Renesas Electronics announced the availability of its lineup of five low-loss P-channel power MOSFET products, including the μPA2812T1L, optimized for use in charge control switches for lithium-ion secondary batteries and power management switches for power supply switching with AC adapters. Renesas has developed a new fabrication process employing ultrafine process technology, among other innovations, that reduces the on-resistance by half for the same effective area compared with the earlier process used to fabricate MOSFETs for similar applications. The five new products, including the μPA2812T1L, deliver low on-resistance in very compact packages. Earlier Renesas products delivered low on-resistance equivalent to the new μPA2812T1L but in a SOP-8 package about three times as large. Switching to the μPA2812T1L makes it possible to reduce the mounting area by around two thirds. This contributes to more compact power supply systems.
The five new products, of which the μPA2812T1L is one, have on-resistance ratings ranging from 4.2 mΩ to 12 mΩ (typ.). Customers can choose the product version that best meets their requirements in terms of operating current, environmental conditions, etc. The compact 3.3 mm square package provides excellent heat dispersion. It is designed to allow heat from inside the package to be dispersed to the mounting board via the exposed lead frame. Since the amount of heat around the device is less than with packages such as the SOP-8 with less efficient heat dispersion, it is possible to design Li-ion battery packs, etc., that are thinner and more compact. Renesas plans to further extend its lineup of power MOSFET devices with additional improved features and more compact packages. Kits combining power MOSFET devices and Li-ion battery charge control ICs, etc., will provide system designers with a broad array of flexible system solutions.
