FR9855SP

The FR9855SP is a high-performance, low-power DC-DC buck converter IC designed for efficient voltage regulation in various electronic applications. It features a wide input voltage range (4.5V–18V), adjustable output voltage, and a maximum output current of 3A.
Key highlights:
- High efficiency (up to 95%) with synchronous rectification.
- Fixed 500kHz switching frequency, reducing external component size.
- Built-in protections (overcurrent, over-temperature, and short-circuit).
- Compact SOP-8 package, suitable for space-constrained designs.
Commonly used in consumer electronics, networking devices, and industrial systems, the FR9855SP provides stable power conversion with minimal external components. Its low standby current makes it ideal for battery-powered applications.
For detailed specs, refer to the datasheet.

Equivalent products to the FR9855SP (a synchronous buck converter IC) include:
- MP2307 (Monolithic Power Systems)
- LM2675 (Texas Instruments)
- AP1501 (Diodes Incorporated)
- RT8059 (Richtek)
These chips offer similar specifications (e.g., input voltage, output current, and switching frequency). Always verify pin compatibility and electrical characteristics before substitution.

The FR9855SP is a synchronous buck converter IC. It has 8 pins with the following key functions:
1. VIN (Pin 1) – Input voltage supply.
2. SW (Pin 2) – Switching node connected to the inductor.
3. GND (Pin 3, 5, 6, 7) – Ground connections (multiple pins for better heat dissipation).
4. FB (Pin 4) – Feedback pin for output voltage regulation.
5. EN (Pin 8) – Enable control (high to activate, low to disable).
It operates at high efficiency, supports wide input voltage (4.5V–23V), and delivers up to 3A output current. The compact SOP-8 package makes it suitable for space-constrained applications.

The FR9855SP is manufactured by Fortior Tech, a Chinese semiconductor company specializing in power management ICs, motor drivers, and LED drivers. Founded in 2012 and headquartered in Shenzhen, Fortior Tech focuses on high-performance analog and mixed-signal solutions for consumer electronics, automotive, and industrial applications. The company is known for cost-effective, reliable components and holds several patents in power management technology. The FR9855SP is a synchronous buck converter IC designed for efficient voltage regulation. Fortior Tech serves global markets with a strong presence in Asia.

The FR9855SP is a synchronous buck DC-DC converter IC, commonly used in:
1. Consumer Electronics – Power supplies for TVs, set-top boxes, and routers.
2. Industrial Equipment – Voltage regulation in automation and control systems.
3. Networking Devices – Switches, modems, and servers.
4. Automotive Electronics – Infotainment and ADAS systems.
5. LED Lighting – Drivers for high-efficiency LED applications.
It features high efficiency, compact design, and stable output, making it suitable for space-constrained and power-sensitive applications.

The FR9855SP is typically available in a TO-252 (DPAK) package, a surface-mount power transistor package with good thermal performance. It’s commonly used for voltage regulators and power management ICs. The package has three leads and a metal tab for heat dissipation. Exact details may vary by manufacturer, so check the datasheet for specifics.