Vishay Intertechnology, Inc. (NYSE: VSH) announced the industry’s first power MOSFETs with on-resistance ratings at a 1.2-V gate-to-source voltage, a move that will help designers simplify power management circuitry while extending battery run times in portable electronic systems.
The new 1.2-V-rated Vishay Siliconix TrenchFET(R) devices bring the MOSFET turn-on voltage into alignment with the 1.2-V to 1.3-V operating voltages of digital ICs used in mobile electronics, enabling safer and more reliable designs. As the first power MOSFETs that can be driven directly from 1.2-V buses, the new TrenchFETs provide the additional potential benefit of eliminating the need for an extra conversion stage in battery-operated systems with a core voltage lower than 1.8 V.
In MOSFETs for which 1.5 V is the lowest rating, on-resistance tends to increase exponentially at lower, unspecified gate-to-source voltages such as 1.2 V. By contrast, these new 1.2-V TrenchFETs offer guaranteed low n-channel on-resistance as low as 0.041 ohms and p-channel on-resistance as low as 0.095 ohms at a 1.2-V gate drive. On-resistance performance at a 1.5-V gate drive is better than in devices for which 1.5 V is the lowest gate-to-source specification: as low as 0.022 (n-channel) and 0.058 (p-channel).
The devices released today (and their package types) are the n-channel SiA414DJ (PowerPAK(R) SC-70), Si8424DB (MICRO FOOT(R)), and SiB414DK (PowerPAK SC75), and the p-channel SiA417DJ (PowerPAK SC-70), Si8429DB (MICRO FOOT), and SiB417DK (PowerPAK SC-75). The previously released p-channel Si1499DH in the SC-70 package completes Vishay’s 1.2-V power MOSFET offerings.
Typical applications for the new devices include load, power amplifier, and battery charger switching in cell phones, PDAs, MP3 players, digital cameras, and other portable systems. In addition to saving on battery power with their low on-resistance, the new devices will save on space with package dimensions as small as 1.5 mm by 1.5 mm.
Samples and production quantities of all seven 1.2-V devices are available now, with lead times of eight to 10 weeks for larger orders.
Vishay Intertechnology, Inc., a Fortune 1,000 Company listed on the NYSE (VSH), is one of the world’s largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, and optoelectronics and selected ICs) and passive electronic components (resistors, capacitors, inductors, sensors, and transducers). These components are used in virtually all types of electronic devices and equipment in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, and medical markets. Its product innovations, successful acquisition strategy, and ability to provide “one-stop shop” service have made Vishay a global industry leader.
TrenchFET, PowerPAK, and MICRO FOOT are registered trademarks of Siliconix incorporated.