LT3507AEFE#PBF

Overview

The LT3507AEFE#PBF is a quad-output power management IC featuring three synchronous buck converters and one low-dropout linear regulator. It operates from a 4V to 36V input supply with adjustable outputs ranging from 0.8V to 32.4V. The primary buck channel delivers up to 2.7A, while the secondary channels provide 1.8A each. Integrated features include independent sequencing, tracking, soft-start, and power-good indicators. The device supports switching frequencies between 900kHz and 1.1MHz and functions within an operating temperature range of -40°C to 125°C in a 38-pin TSSOP-EP package.

Feature Summary

• Integrates three high-efficiency synchronous buck regulators and one LDO for multi-rail power distribution
• Features independent run, track/soft-start, and power-good pins to simplify complex power sequencing requirements
• Utilizes anti-phase switching operation to significantly reduce input ripple current
• Supports ceramic output capacitors to minimize external component count and system cost

Applications

• Automotive electronic systems requiring robust multi-voltage regulation
• Industrial control equipment with distributed power architectures
• Communication infrastructure base stations
• Portable test and measurement instruments

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and thermal performance characteristics. Ensure the selected variant matches the required operating temperature grade and packaging style for your PCB layout. Cross-reference the datasheet revision history to validate any recent design changes or material declarations before finalizing procurement specifications.

Selection Notes

Select this component when designing systems that require four distinct regulated rails from a single wide-input voltage source. The integrated sequencing logic reduces board space compared to discrete solutions. Consider the thermal dissipation capabilities of the 38-TSSOP-EP package relative to the total load current. Verify that the required output voltages fall within the specified 0.8V to 32.4V adjustment range for all channels.

Part Context

This part belongs to the LT3507A family of quad-output PMICs designed for high-density power applications. It consolidates multiple discrete regulators into a single compact solution. The 'AE' designation typically indicates an extended automotive-grade temperature rating compared to standard industrial variants. The '#PBF' suffix denotes a lead-free and RoHS-compliant manufacturing process.

Replacement Considerations

LT3507AHFE#PBF offers identical electrical functionality but supports an extended maximum operating temperature of 150°C. LT3507AEUHF provides the same performance in a 38-QFN package for different footprint requirements. Verify thermal resistance values and pin-to-pad mapping when substituting these alternatives.