The NE1101A-S0, NE1101B-S0, NE1101A-S0T, NE1101B-S0T, NE1101A-D0T, NE1101B-D0T are a current mode controller which contains advanced features to meet the stringent worldwide green energy requirements.
Among the advanced energy saving functionalities include the NE1101A/B include a low leakage high voltage startup current source that minimize no load standby power losses It has a PFC VCC pin which is capable of delivering 35mA to the front stage PFC controller.
This bias will cut off automatically when the IC enters Green mode under light load. This feature simplifies the PFC circuit design and reduces power losses Under light load, the NE1101A/B enters burst mode to maintain high efficiency operation The NE1101 also features frequency dithering function that spreads the EMI spectrum and saves the cost on EMI solution.
Other features that incorporated in the NE1101 are latched OVP, OCP, OTP functions, which is triggered by pulling CS pin above 3.0V and reset by pulling it to ground.
The switching frequency of NE1101A is internally fixed at 100KHz. The NE1101B is fixed at 65KHz.
These two versions are available in SO8 and DIP8 packages
Features
● Current mode control with Internal slope compensation
● High-Voltage Startup current source
● Peak current limited Burst mode
● Internal 2.5mS soft start
● Internal 200nS Leading Edge Blanking
● Cycle-by-Cycle current limit
● Latched OCP & OVP functions
● Frequency Jittering for EMI reduction
● Over Temperature, over load protections
● Automatic PFC bias supply output
Applications
● General 30W-100W flyback SMPS
● AC adaptor for Notebooks, Printers
● Off-line battery chargers
● LCD monitors, Set-Top boxes, power tools
● Open-frame SMPS
● Standby power for TVs, PCs, Home appliances
Among the advanced energy saving functionalities include the NE1101A/B include a low leakage high voltage startup current source that minimize no load standby power losses It has a PFC VCC pin which is capable of delivering 35mA to the front stage PFC controller.
This bias will cut off automatically when the IC enters Green mode under light load. This feature simplifies the PFC circuit design and reduces power losses Under light load, the NE1101A/B enters burst mode to maintain high efficiency operation The NE1101 also features frequency dithering function that spreads the EMI spectrum and saves the cost on EMI solution.
Other features that incorporated in the NE1101 are latched OVP, OCP, OTP functions, which is triggered by pulling CS pin above 3.0V and reset by pulling it to ground.
The switching frequency of NE1101A is internally fixed at 100KHz. The NE1101B is fixed at 65KHz.
These two versions are available in SO8 and DIP8 packages
Features
● Current mode control with Internal slope compensation
● High-Voltage Startup current source
● Peak current limited Burst mode
● Internal 2.5mS soft start
● Internal 200nS Leading Edge Blanking
● Cycle-by-Cycle current limit
● Latched OCP & OVP functions
● Frequency Jittering for EMI reduction
● Over Temperature, over load protections
● Automatic PFC bias supply output
Applications
● General 30W-100W flyback SMPS
● AC adaptor for Notebooks, Printers
● Off-line battery chargers
● LCD monitors, Set-Top boxes, power tools
● Open-frame SMPS
● Standby power for TVs, PCs, Home appliances