The LTC3543EDCB#TRPBF is a high-performance, synchronous step-down DC/DC converter designed by Linear Technology, which is now part of Analog Devices. This compact and efficient power management solution is ideal for portable devices that require long battery life and minimal space utilization.

Key Features

• High Efficiency: Capable of up to 95% efficiency, the LTC3543EDCB#TRPBF ensures minimal power loss during conversion, extending battery life for portable applications.
• Wide Input Voltage Range: With an input voltage range of 2.25V to 5.5V, it is versatile enough to be powered from various sources including single-cell Li-Ion batteries.
• Adjustable Output Voltage: The output voltage is adjustable from 0.6V to the input voltage, providing flexibility to power a wide range of low voltage applications.
• High Switching Frequency: Its 2.25MHz switching frequency allows for the use of small, low-cost capacitors and inductors, reducing the overall footprint of the power supply design.
• No Schottky Diode Required: The synchronous rectification design eliminates the need for an external Schottky diode, further simplifying design and reducing bill of materials cost.
• Low Dropout Operation: The internal switches have low RDS(ON), providing low dropout operation and maximizing efficiency under all conditions.
• Thermal Protection: It includes thermal shutdown to protect the device under over-temperature conditions.

Applications

The LTC3543EDCB#TRPBF is suitable for a variety of applications, particularly where efficient power conversion is critical. These include:

• Handheld Devices
• Portable Media Players
• Wireless Modems
• GPS Devices
• Medical Devices
• Point-of-Load Conversions

Package and Availability

This converter comes in a 6-pin DFN package with a low profile of only 0.75mm, making it suitable for space-constrained applications. The LTC3543EDCB#TRPBF is available in tape and reel packaging, denoted by the TRPBF suffix, facilitating efficient assembly for high-volume production.