LT3506EDHD#TRPBF

Overview

The LT3506EDHD#TRPBF is a dual monolithic step-down switching regulator manufactured by Analog Devices Inc. It integrates two independent high-efficiency buck converters within a single 16-lead DFN package. The device accepts an input voltage range from 3.6V to 25V and provides two adjustable output voltages ranging from 0.8V to 23.25V. Each channel delivers a continuous output current of 1.6A. The internal power switches operate at a fixed switching frequency of 1.2MHz, enabling the use of small external components while maintaining high efficiency across various load conditions.

Feature Summary

• Integrates two independent synchronous buck regulators in a compact footprint
• Supports wide input voltage ranges for flexible system design
• Features adjustable output voltage control via external resistors
• Includes integrated soft-start functionality to limit inrush current

Applications

• Point-of-load regulation for industrial equipment
• Power distribution networks in embedded systems
• Voltage conversion for microprocessor and FPGA cores
• Battery-powered devices requiring efficient step-down conversion

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging with lead-free composition when sourcing. Confirm the ED grade designation corresponds to the required industrial temperature operating range for your application environment. Cross-reference the manufacturer datasheet to ensure pinout compatibility with existing PCB layouts before finalizing procurement orders.

Selection Notes

Select this component when dual isolated or non-isolated low-voltage rails are required from a higher voltage bus. The 1.6A per channel rating suits moderate current loads without excessive thermal management. Consider the 1.2MHz switching frequency trade-off between component size and electromagnetic interference. Ensure input capacitors meet ripple current requirements for stable operation under dynamic load steps.

Part Context

This part belongs to the LT3506 family of dual step-down regulators designed for space-constrained applications. It shares architectural similarities with other ADI buck controllers but distinguishes itself through integrated synchronous switches and a fixed high-frequency operation. The DFN package facilitates thermal dissipation through an exposed pad connection to the ground plane.

Replacement Considerations

LT3506AIDHD#TRPBF offers improved electrical characteristics over the standard grade variant.