LT1936IMS8E

Overview

The LT1936IMS8E#TRPBF is a synchronous step-down DC/DC switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.6V to 36V and provides a single adjustable positive output from 1.2V to 33.12V. The device delivers up to 1.4A of output current at a fixed switching frequency of 500kHz. It utilizes an 8-lead MSOP package with an exposed thermal pad for efficient heat dissipation. The component supports junction temperatures between -40°C and 125°C, ensuring reliable operation in demanding industrial environments.

Feature Summary

• Integrates high-side and low-side power switches for efficient synchronous rectification without requiring external Schottky diodes.
• Features cycle-by-cycle current limit and thermal shutdown protection to safeguard the device under fault conditions.
• Includes soft-start functionality to limit inrush current during startup and ensure controlled voltage ramp-up.

Applications

• Industrial control systems requiring regulated power supplies
• Portable instrumentation and measurement devices
• Embedded computing modules and microprocessor power rails

Procurement Notes

Verify the specific suffix (e.g., #TRPBF) to confirm tape-and-reel packaging and lead-free compliance. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the manufacturer datasheet revision history for any recent material or marking changes that may affect assembly processes.

Selection Notes

Select this component when a wide input voltage range up to 36V is required alongside moderate output current capabilities. Consider the 500kHz switching frequency as a balance between component size and efficiency. Evaluate the thermal performance requirements given the exposed pad design, which aids in heat transfer but necessitates proper PCB copper pour implementation.

Part Context

The LT1936 belongs to Analog Devices' family of high-voltage synchronous buck converters. It is designed for applications needing robust performance from higher input voltages. The IMS8E designation indicates the specific MSOP-8 package with an exposed pad, distinguishing it from other pinout or thermal variants within the broader LT1936 product line.

Replacement Considerations

Direct substitutes include the LT1936EMS8E#TRPBF, which shares identical electrical specifications and pinout but differs only in the package style (MSOP vs TSSOP). Verify thermal resistance characteristics and physical dimensions before swapping packages to ensure mechanical compatibility.