Product Overview: LTC1682IS8#PBF from Linear Technology

The LTC1682IS8#PBF is a high-efficiency, charge pump DC/DC converter designed by Linear Technology, a brand well-known for its high-performance analog integrated circuits. This device is specifically engineered to provide a simple and compact power solution for applications that require a regulated, negative voltage from a single positive input. It is housed in an 8-lead SOIC package, offering a space-saving footprint for space-constrained applications.

One of the standout features of the LTC1682IS8#PBF is its ability to generate a regulated negative output voltage that is either equal to the negative of the input voltage or regulated to a preset -5V output, depending on the version selected. This flexibility makes it suitable for a wide range of applications, including LCD bias supplies, portable devices, and op-amp power supplies where a negative rail is required.

The device operates with an input voltage range from 2.2V to 10V, making it compatible with various power sources, including single-cell lithium-ion batteries, multi-cell alkaline/NiCd/NiMH batteries, or regulated 5V and 3.3V power rails. Its high switching frequency of up to 10kHz allows the use of small, low-cost capacitors, reducing the overall solution size and cost.

Efficiency is a critical aspect of any power converter, and the LTC1682IS8#PBF does not disappoint. It features low quiescent current and a shutdown mode that reduces the supply current to less than 5µA, thereby extending battery life in portable applications. Additionally, the device includes built-in thermal protection and uses a low-noise switched-capacitor technology, which minimizes electromagnetic interference (EMI).

For designers seeking a reliable and efficient negative voltage supply solution, the LTC1682IS8#PBF offers a combination of compact size, flexibility, and performance. Its robust design and ease of use make it an excellent choice for a broad array of applications where board space is at a premium and power efficiency is paramount.