Linear Technology LTC1872ES6#TR

The LTC1872ES6#TR is a high-performance, constant-frequency, current mode step-up DC/DC converter in a compact TSOT-23 package. Manufactured by Linear Technology, a leader in analog integrated circuits, this converter is designed to deliver a wide range of output voltages from a single power supply input. It is an ideal solution for battery-powered applications where space is at a premium and efficient power conversion is essential.

This versatile converter operates from an input voltage range of 2.6V to 9.8V, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as for power sources such as wall adapters and USB ports. The LTC1872ES6#TR is capable of producing output voltages up to 34V, and its internal 1.4A switch can deliver output currents up to several hundred milliamps, depending on the input voltage and inductor selection.

The LTC1872ES6#TR employs a constant-frequency, current mode architecture that provides excellent line and load regulation, as well as low output ripple. It features a fixed frequency of 550kHz, allowing the use of small, low-cost capacitors and inductors with low DC resistance (DCR). This high switching frequency also enables the device to achieve fast transient response and high efficiency.

Additional features of the LTC1872ES6#TR include a Burst Mode operation which is ideal for battery-powered applications due to its low quiescent current, thereby extending battery life. The device also includes a shutdown mode that reduces the supply current to under 10µA, further conserving battery life when the converter is not in use.

For protection and reliability, the LTC1872ES6#TR integrates features such as thermal shutdown, overvoltage protection, and a low-battery detector. These features ensure that the device operates within safe parameters, providing a robust power solution for sensitive electronic devices.

In summary, the LTC1872ES6#TR from Linear Technology is a powerful, efficient, and compact step-up DC/DC converter that is well-suited for portable electronics, where extended battery life and minimal board space are critical considerations.