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Step-up DC/DC converter features input current limit

Milpitas, Calif.— Linear Technology Corp. has developed a 1.6MHz, current mode, synchronous boost DC/DC converter with an accurate and programmable average input current limit.

Designated LTC3125, its internal 1.2A switches can deliver output voltages as high as 5.25V from an input voltage range of 1.8V to 5.5V, making it well-suited for Li-Ion/Polymer, 3.3V PC card slot or multicell alkaline/NiMH applications. The LTC3125 can deliver up to 500mA of continuous output current (at 5V) from a 3.3V input.

The LTC3125's average input current limit can be programmed between 200mA and 1000mA with ±5% accuracy. Synchronous rectification enables efficiencies up to 93% while Burst Mode operation lowers quiescent current to 15µA, providing extended battery run-time in handheld applications.

The LTC3125 can also operate in Buck mode, providing a regulated output lower than the input. It is housed in a 2mm x 3mm DFN-8 package, providing a tiny solution footprint and profile required in PC-card applications.

Pricing: Starts at $2.25 each in 1K quantities.
Availability: Now.
Datasheet: Click here.

Linear Technology, www.linear.com

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