The LTC3528BEDDB-2#TRPBF is a versatile and compact dual output step-up DC/DC converter from Linear Technology, designed to cater to a wide range of applications requiring efficient power conversion. This high-performance component is ideal for portable devices, owing to its small footprint and ability to provide two independently regulated output voltages from a single input source.

Key Features:

• Wide Input Voltage Range: The converter operates over a 1.5V to 5.5V input voltage range, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as other standard power sources.
• Dual Independent Outputs: It provides two outputs with voltages up to 5.25V, which can be set by external resistors. This feature allows for simultaneous powering of different voltage domains in a system.
• High Efficiency: The LTC3528BEDDB-2#TRPBF employs synchronous rectification, achieving efficiencies up to 94%. This helps prolong battery life in portable applications.
• Adjustable Switching Frequency: The switching frequency can be programmed between 1.2MHz and 2MHz or synchronized to an external clock, allowing flexibility in balancing efficiency and external component size.
• Low Quiescent Current: Its low quiescent current of 25uA (per channel) during operation and 1uA in shutdown ensures minimal drain on the battery when the device is not actively boosting voltage.

Applications:

• Portable Medical Devices
• Handheld Instruments
• GPS Devices
• Wireless Transmitters
• MP3 Players

With its thermally efficient, 12-lead (3mm × 3mm) DFN package, the LTC3528BEDDB-2#TRPBF minimizes the board space required for power management. Its internal soft-start capability reduces inrush current during startup, contributing to system reliability. The device also features over-temperature protection and current limiting to safeguard against abnormal operating conditions.

Linear Technology's LTC3528BEDDB-2#TRPBF is a robust solution for designers looking to enhance the performance and extend the battery life of their dual output power supply applications without compromising on space or efficiency.