In modern automotive applications, designers must reliably and safely switch high currents to ground resistors or inductive loads. These applications include incandescent lights, motors, and heaters. Currently, to achieve this, designers must use discrete or electromechanical solutions or face difficulties due to the limited solutions available on the market.

Fairchild Semiconductor (NYSE: FCS), a world-leading supplier of high-performance power and mobile products, has developed a family of smart high-side switches capable of supporting advanced electrical load control for automotive body electronics. The product family offers an alternative to discrete MOSFET solutions by integrating protection and diagnostic functions to reduce component count and PCB complexity while providing enhanced system reliability.

The FDDS100H06_F085 smart upper switch is an N-channel power MOSFET that provides a charge pump, ground-referenced CMOS-compatible input, and a diagnostic output with integrated protection functions. The diagnostic feedback performance of the FDDS100H06_F085 provides system control options that can minimize impact under various failure conditions.

FDBS09H04A_F085A and FDDS10H04A_F085A are smart high-side switches that integrate N-channel power MOSFET devices featuring a charge pump, current control input, diagnostic feedback through load current sensing function, and integrated smart trench chip-on-chip technology.



Devices in the Smart Upside Switch family provide high reliability in demanding automotive applications because they incorporate internal automatic protection functions that prevent damage to the end system under conditions such as overheating, short-circuit loads, load dumps, and overvoltage.

FDDS100H06_F085, FDBS09H04A_F085A, FDDS10H04_F085A, etc. have obtained AEC vehicle standard certification and also provide current limiting, short-circuit protection, ultra-low standby power, and ESD protection functions. The device also provides optimized electromagnetic compatibility.

FDDS100H06_F085 and FDDS10H04_F085A are available in TO252-5 lead packages, and FDBS09H04A_F085A is available in TO263-7 lead packages.

Fairchild can supply products that deliver reliable performance even in the most demanding automotive environments, including under-the-hood applications, through its expertise in power semiconductor devices and packaging modules integrated with comprehensive testing, simulation, and high-quality manufacturing. Fairchild’s engineering expertise and tools cover all aspects of design and analysis, including simulation performance, structural analysis, thermomechanical analysis, mold flow analysis, and device and package failure.
Fairchild Semiconductor: Solutions for Your Success™

Price: Price per unit based on a supply of 1,000 units

FDDS100H06_F085: 1.13 dollars
FDBS09H04A_F085A: $1.95
FDDS10H04A_F085A: 1.90 dollars

Status: Samples available upon request
Delivery: 8–12 weeks after order placement