The FT839NX/FT839MX controller devices are optimized for high-performance, low-power switch-mode power supply applications. The FT839NX/FT839MX simplifies the design of CC/CV chargers by eliminating optocouplers and TL431. Its highly integrated features, such as undervoltage lockout (UVLO), leading-edge blanking (LEB), and built-in cable compensation, provide users with a highly efficient and low-cost AC/DC power supply application solution. Power supplies built using the FT839NX/FT839MX achieve the highest average efficiency, fast dynamic load response, and ultra-low standby power. The FT839NX and FT839MX meet US Department of Defense Level 6 requirements, respectively, with production margins ranging from 5V/1A to 5V/2.4A. In addition, the FT839NX/FT839MX features rich protection functions such as open-circuit protection and over-temperature protection to eliminate external protection circuits and provide reliable operation. The FT839NX is available in SOP8/DIP8 packages. The FT839MX is available in SOP8 package.

Product Introduction:

The FT839NX/FT839MX controller devices are optimized for high-performance, low-power switch-mode power supply applications. The FT839NX/FT839MX simplifies the design of CC/CV chargers by eliminating optocouplers and TL431. Its highly integrated features, such as undervoltage lockout (UVLO), leading-edge blanking (LEB), and built-in cable compensation, provide users with a highly efficient and low-cost AC/DC power supply application solution.
Power supplies built using the FT839NX/FT839MX achieve the highest average efficiency, fast dynamic load response, and ultra-low standby power. The FT839NX and FT839MX meet the US Department of Defense Level VI requirements, with production margins ranging from 5V/1A to 5V/2.4A.
In addition, the FT839NX/FT839MX features comprehensive protection functions, such as open-circuit protection and over-temperature protection, to eliminate external protection circuits and provide reliable operation. The FT839NX is available in SOP8/DIP8 packages. The FT839MX is available in SOP8 package.

Product Features:

Constant Current (CC) and Constant Voltage (CV) with primary-side control
Proprietary technology for high efficiency and fast dynamic response
Meets US Department of Defense Level VI requirements for 5V/1A to 5V/2.4A applications
No audible noise across the entire operating range
Optimized for capacitive loads
Built-in power NPN/MOS
Built-in cable compensation
Built-in line compensation
Primary-side feedback eliminates optocouplers and TL431
Cycle-by-cycle current limiting
Over-temperature protection
VCC overvoltage protection
CV open-loop protection
Excellent capacitive load start-up performance