LTC1517CS5-5#TRPBF: A Compact, Efficient Step-Up DC/DC Converter

The LTC1517CS5-5#TRPBF is a high-performance, micropower step-up DC/DC converter from Linear Technology, designed to provide a fixed 5V output from an input voltage range of 1.5V to 5V. This device is an ideal solution for battery-powered applications where extended battery life is essential, and space is at a premium.

Encased in a compact SOT-23 package, the LTC1517CS5-5#TRPBF integrates several features that contribute to its efficiency and versatility. It includes an internal 1.0A power switch and does not require an external diode, which simplifies the design and minimizes the PCB footprint. Additionally, the converter operates at a quiescent current of just 20µA, making it suitable for portable devices where power conservation is crucial.

With its wide input voltage range, the LTC1517CS5-5#TRPBF can be powered by single-cell, multi-cell batteries, or standard 3.3V or 5V power sources. This flexibility makes it a versatile choice for various applications, such as personal digital assistants (PDAs), digital cameras, wireless mice, and other portable gadgets.

The device's high switching frequency of up to 100kHz allows the use of small, low-cost capacitors and inductors, further reducing the overall solution size. Moreover, it offers low battery detection and a shutdown feature that reduces the supply current to 0.5µA, which helps to preserve battery life during periods of inactivity.

Key features of the LTC1517CS5-5#TRPBF include:

• Fixed 5V Output Voltage
• Wide Input Voltage Range: 1.5V to 5V
• Low Quiescent Current: 20µA
• High Efficiency: Up to 90%
• Internal 1.0A Power Switch
• No External Schottky Diode Required
• Low Shutdown Current: 0.5µA
• High Switching Frequency: Up to 100kHz
• Compact SOT-23 Packaging

Overall, the LTC1517CS5-5#TRPBF by Linear Technology is an excellent choice for designers looking for a small, efficient, and easy-to-use step-up converter for their next low-power, portable project.