Linear has 1A buck dc/dc converters for multi-rail systems
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Featuring eight independent 1A channels with I2C control, flexible sequencing and fault monitoring, Linear's new LTC3375 power management solution is targeted at systems requiring multiple low voltage power supplies.
Each channel is a synchronous step down regulator with its own independent 2.25 to 5.5V input supply and an output voltage range of 0.425V to VIN.
In addition, the LTC3375's buck dc/dc converters can be connected in parallel to achieve higher output currents up to 4A per output with a single shared inductor. Up to four adjacent regulators can be combined, resulting in 15 different possible output configurations.
All of the switching regulators are internally compensated and only require external feedback resistors to set the default output voltage.
Suitable for a range of multichannel applications including industrial, automotive and communications systems, the LTC3375 features a programmable and synchronisable 1 to 3MHz oscillator with a 2MHz default switching frequency.
The device also contains a high voltage input shunt regulator controller, with quiescent current rated at 11µA with all dc/dcs off.
