LT1944-1EMS#TRPBF

Overview

The LT1944-1EMS#TRPBF is a dual micropower step-up DC/DC converter housed in a 10-pin MSOP package. It integrates two independent boost converters with distinct current limits: one rated at 100mA and the other at 350mA. The device operates from an input voltage range of 1.2V to 15V and features a low operating supply current of 20µA. Designed for efficiency in space-constrained applications, it includes soft-start functionality and supports adjustable output voltages.

Feature Summary

• Dual micropower step-up DC/DC converter architecture
• Integrated 100mA and 350mA current limit options
• Low quiescent current operation for battery efficiency
• Adjustable output voltage capability

Applications

• Portable instrumentation requiring multiple power rails
• Battery-powered medical devices
• Industrial sensor nodes
• Communication equipment with strict power budgets

Procurement Notes

Verify the exact part number suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc., formerly Linear Technology. Ensure the order specifies the EMS8 or similar MSOP-10 package variant as required by your PCB footprint. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.

Selection Notes

Select this component when dual isolated or non-isolated boosted outputs are needed from a single input source. The asymmetric current limits allow powering a high-current load alongside a low-power auxiliary circuit. Consider the 1.2V minimum input voltage for lithium-ion or alkaline battery systems. Evaluate the 20µA supply current against total system sleep mode requirements.

Part Context

This part belongs to the LT1944 family of micropower converters. It differs from the standard LT1944 by offering specific current limit configurations optimized for mixed-load scenarios. The EMS#TRPBF designation identifies the surface-mount MSOP package and reel packaging format used for automated assembly processes.

Replacement Considerations

Check for LT1944EMS#TRPBF if symmetric current limits are acceptable. Verify pinout compatibility with existing footprints before substitution. Ensure input voltage ranges match the new application requirements.