Fairchild – FAN53525: 3.0A, 2.4MHz, Digitally Programmable TinyBuck® Regulator

FAN53525: 3.0A, 2.4MHz, Digitally Programmable TinyBuck® Regulator

The FAN53525 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5V to 5.5V. The output voltage is programmed through an I2C interface capable of operating up to 3.4MHz. Using a proprietary architecture with synchronous rectification, the FAN53525 is capable of delivering 3.0A continuous at over 80% efficiency, maintaining that efficiency at load currents as low as 10mA.


  • 3.0A continuous output current capability
  • Best in class load transient
  • 2.5V to 5.5V input voltage range
  • Digitally programmable output voltage: 0.600V to 1.39375V in 6.25mV steps
  • 50µA quiescent current in PFM mode
  • Programmable slew rate for voltage transitions
  • PFM mode for high efficiency in light load
  • Input under-voltage lockout (UVLO)
  • Thermal shutdown and overload protection
  • 15-bump wafer-level chip scale package (WLCSP)

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