FT839NB数据手册集成电路（IC）的ACDC转换器离线开关规格书PDF

描述 Description

The FT839NX/FT839MX controller device is optimized for high-performance, low power switching mode power supply applications. The FT839NX/FT839MX facilitates CC/CV charger design by eliminating an opto-coupler and TL431. Its highly integrated functions such as Under Voltage Lockout (UVLO), Leading Edge Blanking (LEB) and built-in cable compensation offer the users a high efficiency and low cost solution for AC/DC power applications. 
 
 
Power supplies built with FT839NX/FT839MX can achieve both highest average efficiency
，
 fast dynamic load response and super low standby power. FT839NX and FT839MX satisfy DoE Level 6 requirements with production margin from 5V/1A to 5V/2.4A applications, respectively.

 
Furthermore, FT839NX/FT839MX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT839NX is available in SOP8/DIP8 package.
 
FT839MX is available in SOP8 package.

特性 Features

   Constant-Current (CC) and Constant-Voltage (CV) with Primary Side Control
·   Proprietary technology enabling high efficiency and fast dynamic response
·   Satisfy DoE Level 6 requirements from 5V/1A to 5V/2.4A applications
·   No audible noise over entire operating range
·   Optimization for capacitive loading
·   Built-in power NPN/MOS
·   Built-in Cable Compensation
·   Built-in Line Compensation
·   Primary-side feedback eliminates opto-coupler and TL431
·   Cycle-by-Cycle Current Limiting
·   Over Temperature Protection
·   VCC Over Voltage Protection
·   CV Open-loop Protection
·   Excellent capacitive loading start-up performance

应用 Application

Ø   Adapter/Charger for Cell/Cordless Phones,
·PDAs, MP3 and Other Portable Apparatus
·Ø   Standby and Auxiliary Power Supplies
·Set Top Boxes (STB)
·Ø   Adapter for ADSL / WiFi Wireless
·Ø   AC/DC LED Driver applications