WT7181RM中文资料AC/DC切换稳压器数据手册Weltrend规格书

描述 Description

The WT7181RM is a high performance multi-mode (CCM/Valley Switching) Flyback PWM controller. It is specifically designed to work with USB PD controller to provide a total solution for USB PD or a programmable power adapter. It minimizes the components counts and is available in a tiny SOT-26 package. The controller operates in Continuous Current Mode (CCM) during heavy load and operates in discontinuous conduction mode with valley switching during light load. The WT7181RM helps to improve the overall efficiency and optimize the product performance. The controller provides with important protection features, such as DC Brown In/Out, Vo UVP, VDD OVP, OLP, OCP and Output Short Circuit Protection.

特性 Features

• Ultra-low Start-up Current (1.5uA Typ.)
• CCM/DCM/Valley-Switching Multi-Mode Operation
• Internal Soft-Start Function
• Green Package: SOT-26