Fairchild introduces smart high-side switches

Solutions provide high reliability and space savings for body electronics

Fairchild Semiconductor has developed a smart high-side switch family that specifically addresses advanced electrical load control in automotive body electronics. The family provides an alternative to discrete MOSFET solutions, integrating protection and diagnostic features in order to reduce component count and PCB complexity, while offering better system reliability.

Fairchild explains that designers need to switch high currents into grounded resistive or inductive loads reliably and safely in applications such as incandescent lamps, motors, and heaters. To do this currently, they either have to rely on discrete or electro-mechanical solutions, or are hampered by limited solutions in the marketplace.

The FDDS100H06_F085 smart high-side switch is an N-channel power MOSFET with charge pump, ground-referenced CMOS-compatible input and diagnostic output with integrated protection functions. The diagnostic feedback capability of the FDDS100H06_F085 provides system control options to minimize impact under various fault conditions.

The FDBS09H04A_F085A and FDDS10H04A_F085A are smart high-side switches incorporating an N-channel power MOSFET device featuring a charge pump, current controlled input and diagnostic feedback with load current sense and integrated Smart Trench chip-on-chip technology.

The family consists of:

Part Number FDBS09H04A_F085A

Description High side N-channel power MOSFET with charge pump, current controlled input and diagnostic feedback

RDS(ON) 9 mΩ

I load (A) 48

Supply Voltage (V) 5.5 to 38

Package TO263_7L

Part Number FDDS10H04A_F085A

Description High side N-channel power MOSFET with charge pump, current controlled input and diagnostic feedback

RDS(ON) 10 mΩ

I load (A) 41

Supply Voltage (V) 5.5 to 38

Package TO252_5L

Part Number FDDS100H06_F085

Description High side N-channel power MOSFET with charge pump, ground-referenced CMOS compatible input and diagnostic output with integrated protective functions

RDS(ON) 100 mΩ

I load (A) 3

Supply Voltage (V) 5.5 to 37

Package TO252_5L

Devices in the family incorporate internal self-protection features that prevent damage to the end systems for conditions such as over temperature, shorted load, load dump and over-voltage, providing high reliability in demanding automotive applications.

Qualified to AEC Automotive standards, the FDDS100H06_F085, FDBS09H04A_F085A, and FDDS10H04_F085A also feature current limitation, short circuit protection, very low standby power, and ESD protection. The devices also feature optimized state electromagnetic compatibility.

The FDDS100H06_F085 and FDDS10H04_F085A are packaged in a TO252-5 lead package, while the FDBS09H04A_F085A is available in TO263-7 lead package.

Prices in 1,000 quantity pieces

FDDS100H06_F085: US $1.13

FDBS09H04A_F085A: US $1.95

FDDS10H04A_F085A: US $1.90

Availability: Samples available upon request

Delivery: 8-12 weeks ARO

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3. Maxim MAX15054 high-side FET driver simplifies buck and buck-boost HB LED driver designs