LT3500HDD#TRPBF

Overview

The LT3500HDD#TRPBF is a monolithic switching regulator featuring a 2A buck converter and an integrated linear regulator/controller. It operates from a 3V to 36V input range with a 2.2MHz switching frequency. The device provides two outputs: an adjustable buck output capable of delivering up to 2A, and a separate linear regulator output. Packaged in a 12-pin DFN (DFN-12) surface-mount case, it supports operation across a temperature range of -40°C to +150°C. Quiescent current is specified at 2.5mA.

Feature Summary

• Integrates a high-current synchronous buck step-down regulator with a dedicated linear regulator controller on a single chip.
• Supports wide input voltage ranges suitable for various power supply architectures without requiring external level shifting.

Applications

• Automotive electronics requiring robust power management under varying line conditions
• Industrial control systems utilizing wide input voltage sources
• Embedded applications needing combined switched and linear regulation in compact footprints

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm package type and thermal characteristics. Ensure that the DFN-12 footprint matches the target PCB layout requirements. Confirm RoHS compliance status through the manufacturer's environmental declarations prior to integration into final assemblies.

Selection Notes

Select this component when design constraints require both high-efficiency switching and precise linear regulation within a limited board area. The wide input voltage capability simplifies input filtering requirements. Consider the thermal performance of the DFN package relative to the expected load current and ambient operating temperatures during the initial design phase.

Part Context

This part belongs to the LT3500 series of mixed-mode power management ICs. It distinguishes itself by combining a standard DC-DC buck topology with a linear control stage. This architecture allows designers to utilize the efficiency of switching for bulk conversion while maintaining the low noise characteristics of linear regulation for sensitive downstream circuits.

Replacement Considerations

LT3500EDD#TRPBF