TOP244PN with AC/DC Converters 20 W 85-265 VAC 28 W 230 VAC is a high-efficiency, current-mode, analog-switching controller that works in off-line power supplies from 85VAC to 265VAC. This controller has a wide input voltage range and supports low-cost, unregulated power rectification, making it suitable for a variety of applications. It provides superior efficiency, improved dynamic response, and a variety of protections. The TOP244PN provides a full range protection package with input fuse and line overvoltage protection. It also offers output open circuit protection, short circuit protection, over temperature protection, and output overvoltage clamp. The device is manufactured by Power Integrations.