The LP3907 is a
multi-function, programmable power management unit (PMU) optimized for low-power FPGAs,
microprocessors, and DSPs. This device integrates two highly efficient 1-A, 600-mA step-down DC-DC
converters with dynamic voltage scaling (DVS), two 300-mA linear regulators, and a 400-kHz
I2C interface to allow a host controller access to the internal control
registers of the device. The LP3907 additionally features programmable power-on sequencing.
Features include programmable power-on sequencing, communication control (I2C), dynamic
voltage scaling, overcurrent protection, Power Good, synchronous rectification, thermal shutdown,
and undervoltage lockout. For applications requiring light loads, the high-efficiency synchronous
switching buck regulators enter PFM mode and operate with reduced switching frequency and supply
current to maintain high efficiency at very light loads.
For all available packages, see the orderable addendum at the
end of the data sheet.
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