Introducing the LTC3125IDCBTRPBF from Linear Technology

The LTC3125IDCBTRPBF is a high-efficiency, 3MHz synchronous step-up DC/DC converter with a true output disconnect and inrush current limiting from Linear Technology. This compact and powerful integrated circuit (IC) is designed to provide a continuous output current of up to 200mA at a 5V output from a 2.7V input, making it an excellent choice for portable power applications.

With its wide input voltage range of 1.8V to 5.5V, the LTC3125IDCBTRPBF is versatile enough to be powered from various sources, including single or multiple-cell alkaline/NiMH/NiCd batteries, or even energy harvesting sources such as solar cells. The ability to maintain a regulated output voltage even when the input voltage falls below the output voltage sets this converter apart, ensuring reliable performance in multi-power source or fluctuating power conditions.

The LTC3125IDCBTRPBF utilizes a 1.22μH inductor and small ceramic capacitors to deliver a compact solution footprint. It features selectable Burst Mode® operation, which is critical for achieving high efficiency at low output currents, thus preserving battery life. The IC also includes soft-start capability to manage inrush current during startup, which is especially important in systems with delicate power sources or limited current availability.

Another key feature of this product is the true output disconnect during shutdown, which prevents any leakage current from the output to the input, further conserving battery life. Additionally, the integrated over-temperature protection ensures the device operates within safe temperature ranges, enhancing system reliability.

The LTC3125IDCBTRPBF comes in a low-profile (0.75mm) 6-lead DFN package with a compact footprint, making it suitable for space-constrained applications. Its robust design, including a 3MHz fixed frequency operation, allows for the use of tiny, low-cost capacitors and inductors while minimizing noise that could interfere with RF and other sensitive circuits.

Whether you're designing for handheld devices, backup power supplies, or energy harvesting systems, the LTC3125IDCBTRPBF provides a flexible, efficient, and reliable solution for your step-up conversion needs.