Product Overview: LTC3522EUD#PBF

The LTC3522EUD#PBF is a high-performance, dual-channel, synchronous step-up DC/DC converter designed by Linear Technology, now part of Analog Devices. This compact and efficient power solution is ideal for battery-powered applications where space is at a premium and extended battery life is essential.

Key Features

• Voltage Range: The LTC3522 operates from an input voltage range of 0.85V to 5.5V, making it suitable for single-cell Li-Ion/Polymer or multi-cell alkaline/NiMH applications.
• Dual Outputs: It provides two independent output voltages that can be set between 2.5V and 5.25V with external resistors, delivering up to 400mA of continuous output current from each channel.
• High Efficiency: With its synchronous rectification and 1.2MHz fixed switching frequency, the LTC3522EUD#PBF achieves efficiencies up to 94%.
• Low Quiescent Current: The device features a low quiescent current of only 25µA, which is critical for maximizing battery life in portable applications.
• Burst Mode® Operation: For further power savings, the LTC3522 incorporates Burst Mode operation, which reduces the quiescent current to just 1µA during light load conditions.
• Thermal Protection: It includes thermal shutdown and current limiting to protect the device under over-temperature or over-current conditions.
• Compact Package: The LTC3522EUD#PBF comes in a 16-lead QFN (3mm x 3mm) package, ideal for space-constrained applications.

Applications

The LTC3522EUD#PBF is versatile and can be used in a variety of portable electronic devices. Some common applications include:

• Handheld Instruments
• Medical Devices
• Wireless Transmitters and GPS Devices
• Portable Media Players and Digital Cameras

Conclusion

With its dual-channel output, high efficiency, and low power consumption, the LTC3522EUD#PBF from Linear Technology is an excellent choice for designers looking to optimize power management in their next-generation portable devices. Its small footprint and robust feature set ensure reliable performance in the most demanding applications.