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FAN53540 Datasheet Synchronous Buck Regulator

Manufacturer: Fairchild (now onsemi)

Overview: FAN53540 — 2.4 MHz, 5 A TinyBuck™ Synchronous Buck Regulator July 2014 FAN53540 2.

General Description

The FAN53540 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2.7 V to 5.5 V.

Using a proprietary architecture with synchronous rectification, the FAN53540 is capable of delivering 5 A at over 90% efficiency, while maintaining a very high efficiency of over 80% at load currents as low as 2 mA.

The regulator operates at a nominal fixed frequency of 2.4 MHz, which reduces the value of the external ponents to 470 nH for the output inductor and 20 µF for the output capacitor.

Key Features

  • 2.4 MHz Fixed-Frequency Operation.
  • Best-in-Class Load Transient Response.
  • 5 A Output Current Capability.
  • 2.7 V to 5.5 V Input Voltage Range.
  • Adjustable Output Voltage: 0.8V to 90% of VIN.
  • PFM Mode for High Efficiency in Light Load (Forced PWM Available on MODE Pin).
  • 50 µA Typical Quiescent Current in PFM Mode.
  • External Frequency Synchronization.
  • Low Ripple Light-Load PFM Mode with Forced PWM Control.
  • Power Good Output.
  • Internal Soft-Start.

More Datasheets from Fairchild (now onsemi)

Part Number Description
FAN53541 Synchronous Buck Regulator
FAN5350 3MHz 600mA DC/DC Buck Converter
FAN53525 Digitally Programmable TinyBuck Regulator
FAN5355 3MHz Digitally Programmable Regulator
FAN53555 Digitally Programmable TinyBuck Regulator
FAN5358 SC70 Synchronous Buck Regulator
FAN5307 High-Efficiency Step-Down DC-DC Converter
FAN5308 800mA High-Efficiency Step-Down DC-DC Converter
FAN53168 6-Bit VID Controlled 2-4 Phase DC-DC Controller
FAN53180 6-Bit VID Controlled 2-4 Phase DC-DC Controller

FAN53540 Distributor