Linear Technology's LT1619EMS8#PBF - Step-Up DC/DC Converter

The LT1619EMS8#PBF is a compact, high-efficiency step-up DC/DC converter from Linear Technology, designed for powering portable devices that require a small footprint and high performance. It is housed in an MSOP-8 package, which is ideal for space-constrained applications. The LT1619EMS8#PBF is capable of generating a fixed or adjustable output voltage up to 34V from an input voltage as low as 1.1V, making it suitable for single-cell Li-Ion batteries or multi-cell battery configurations.

One of the key features of the LT1619EMS8#PBF is its internal 1.4A, 36V switch, which allows it to deliver output currents up to several hundred milliamperes depending on the input voltage and output voltage. The switching frequency is internally set to 1.25MHz, allowing the use of small, low-cost capacitors and inductors while minimizing the overall solution footprint.

The device offers high efficiencies, which can reach up to 90%, thanks to its low quiescent current and the Burst Mode® operation, which reduces the quiescent current to only 110µA during light load conditions. This feature is particularly important for battery-powered applications, where extending battery life is crucial.

For protection and reliability, the LT1619EMS8#PBF includes features such as soft-start capability to limit inrush current during startup, thermal shutdown, and current limit. The soft-start function is programmable with an external capacitor, which allows the user to set the start-up time as desired. Moreover, the device is stable with ceramic output capacitors, which provides additional flexibility in component selection.

The LT1619EMS8#PBF is versatile and can be used in a variety of applications, including TFT-LCD bias supplies, GPS, PDAs, digital cameras, and other portable devices where efficient power conversion is necessary. Its performance, small size, and feature set make it an excellent choice for designers looking to optimize their power management solutions.

Overall, the LT1619EMS8#PBF by Linear Technology is a robust and reliable choice for any application requiring a high-efficiency, high-voltage boost converter in a compact package.