FMD Confidential
Fremont Micro Devices
Preliminary FT839NX/839MX
High Efficiency Off-Line CC/CV Switch
FEATURES
Co...
FMD Confidential
Fremont Micro Devices
Preliminary FT839NX/839MX
High Efficiency Off-Line CC/CV Switch
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
TYPICAL 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 application...