LT1611CS5#TRPBF

Overview

The LT1611CS5#TRPBF is a current mode DC/DC converter manufactured by Analog Devices Inc., housed in a 5-lead SOT-23 package. It operates as an inverting switching regulator with a switching frequency of 1.4 MHz. The device accepts an input voltage range from 900 mV to 10 V and delivers an adjustable negative output down to -0.9 V. It supports an output current of up to 550 mA while consuming 3 mA of operating supply current.

Feature Summary

• Integrates a 1.4 MHz current mode controller within a compact five-lead SOT-23 footprint
• Provides inverting topology for generating negative voltages from positive sources
• Supports wide input voltage ranges starting from low levels near 1 V

Applications

• Small, low power applications requiring negative rail generation
• Portable devices where board space is limited
• Systems needing inverting DC/DC conversion in minimal packages

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm the component meets RoHS compliance requirements for your region. Ensure the supplier provides valid traceability documentation. Check for any regional distribution restrictions before finalizing procurement plans.

Selection Notes

Select this component when a negative voltage rail is required from a low-voltage source. The SOT-23-5 package suits designs with strict spatial constraints. Consider the 1.4 MHz frequency for smaller external passive components compared to lower frequency alternatives.

Part Context

This part belongs to the LT1611 series, recognized as the industry's first inverting DC/DC converter in a five-lead SOT-23 package. It is designed specifically for applications demanding high efficiency and small form factors. The series targets portable electronics and battery-powered systems.

Replacement Considerations

LT1611CS5#PBF is available in tube packaging instead of tape and reel.