LT3507AHFE#PBF

Overview

The LT3507AHFE#PBF is a quad output 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 delivers adjustable outputs from 0.8V to 32.4V. The primary buck channel supports up to 2.7A, while the secondary channels provide 1.8A each. Integrated sequencing logic manages startup order, and the device functions within a temperature range of -40°C to +150°C in a 38-pin TSSOP-EP package.

Feature Summary

• Integrates three high-efficiency synchronous buck regulators alongside a single LDO for comprehensive multi-rail power generation.
• Includes dedicated hardware sequencers to control startup timing and ensure proper power rail ordering without external components.
• Features independent enable pins, tracking/soft-start controls, and power-good indicators for precise system management.

Applications

• Automotive electronic systems requiring robust multi-voltage regulation
• Industrial control units with complex power distribution needs
• Communication infrastructure equipment

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure the procurement source provides valid traceability for automotive-grade components. Confirm RoHS compliance status matches current manufacturing standards before finalizing orders.

Selection Notes

Select this component when designing systems requiring four distinct regulated rails from a single wide-input supply. The integrated sequencing simplifies board layout compared to discrete solutions. Verify that the thermal performance of the 38-TSSOP-EP package meets the application's heat dissipation requirements under maximum load conditions.

Part Context

This part belongs to the LT3507 family of mixed-signal power management ICs designed for demanding environments. It consolidates multiple switching and linear regulators into a single compact footprint, reducing overall system complexity and component count for space-constrained designs.

Replacement Considerations

LT3507HUHF#PBF offers identical electrical specifications but utilizes a QFN-38 package instead of TSSOP-EP. Verify pin compatibility and thermal pad requirements before substituting to ensure mechanical fit.