LT1611CS5#TRMPBF

Overview

The LT1611CS5#TRMPBF is a high-frequency inverting switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 0.9V to 10V and delivers a negative adjustable output starting at -0.9V. The device features a fixed switching frequency of 1.4MHz and supports a maximum switch current of 550mA. It consumes only 3mA of operating supply current, making it suitable for low-power applications. The component is housed in a compact 5-lead SOT-23 package.

Feature Summary

• Industry's first inverting DC/DC converter available in a 5-lead SOT-23 package
• Current mode control architecture for stable operation
• Designed specifically for small form factor and low power consumption requirements

Applications

• Small portable electronic devices requiring negative voltage rails
• Low power battery-operated systems
• Compact industrial instrumentation with space constraints

Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc., formerly Linear Technology. Ensure the part number matches the exact electrical specifications for inverting regulation before integration into designs.

Selection Notes

Select this component when a negative voltage rail is required from a single positive source in a minimal footprint. The 1.4MHz frequency allows for smaller passive components compared to lower frequency alternatives. Consider the 550mA switch current limit against peak load demands.

Part Context

This part belongs to the LT1611 series of switching regulators. It is distinct from non-inverting variants like the LT1613 or LT1615. The CS5 designation refers to the commercial temperature grade and SOT-23-5 package type.

Replacement Considerations

LT1611CS5#TRPBF is a verified substitute offering identical functionality but potentially different packaging options such as cut tape.