FR9889 Datasheet – 23V, 3A, 340KHz DC/DC Converter – Fiti

Part Number : FR9889

Function : Synchronous step-down DC/DC converter

Package : SOP8 Pin Type

Manufactures : Fitipower Integrated Technology ( http://www.fitipower.com/ )

Image
fr9889-converter

Description

The FR9889 is a synchronous step-down DC/DC converter that provides wide 4.5V to 23V input voltage range and 3A continuous load current capability. At light load condition, the FR9889 can operate at power saving mode to support high efficiency and reduce power lose. The FR9889 fault protection includes cycle-by-cycle current limit, UVLO, output overvoltage protection and thermal shutdown. The 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 about 1μA.

Pinout

fr9889-datasheet-pinout

Features

1. Low RDS(ON) Integrated Power MOSFET (120mΩ /100mΩ)
2. Internal Compensation Function
3. Internal Power Good Function
4. Wide Input Voltage Range: 4.5V to 23V
5. Adjustable Output Voltage Down to 0.925V
6. 3A Output Current
7. 340kHz Switching Frequency
8. External Programmable Soft-Start or Internal 600μs Soft-Start
9. Cycle-by-Cycle Current Limit
10. Over-Temperature Protection with Auto Recovery
11. OVP, UVLO
12. Hiccup Short Circuit Protection

 

Typical Circuit

fr9889-circuit

 

Official Homepage : http://www.fitipower.com/en_US/prodDetail.asp?id=212

 

FR9889 Datasheet