SI1128 - SANY Semiconductor

SI1128 High Precision CC/CV Primary-Side Controller

The SI1128 is an excellent primary side feedback controller, which integrates several functions of protections. It minimizes the components counts and is available in a tiny SOT-26 package. Those make it an ideal design for low cost applications. SI1128 is especially designed for below 10W application such as mobile phone charger application etc. It provides.

Features

◆ 5% Constant Voltage Regulation, 5%Constant Current Regulation at Universal AC input ◆ Primary-side Sensing and Regulation Without TL431 and Opto-coupler ◆ Low Start-up Current: 1μA (Typical) ◆ Low Static Current: 300μA (Typical) ◆ Programmable CV and CC Regulation ◆ Adjustable Constant Current and Output Power Setting ◆ Built-in Secondary Constant Current Control with Primary Side Feedback ◆ Peak-Current-Mode Control ◆ Compensates for transformer inductance tolerances ◆ Compensates for cable voltage drop ◆ Built-in Leading Edge Blanking (LEB) ◆ Cycle-by-Cycle Current Limiting ◆ VDD Under-Vol.