PALM BAY, FLA. Intersil Corp. has launched its first low-voltage power FETs in trench technology. The ITF861 and ITF870 families of 20- and 30-volt n- and p-channel MOSFETs focus on power management for notebook PCs, cellular telephones and lithium-ion battery packs.
The devices provide low on-resistance, low gate charge and fast recovery time to minimize total losses in switching regulators and the like, whether applied as high-side or low-side elements.
The ITF861xx family of 30-V logic-level MOSFETs includes single p-channel, single n-channel and dual n-channel devices. The p-channel devices perform high-side load control switching in ACPI circuits and in notebook PCs like battery-disconnect and battery-charge switching.
The n-channel devices perform low-side load control switching and can be deployed in controller circuits for switching regulators. One of the family's single-gate, n-channel offerings (on-resistance of 7.8 milliohms) is particularly useful for servers and RAID-type applications, serving as the 5- and 3.3-V supply rail switch in hot-plug applications.
The company's ITF870xx offerings, on the other hand, are rated at 20 V, and are sublogic-level devices with both single and dual p- and n-channel options. The p-channel devices perform as high-side load-control switches in cellular telephone tasks, with the capacity to serve as battery charge switch, power amplifier switch or reverse blocking switch in dual battery applications. The family's single-gate, n-channel device performs as a low-side control switch in buck- or boost-converter configurations. The family's dual n-channel device serves as part of the battery-protection circuitry in lithium-ion battery packs for cellular phones.
The devices, sampling now, will be available in volume quantities in February. Pricing for the 30-V series (available in SO8 and TSSOP8 packages) ranges from 54 cents to 78 cents each, in 25k to 50k quantities. The 20-V family (in SO8s, TSSOP8s and TSOP6 packages) ranges from 22 cents to 81 cents each in the same quantities.
EETInfo No. 606