Linear Technology LTC3400BES6#TR - Efficient, Compact Step-Up DC/DC Converter

The LTC3400BES6#TR from Linear Technology is a high-efficiency, monolithic synchronous step-up DC/DC converter that is ideally suited for portable electronic applications. This compact device is capable of delivering up to 300mA of continuous output current at voltages as high as 5.5V from a single-cell lithium-ion battery. Its small form factor and high level of integration make it an excellent choice for space-constrained applications.

With its internal 0.5A switches, the LTC3400BES6#TR can provide a high level of power in a tiny SOT-23 package, ensuring a minimal footprint on your PCB. The device operates at a fixed frequency of 1.2MHz, allowing the use of tiny, low-cost capacitors and inductors while also providing low, predictable output noise that is easy to filter. The high switching frequency also enables the converter to start up under full load with an input voltage as low as 0.85V, after which it can run down to 0.5V with reduced load current.

This step-up converter features automatic shifting to power saving Burst Mode operation at light loads, which significantly improves efficiency. The LTC3400BES6#TR also includes a low-battery detector, current limiting, and thermal protection to safeguard the device and the load under abnormal operating conditions. Its quiescent current is a mere 20uA, making it an energy-efficient choice for battery-powered devices.

The LTC3400BES6#TR is designed for a range of applications, including PDAs, cellular phones, wireless modems, handheld instruments, MP3 players, digital cameras, and other portable devices where efficient power conversion is critical. It is also suitable for multiple-cell alkaline/NiMH applications or regulated power supplies from a standard 5V rail.

Overall, the LTC3400BES6#TR is a robust, efficient, and versatile solution for modern portable electronics, combining Linear Technology's reputation for high-performance power management solutions with the practical needs of compact, energy-sensitive devices.