LT3507AEUHF#TRPBF

Voltage Regulators - Linear + Switching Overview

The LT3507AEUHF#TRPBF is a monolithic power management IC featuring three current-mode DC/DC converters and one low-dropout linear regulator. It operates with an input voltage range of 4V to 36V. The device provides four adjustable outputs: one buck converter delivers up to 2.7A, while two additional buck converters provide up to 1.8A each. A fourth LDO output supports external transistors. The switching frequency is programmable from 900kHz to 1.1MHz. It utilizes a 38-pin QFN package rated for operation between -40°C and 125°C.

Voltage Regulators - Linear + Switching Feature Summary

• Integrates three synchronous buck converters and one LDO in a single compact package
• Features inverted switching operation on the primary 2.7A channel to reduce input ripple current
• Includes independent enable, tracking/soft-start, and power-good indicators for simplified power sequencing
• Supports ceramic capacitors across all outputs to minimize system component count and cost

Voltage Regulators - Linear + Switching Applications

• Automotive electronic systems requiring multi-rail power distribution
• Industrial control equipment with mixed analog and digital supply needs
• Communication infrastructure base stations
• Distributed power architectures in embedded systems

Voltage Regulators - Linear + Switching Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when ordering. Confirm the 'EUHF' designation matches the required automotive-grade temperature rating and QFN-38 footprint. Ensure compatibility with the intended PCB layout for thermal dissipation given the high current capabilities. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates prior to final procurement.

Voltage Regulators - Linear + Switching Selection Notes

Select this component when a design requires multiple regulated rails from a single wide-input voltage source. It is suitable for applications needing high efficiency from the buck stages combined with low noise from the LDO. Consider the 38-pin QFN package constraints for thermal management. Verify that the required output voltages fall within the adjustable ranges supported by the internal feedback networks.

Voltage Regulators - Linear + Switching Part Context

This part belongs to the LT3507A family of integrated power solutions designed for complex power distribution requirements. It consolidates functions typically requiring separate discrete regulators into one chip. The series is engineered for automotive and industrial environments where space savings and reliability are critical. It serves as a central power management unit for systems with varying voltage and current demands.

Voltage Regulators - Linear + Switching Replacement Considerations

LT3507AIUHF#PBF offers identical electrical specifications but is packaged in a tube rather than a reel.