LT3507HUHF#TRPBF

Overview

The LT3507HUHF#TRPBF is a monolithic switching regulator featuring three independent buck converters and one low-dropout linear regulator. It operates from an input voltage range of 4V to 36V. The device provides adjustable output voltages with maximum currents of 2.7A for the primary buck channel and 1.8A for each of the secondary buck channels. The integrated LDO supports up to 20mA. Switching frequencies are selectable between 250kHz and 2.5MHz. It is housed in a 38-lead QFN package rated for operation from -40°C to +150°C.

Feature Summary

• Integrates three synchronous buck DC/DC converters and one LDO within a single compact package
• Supports wide input voltage ranges suitable for automotive and industrial power buses
• Features flexible switching frequency selection to optimize efficiency and component size
• Includes thermal regulation and current limit protection for robust operation

Applications

• Automotive infotainment and instrument cluster power distribution
• Industrial control systems requiring multiple regulated rails
• Embedded computing platforms with mixed analog and digital loads
• Telecommunications equipment power management

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation, as packaging formats such as tube versus tape and reel can vary by variant. Confirm that the requested part matches the exact temperature grade and pin configuration required for the target PCB footprint. Cross-reference the manufacturer's latest datasheet revision to ensure compatibility with current manufacturing standards and environmental compliance requirements before finalizing procurement orders.

Selection Notes

Select this component when a design requires four distinct regulated outputs derived from a single high-voltage source. The choice depends on the need for high integration density to reduce board space compared to discrete solutions. Evaluate the thermal performance requirements based on the total power dissipation of the three buck channels and the LDO. Ensure the application benefits from the adjustable frequency feature to minimize electromagnetic interference or reduce external passive component values.

Part Context

This part belongs to the LT3507 family of multi-output regulators designed for high-density power applications. It consolidates power stages and control logic into a single semiconductor die. The HUHF suffix indicates a specific QFN package variant optimized for surface-mount assembly. This series addresses the trend toward miniaturization in modern electronic systems where multiple voltage rails are necessary for complex microprocessors and peripheral interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.