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FR9801 - 600KHz Synchronous Step-Down DC/DC Converter

General Description

The FR9801 is a synchronous step-down DC/DC converter that provides wide 4.5V to 21V input voltage range and 2A continuous load current capability.

The FR9801 fault protection includes cycle-by-cycle current limit, UVLO, output overvoltage protection and thermal shutdown.

Key Features

  • High Efficiency up to 94%.
  • Low RDS(ON) Integrated Power MOSFET.
  • Internal Compensation Function.
  • Wide Input Voltage Range: 4.5V to 21V.
  • Adjustable Output Voltage from 0.8V to 17.85V.
  • 2A Output Current.
  • Fixed 600KHz Switching Frequency.
  • Current Mode Operation.
  • Cycle-by-Cycle Current Limit.
  • Over-Temperature Protection with Auto Recovery.
  • Output Overvoltage Protection.
  • Under Voltage Lockout.

📥 Download Datasheet

Datasheet Details

Part number FR9801
Manufacturer Fiti
File Size 1.04 MB
Description 600KHz Synchronous Step-Down DC/DC Converter
Datasheet download datasheet FR9801 Datasheet

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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fitipower integrated technology lnc. FR9801 21V, 2A, 600KHz Synchronous Step-Dow85nT DC/DC Converter Description The FR9801 is a synchronous step-down DC/DC converter that provides wide 4.5V to 21V input voltage range and 2A continuous load current capability. The FR9801 fault protection includes cycle-by-cycle current limit, UVLO, output overvoltage protection and thermal shutdown. The adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme which provides fast transient response. Internal compensation function reduces external compensation components and simplifies the design process. In shutdown mode, the supply current is less than 1μA. The FR9801 is available in SOT-23-6 package and provides good thermal conductance.