LT3507EUHF#PBF

Voltage Regulators - Linear + Switching Overview

The LT3507EUHF#PBF is a high-efficiency, synchronous step-down switching regulator manufactured by Analog Devices Inc. It integrates three independent Buck converters and one Low Dropout (LDO) linear regulator within a single package. The device supports an input voltage range of 4V to 36V, providing flexible power distribution for complex systems. The primary Buck channel delivers up to 2.7A, while the secondary channels provide 1.8A each. The integrated LDO offers additional low-noise regulation. Operating at a switch frequency between 900kHz and 1.1MHz, it ensures compact passive component sizes. The unit is housed in a 38-lead QFN package with exposed thermal pad, rated for operation from -40°C to +125°C.

Voltage Regulators - Linear + Switching Feature Summary

• Integrates three synchronous Buck regulators and one LDO for multi-rail power generation
• Features anti-phase switching architecture to minimize input ripple current
• Includes dedicated enable, track/soft-start, and power good pins for simplified sequencing
• Supports ceramic output capacitors to reduce system cost and board space

Voltage Regulators - Linear + Switching Applications

• Automotive electronics requiring robust multi-voltage rails
• Industrial control systems with distributed power needs
• Communication infrastructure equipment
• Portable battery-powered devices

Voltage Regulators - Linear + Switching Procurement Notes

Verify the specific suffix 'EUHF' against official Analog Devices documentation to confirm the exact pinout and thermal characteristics. Ensure the order quantity matches the manufacturer's standard tube packaging requirements. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.

Voltage Regulators - Linear + Switching Selection Notes

Select this component when a single IC solution is required to generate multiple regulated voltages from a wide input range. It is suitable for designs needing both high-current switching outputs and a clean LDO supply. Consider the 38-QFN package size constraints and thermal dissipation requirements. Verify that the 900kHz to 1.1MHz frequency range aligns with EMI constraints and inductor selection goals for the target application.

Voltage Regulators - Linear + Switching Part Context

This part belongs to the LT3507A family of power management ICs designed for high-density applications. It consolidates multiple power stages into one package, reducing bill-of-materials count and assembly complexity. The series is characterized by high efficiency and integrated protection features, making it a standard choice for modern embedded power architectures requiring reliable multi-output regulation.

Voltage Regulators - Linear + Switching Replacement Considerations

LT3507AHUHF#PBF: Same functional specifications but available in the Automotive temperature grade (-40°C to +150°C).

Voltage Regulators - Linear + Switching FAQ

Does the LT3507EUHF#PBF support ceramic output capacitors?

Yes, the device is specifically designed to operate stably with ceramic output capacitors, which helps reduce overall system cost and footprint.

How does the LT3507EUHF#PBF manage input ripple?

It utilizes an anti-phase switching operation for its Buck converters, which effectively cancels out input ripple currents.