LTC3405AES6#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3405AES6#TRPBF is a high-efficiency monolithic synchronous buck regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 1.8 V at up to 300 mA. The device utilizes a constant frequency, current-mode architecture with a switching frequency of 1.5 MHz. It features low quiescent current of 20 µA during operation and less than 1 µA in shutdown. The component is housed in a compact SOT-23-6 package and supports operation temperatures from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous step-down topology for high efficiency
• Burst Mode operation for ultra-low no-load current
• Compact SOT-23-6 surface-mount packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Single-cell lithium-ion battery powered systems
• Portable consumer electronics
• Battery-operated instrumentation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the fixed 1.8 V output variant matches the design requirement, as other voltage options exist within the LTC3405 family. Ensure the AES6 grade meets the required industrial temperature range specifications for the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part for applications requiring minimal solution size due to the small SOT-23-6 footprint. The fixed 1.8 V output eliminates external resistor networks, simplifying design. Consider the 1.5 MHz switching frequency for balancing component size against electromagnetic interference requirements compared to lower frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LTC3405 series of micropower synchronous step-down regulators. The series is characterized by its ability to deliver regulated output currents from small batteries while maintaining high efficiency across the load range. The AES6 designation specifies the industrial temperature grade and the specific SOT-23-6 package configuration used for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LTC3405ES6-1.8#TRPBF (Industrial grade, same electrical specs)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the typical supply current in shutdown mode?

The supply current drops to less than 1 µA in shutdown mode.

Does the device support adjustable output voltage?

No, the LTC3405AES6#TRPBF provides a fixed 1.8 V output; adjustable versions are available under different part numbers.