FR9888 PDF – 340KHz, Step-Down DC/DC Converter

Part Number: FR9888

Function: 340KHz, Synchronous Step-Down DC/DC Converter

Package: SOP 8 Pin Type

Manufacturer: Fiti ( fitipower integrated technology lnc )

Images:FR9888 pdf pinout


The FR9888 is a synchronous step-down DC/DC converter that provides wide 4.5V to 23V input voltage range and 3A continuous load current capability. Fault protection includes cycle-by-cycle current limit, input UVLO, output over voltage protection and thermal shutdown. Besides, adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme that provides fast transient response. In shutdown mode, the supply current is about 1uA.


1. High Efficiency up to 96%

2. Low Rds(on) Integrated Power MOSFET

3. Internal Compensation Function

4. Wide Input Voltage Range: 4.5V to 23V

5. Adjustable Output Voltage Range: 0.925V to 20V

6. 3.5A Output Current

7. Fixed 340KHz Switching Frequency

8. Current Mode Operation

9. Adjustable Soft-Start

10. Cycle-by-Cycle current limit

11. Input Under Voltage Lockout

FR9888 datasheet converter


1. Set-Top-Box (STB)

2. Television

3. Distributed Power System

4. XDSL Modem

FR9888 PDF Datasheet