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FAN53525 Datasheet Digitally Programmable TinyBuck Regulator

Manufacturer: Fairchild (now onsemi)

Overview: FAN53525 — 3.0 A, 2.4 MHz, Digitally Programmable TinyBuck® Regulator July 2014 FAN53525 3.0A, 2.

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General Description

The FAN53525 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5 V to 5.5 V.

The output voltage is programmed through an I2C interface capable of operating up to 3.4 MHz.

Using a proprietary architecture with synchronous rectification, the FAN53525 is capable of delivering 3.0 A continuous at over 80% efficiency, maintaining that efficiency at load currents as low as 10 mA.

Key Features

  • Fixed-Frequency Operation: 2.4 MHz.
  • Best-in-Class Load Transient.
  • Continuous Output Current Capability: 3.0 A.
  • 2.5 V to 5.5 V Input Voltage Range.
  • Digitally Programmable Output Voltage: - 0.600 V to 1.39375 V in 6.25 mV Steps.
  • Programmable Slew Rate for Voltage Transitions.
  • I2C-Compatible Interface Up to 3.4 Mbps.
  • PFM Mode for High Efficiency in Light Load.
  • Quiescent Current in PFM Mode: 50 µA (Typical).
  • Input Under-Voltage Lockout (UVLO).

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