LT3502EDC

Overview

The LT3502EDC is a current mode PWM step-down DC/DC converter featuring an internal 500mA power switch. It operates with input voltages ranging from 3V to 40V and provides an adjustable output voltage between 0.8V and 36V. The device supports switching frequencies of 750kHz or 2.2MHz, enabling the use of compact external components. Packaged in an 8-lead 2mm x 2mm DFN with an exposed pad, it is designed for space-constrained applications requiring efficient voltage regulation.

Feature Summary

• Integrates a 500mA power switch within a miniature footprint
• Supports flexible switching frequency selection for optimization
• Features current mode PWM control for stable regulation

Applications

• Battery-powered portable equipment
• Point-of-load regulation modules
• Industrial control systems

Procurement Notes

Verify the specific suffix (e.g., #TRMPBF) against the official Analog Devices datasheet to confirm tape-and-reel packaging and automotive qualification status. Ensure the ordering part number matches the required temperature grade and package variant before procurement.

Selection Notes

Select this component when a compact buck converter with high input voltage tolerance is required. Evaluate the trade-off between switching frequency and inductor size based on the available 750kHz or 2.2MHz options. Confirm that the load current does not exceed the internal 500mA switch limit.

Part Context

This part belongs to the LT3502 family of synchronous step-down converters. It is distinct from linear regulators and other switching topologies by its integrated switch and wide input range. The DFN package facilitates thermal dissipation through the exposed pad, supporting reliable operation in dense PCB layouts.

Replacement Considerations

Direct substitutes include other parts from the LT3502 series such as LT3502IDC or LT3502EMS, provided the package and electrical specifications align with the design requirements.