LT3500EDD#TRPBF

Overview

The LT3500EDD#TRPBF is a monolithic power supply device from Analog Devices Inc., integrating a synchronous step-down switching regulator and a linear regulator/controller. It operates with an input voltage range of 3V to 36V and provides a maximum output current of 2A for the buck converter. The device features a fixed 2.2MHz switching frequency and supports adjustable output voltages. It is housed in a 12-lead DFN package with an exposed pad, designed for surface-mount installation. The component supports a shutdown function and operates within a temperature range of -40°C to +150°C.

Feature Summary

• Integrates a high-efficiency synchronous buck converter with a dedicated linear regulator controller on a single die.
• Supports wide input voltage ranges suitable for automotive and industrial bus applications.
• Features a compact 12-lead DFN package with thermal exposure for efficient heat dissipation.

Applications

• Automotive electronics requiring isolated or auxiliary power rails
• Industrial systems needing multi-rail power distribution
• Embedded controllers requiring combined switching and linear regulation

Procurement Notes

Verify the specific suffix and tape-and-reel configuration against the manufacturer's latest datasheet before ordering. Confirm that the 12-lead DFN package dimensions match your PCB footprint requirements. Ensure compatibility with the required operating temperature range and verify pinout assignments for the integrated linear controller section to prevent circuit malfunction during integration.

Selection Notes

Select this component when a design requires both a high-current switching regulator and a secondary linear regulation capability within a small form factor. It is appropriate for applications where input voltages vary significantly between 3V and 36V. Consider the 2.2MHz switching frequency for trade-offs between inductor size and electromagnetic interference. Evaluate thermal performance due to the power density in the 12-lead DFN package.

Part Context

This part belongs to the LT3500 series of dual-output power management ICs. It differs from other variants by its specific package type (DD/DFN) and reel packaging. The series is characterized by combining switching and linear technologies to simplify power architecture. Other members may offer different current ratings or package options such as MSOP or larger DFN footprints.

Replacement Considerations

LT3500HDD#TRPBF