LTC3533EDE#TRPBF

The LTC3533EDE#TRPBF is a highly efficient, fixed-frequency, buck-boost DC/DC converter from Linear Technology, now part of Analog Devices. This device is designed to operate from input voltages that are above, below, or equal to the output voltage, making it suitable for single-cell lithium-ion/polymer or multi-cell alkaline/NiMH applications.

Key electrical specifications include a wide input voltage range of 1.8V to 5.5V and an output voltage range up to 5.25V. It can provide 0.8A continuous output current when VIN > 1.8V, and up to 2A when VIN > 3V. The switching frequency is programmable from 300kHz to 2MHz, allowing for optimization of efficiency and component size. The converter features synchronous rectification for high efficiency, up to 96%.

Additional features include programmable Burst Mode operation for low quiescent current (40µA), output disconnect in shutdown, and a shutdown current of less than 1µA. The LTC3533EDE#TRPBF is housed in a small, thermally enhanced 14-lead DFN package measuring 3mm x 4mm x 0.75mm, suitable for surface mounting.

This converter is ideal for applications such as GSM modems, handheld instruments, digital cameras, smartphones, media players, and miniature hard disk drive power supplies where a regulated output voltage is required from a variable input source.