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Chinese
Fitipower FR9888 23V 3.5A Synchronous Step-Down DC-DC Converter IC – 340kHz Adjustable Buck Regulator, SOP-8 EP
Fitipower FR9888 is a 23V, 3.5A synchronous step-down DC/DC buck converter IC featuring a 4.5–23V input range, adjustable 0.925–20V output, fixed 340kHz switching frequency and up to 96% efficiency. Supplied in an SOP-8 exposed-pad SMD package with integrated MOSFETs and multiple protection functions.
Stock: 0SKU: SEN-CHINESE-FR9888Model: FR9888
BDT 100BDT 110
Final pricing may vary by configuration, quantity, delivery and project requirements.
Product overview
Fitipower FR9888 3.5A Synchronous Step-Down DC/DC Converter IC
The Fitipower FR9888 is a high-efficiency synchronous step-down (buck) DC/DC converter IC designed to convert a higher DC input voltage into a regulated lower output voltage. It supports a wide 4.5V to 23V input range and provides up to 3.5A continuous output current.
The FR9888 integrates high-side and low-side power MOSFETs and operates at a fixed 340kHz switching frequency. Its adjustable output can be configured from approximately 0.925V to 20V, making it suitable for televisions, set-top boxes, modems and distributed power systems.
Product Specifications
| Manufacturer | Fitipower Integrated Technology |
| Part Number | FR9888 |
| Device Type | Synchronous Step-Down DC/DC Converter |
| Regulator Type | Buck Converter |
| Input Voltage Range | 4.5V to 23V |
| Output Voltage Range | 0.925V to 20V Adjustable |
| Continuous Output Current | Up to 3.5A |
| Switching Frequency | 340kHz |
| Control Mode | Current Mode |
| Maximum Efficiency | Up to 96% |
| High-Side MOSFET RDS(on) | 110mΩ Typical |
| Low-Side MOSFET RDS(on) | 80mΩ Typical |
| Feedback Voltage | 0.925V Typical |
| Maximum Duty Cycle | 90% |
| Shutdown Current | Less Than 1µA |
| Package | SOP-8 Exposed Pad |
| Mounting | Surface Mount (SMD) |
Integrated Synchronous Power MOSFETs
The FR9888 incorporates both high-side and low-side power MOSFETs, reducing the number of external power components required compared with non-synchronous converter designs.
Integrated Protection Functions
- Cycle-by-Cycle Current Limiting
- Input Under-Voltage Lockout (UVLO)
- Output Over-Voltage Protection
- Over-Temperature Protection with Automatic Recovery
- Adjustable Soft-Start for Reduced Startup Inrush Current
Typical Applications
- LCD / LED Televisions
- Set-Top Boxes (STB)
- XDSL Modems
- Distributed Power Systems
- Embedded Electronics
- DC-DC Power Supply Boards
- Electronic Equipment Repair