Power convertors shrink into SO-8 packaging

All members of the LinkSwitch-TN, -LP and -XT families of ICs are now available in SO-8 packaging, enabling emerging applications such as LED lamps and miniature chargers.

All members of the LinkSwitch-TN, -LP and -XT families of ICs are now available in SO-8 packaging, enabling emerging applications such as LED lamps and miniature chargers.

The LinkSwitch devices are fully monolithic 700V buck and flyback power convertor ICs that are capable of both operating directly off a universal (85 to 265V AC) AC mains input and providing a low-voltage constant-voltage/constant-current (CV/CC) output.

These small devices are ideally suited for powering applications with significant circuit-sise constraints, such as slimline cellphone chargers, small appliances, LED lamps and other miniaturised electronic equipment.

Power Integrations' power conversion ICs combine high-voltage analogue and low-voltage control circuitry on the same die, which reduces the board area consumed by the power supply, enhances reliability and improves output power quality.

According to Don Ashley, Product Marketing Manager for AC/DC Products at Power Integrations: "New applications such as incandescent-replacement LED lightbulbs demand miniature electronic circuitry".

"LED lightbulbs require a power supply that fits inside the compact base dimension of a standard Edison (E27) socket".

"Our LinkSwitch ICs in the SO-8 package are a key enabler for this emerging application".

LinkSwitch-TN ICs (LNK302, 304, 305 and 306) deliver the current levels required by high-brightness LED lamp manufacturers.

LinkSwitch-LP ICs (LNK562, 563 and 564) and the higher power LinkSwitch-XT ICs (LNK362, 363 and 364) deliver the constant voltage/constant current (CV/CC) required to precisely charge cellphone batteries.

These devices are available today.

Prices for new LinkSwitch products range from US $0.53 to $0.78 in 1000-unit quantities.

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