Product category:
Discrete Power Devices
News Release from: Vishay Siliconix | Subject: 1.2V power mosfets
Edited by the Electronicstalk Editorial
Team on 16 August 2007
1.2V-rated MOSFETs ease portable power
management
Devices bring the MOSFET turn-on voltage into alignment with the 1.2 to 1.3V operating voltages of digital ICs used in mobile electronics, enabling safer and more reliable designs.
Vishay Intertechnology has come up with the industry's first power MOSFETs with on-resistance ratings specified at a 1.2V 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 1.2V-rated Vishay Siliconix TrenchFET devices bring the MOSFET turn-on voltage into alignment with the 1.2 to 1.3V operating voltages of digital ICs used in mobile electronics, enabling safer and more reliable designs
This article was originally published on Electronicstalk on 17 Jun 2003 at 8.00am (UK)
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As the first power MOSFETs that can be driven directly from 1.2V 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 1.8V.
In MOSFETs for which 1.5V is the lowest rating, on-resistance tends to increase exponentially at lower, unspecified gate-to-source voltages such as 1.2V.
By contrast, these new 1.2V TrenchFETs offer guaranteed N-channel on-resistance as low as 41mohm and P-channel on-resistance as low as 95mohm at a 1.2V gate drive.
On-resistance performance at a 1.5V gate drive is better than in devices for which 1.5V is the lowest gate-to-source specification: as low as 22mohm (N-channel) and 58mohm (P-channel).
The latest devices are the N-channel SiA414DJ (PowerPAK SC-70), Si8424DB (Micro Foot) and SiB414DK (PowerPAK SC-75), 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 1.2V power MOSFET offerings.
Typical applications for the new devices include load, power amplifier and battery charger switching in cellphones, 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 x 1.5mm.
Samples and production quantities of all seven 1.2V devices are available now, with lead times of eight to 10 weeks for larger orders.
Pricing for US delivery starts at $0.15 each in 100,000-piece quantities.
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