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FAN53745 - Buck Regulator

General Description

The FAN53745 is a low quiescent current step

converter that delivers a regulated output voltage from an input supply of 2.3 V to 5.5 V.

in power transistors, synchronous rectification, and a tiny solution size make the device ideal for portable app

Key Features

  • Proprietary Current Mode Architecture.
  • Wide Input Voltage Range: 2.3 V to 5.5 V.
  • 1 A Load Capability.
  • PFM / PWM Modes for High Efficiency.
  • I2C.
  • compatible Interface.
  • Programmable Output Voltage: 1.5 V to 3.3 V.
  • Programmable Current Limit: 440 mA to 2090 mA.
  • Internal Soft.
  • Start.
  • Protection Faults (OT, Input UVLO, Output Short and Reverse Current).
  • Automatic Pass.
  • Through Operation.
  • Hardware Reset when Holding SCL Low.

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FAN53741 Synchronous Buck Regulator
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Buck Regulator, Synchronous, 3.33 MHz, 1 A FAN53745 Description The FAN53745 is a low quiescent current step−down DC/DC converter that delivers a regulated output voltage from an input supply of 2.3 V to 5.5 V. The combination of built−in power transistors, synchronous rectification, and a tiny solution size make the device ideal for portable applications. The converter normally operates in PWM Mode at a typical fixed−frequency of 3.33 MHz. At moderate and light loads, the device will transition into PFM Mode to maintain high efficiency and excellent transient response. Additionally, a low power Shutdown Mode reduces power consumption when the device is disabled. The FAN53745 is available in 6−bump, 0.4 mm pitch, Wafer−Level Chip−Scale Package (WLCSP).