LTC3543EDCB#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3543EDCB#TRPBF is a high-efficiency monolithic synchronous current-mode buck regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 2.5V to 5.5V and provides a positive adjustable output starting from 0.6V. The device delivers up to 600mA of output current at an internally fixed switching frequency of 2.25MHz. It is housed in a compact 6-lead WFDFN Exposed Pad package, suitable for space-constrained portable applications requiring efficient power conversion.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• High efficiency synchronous current-mode buck regulation topology
• Internally set 2.25MHz switching frequency for small external component size
• Positive adjustable output voltage capability down to 0.6V
• Compact 6-lead WFDFN Exposed Pad surface-mount package

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics powered by single-cell lithium-ion batteries
• Embedded systems requiring efficient step-down conversion from 5V rails
• Battery-powered devices needing extended operational life through high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc. to ensure authenticity. Check RoHS compliance status as required by your assembly specifications. Ensure the DFN-6 package footprint matches your PCB design constraints before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.25MHz frequency is acceptable for noise-sensitive designs. It is appropriate for loads requiring up to 600mA from a 2.5V to 5.5V source. Consider thermal performance due to the exposed pad requirement for heat dissipation. Compare against other buck regulators if lower switching frequencies or higher current capabilities are needed.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3543 series of synchronous buck regulators. It shares family characteristics such as current-mode control and high efficiency. The ED suffix typically denotes the commercial temperature grade and specific package variant within the broader product line managed by Analog Devices.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided documentation. Verify compatibility with existing inductor and capacitor selections if considering alternative manufacturers. Ensure pinout and thermal pad configurations match to avoid PCB redesign.