LT3480HMSE#TRPBF

Overview

The LT3480HMSE#TRPBF is a micropower synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.6 V to 36 V and delivers up to 2 A of output current. The device features a fixed internal switching frequency of 2.4 MHz, enabling the use of small external components. It provides an adjustable output voltage from 790 mV to 20 V. Key electrical specifications include a quiescent current of 70 µA during operation and 30 µA in shutdown mode. The component is housed in a 10-lead MSOP package with an exposed thermal pad and supports an operating temperature range from -40°C to +150°C.

Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for efficient synchronous rectification
• Features a fixed 2.4 MHz switching frequency to minimize passive component size
• Includes programmable soft-start to limit inrush current during startup
• Offers cycle-by-cycle current limiting and thermal shutdown protection

Applications

• Battery-powered portable equipment requiring high efficiency
• Point-of-load regulation for digital signal processors and microprocessors
• Industrial control systems with wide input voltage ranges
• Automotive electronics applications

Procurement Notes

Verify the exact part number suffix against official Analog Devices documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with required thermal management solutions due to the exposed pad design. Cross-reference RoHS compliance status and specific manufacturing lot details with authorized distributors or the manufacturer directly before finalizing procurement orders.

Selection Notes

Select this component when a wide input voltage range up to 36 V is required alongside high output current capability. The fixed 2.4 MHz frequency is suitable for designs prioritizing compact footprint over ultra-low noise. Consider the thermal performance requirements of the MSOP-10 package relative to the expected load conditions and ambient temperature constraints.

Part Context

This part belongs to the LT3480 family of micropower synchronous buck converters. It shares functional similarities with other devices in the series but differs in package options such as DFN or SOIC variants. The HMSE designation specifically identifies the MSOP-10 package variant within the broader product line.

Replacement Considerations

LT3480IDD#PBF is a documented pin-compatible alternative offering the same functionality in a DFN-10 package.