voltage step-up
• Inverting power supply generation for analog circuits
• Industrial control systems with wide input voltage ranges

Procurement Notes

Verify the specific suffix 'IDE' against the official Analog Devices datasheet to confirm temperature range and package variations. Ensure compatibility with RoHS standards if required by your application. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a single-inductor solution is needed for generating positive or negative rails from a wide input range. Consider the 500kHz frequency for balancing efficiency and passive component size. Evaluate thermal performance under maximum load conditions due to the integrated switch design.

Part Context

This part belongs to the LT3581 family of monolithic switching regulators designed for applications requiring robust fault protection and high efficiency. It is commonly used in automotive and industrial environments where reliability under varying load and input conditions is critical.

Replacement Considerations

LT3581IMS#PBF: Same functionality in MSOP package. LT3581IMSE#PBF: Same functionality in MSOP package with extended temperature range.