LT3507AEFE

Overview

The LT3507AEFE is a high-performance power management IC featuring three synchronous buck converters and one low-dropout linear regulator. It operates with an input voltage range of 4V to 36V and supports adjustable output voltages from 0.8V to 32.4V. The device provides maximum output currents of 2.7A for the primary channel and 1.8A for each of the two auxiliary channels. It utilizes a fixed switching frequency between 900kHz and 1.1MHz and is housed in a 38-lead TSSOP package with an exposed thermal pad.

Feature Summary

• Integrates three current-mode buck regulators and one LDO for multi-rail power distribution
• Includes independent enable, tracking/soft-start, and power-good indicators for simplified sequencing
• Supports ceramic output capacitors to reduce system component count and cost
• Features integrated power sequencer suitable for complex supply architectures

Applications

• Automotive electronic systems requiring multiple regulated rails
• Industrial control equipment with diverse voltage requirements
• Communication infrastructure power management modules
• Distributed power supply systems in embedded applications

Procurement Notes

Verify the specific suffix AEFE against official Analog Devices documentation to confirm the TSSOP-EP package and automotive temperature grade. Ensure compatibility with required PCB footprint dimensions for the 38-pin exposed pad configuration. Cross-reference RoHS compliance status and material declarations prior to final procurement decisions.

Selection Notes

Select this component when designing systems requiring four distinct regulated outputs from a single wide-input voltage source. It is appropriate for applications needing precise power sequencing and tracking capabilities without external timing components. Consider thermal dissipation requirements due to the high current density in the compact TSSOP package.

Part Context

This part belongs to the LT3507A family of monolithic power solutions designed for space-constrained environments. It consolidates multiple regulation functions into a single chip, reducing board area compared to discrete solutions. The family offers various package options including QFN and TSSOP variants to suit different thermal and layout constraints.

Replacement Considerations

LT3507AHFE#PBF: Identical electrical specifications with tube packaging instead of tape and reel.