Product Profile :
The FT838NB/FT838RNA controller device is optimized for high-performance, low power switching mode power supply applications. The FT838NB/FT838RNA 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 FT838NB can achieve both highest average efficiency and fast dynamic load response. FT838RNA is optimized for LED driver applications with slightly higher (~22uA) standby current.
Furthermore, FT838NB/FT838RNA features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT838NB/FT838RNA 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
No audible noise over entire operating range
Built-in power NPN
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
Open Circuit ProtectionMore details