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.?
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Power supplies built with FT839NX/FT839MX can achieve both highest average efficiency
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?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.

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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.
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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

應(yīng)用 Application

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