Product Profile :
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.
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