LT3487EDD#TRPBF

Overview

The LT3487EDD#TRPBF is a dual-output step-up DC/DC controller designed for automotive applications. It operates with an input voltage range of 2.3 V to 16 V and supports output voltages from 1.23 V to 28 V. The device features a fixed switching frequency of 2150 kHz and draws a maximum supply current of 3.7 mA. It functions within an extended temperature range of -40°C to 85°C and is housed in a 10-pin DFN EP surface-mount package measuring 3 mm by 3 mm with a maximum height of 0.75 mm.

Feature Summary

• Dual-output step-up topology for simultaneous power generation
• Automotive-grade qualification for vehicle environments
• High-frequency operation enabling compact passive component selection

Applications

• Automotive electronics systems requiring dual isolated or non-isolated rails
• Power management for automotive infotainment units
• Vehicle sensor interface circuits

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration. Confirm RoHS compliance status through official Analog Devices documentation, as general databases may list conflicting environmental data. Ensure the automotive grade designation matches project requirements before procurement.

Selection Notes

Select this component when dual high-voltage outputs are required from a low automotive battery source. The 2150 kHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 16 V maximum input voltage aligns with the system's transient load dump conditions.

Part Context

This part belongs to the LT3487 family of automotive step-up controllers. It differs from buck regulators like the LT3480 by providing boost functionality. The DFN EP package provides thermal dissipation advantages over standard plastic packages for power management ICs in space-constrained automotive modules.

Replacement Considerations

LT3487EDD is the lead-free equivalent variant.