Power Integrations, Inc. PMIC - PMIC - AC DC Converters, Offline Switchers - LNK6428E LNK6428E

The LNK6428E is part of the LinkSwitch-3 family of AC-DC converters designed for low power constant voltage and constant current applications. It integrates a high-voltage power MOSFET and a power supply controller into a single device, simplifying the design of CV/CC chargers by eliminating the need for an optocoupler and secondary control circuitry. The device operates with a programmable switching frequency of up to 85 kHz, which helps reduce transformer size and improve efficiency. This converter features advanced performance capabilities, including compensation for transformer inductance tolerances, input line voltage variations, cable voltage drop, and external component temperature variations. It also includes protection features such as auto-restart for output short-circuits and thermal shutdown with automatic recovery. The LNK6428E meets global energy efficiency regulations with low no-load consumption and operates efficiently even at very light loads. The device is suitable for applications such as chargers for cell phones, PDAs, and portable audio devices, making it a versatile choice for engineers looking for reliable and efficient power conversion solutions.