The LTC3374A has a peak efficiency of 94%, one output with ±1% voltage accuracy and up to seven additional outputs with ±2% accuracy. A temperature monitor with ±3°C accuracy is also included.
The LTC3374A features eight 1A channels with flexible sequencing and fault monitoring. Each channel is a high efficiency synchronous step-down regulator with its own independent 2.25 to 5.5V input supply and an output voltage range of 0.8V to VIN. Up to four adjacent buck regulators can be combined to provide 15 different output configurations and up to 4A of output current.
The LTC3374A's switching regulators operate in Burst Mode operation and forced continuous pulse width modulation mode. All of the switching regulators are internally compensated and need only external feedback resistors to set the output voltage. The bucks have input current limiting, soft-start to limit inrush current during start-up, and short-circuit protection. The device has a programmable and synchronisable 1MHz to 3MHz oscillator with a 2MHz default switching frequency. Other features include a die temperature monitor output and an over-temperature function.
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