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 )


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FR9888 image


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


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1. Set-Top-Box (STB)
2. Television
3. Distributed Power System
4. XDSL Modem

FR9888 Datasheet PDF