Quasi Resonant Green Mode PWM Controller  
Part No. Features Function VCC UVLO (Typ.) IST CS(V) Duty Cycle FOSC Package
Max. Vcc(ON) Vcc(OFF) Typ.  Typ.  Max. Green Typ.
UC3801 LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Proprietary frequency hopping for
   Improved EMI performance
* Cycle-by-cycle current limiting
* CCM/Valley Switching Operation
* Dynamic peak current limiting for
   constant output power
* Built-in synchronized slope compensation
* Gate output voltage clamped at 16V
* Adjustable DC output OVP/UVP/OTP
* OLP/VCC OVP/OTP/BNO/LNO
   (automatic recovery)
* Internal Soft Start
36.0V 15.8V 7.6 1uA 0.88V 71% Internal Fixed SOT-26
20KHz 65KHz
UC3816 LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Proprietary frequency hopping for
   Improved EMI performance
* Cycle-by-cycle current limiting
* CCM/Valley Switching Operation
* Dynamic peak current limiting for
   constant output power
* Built-in synchronized slope compensation
* Adjustable DC output OVP
* OLP/VCC OVP/OTP/BNO/LNO
   (automatic recovery)
* Internal Soft Start
36.0V A:17.5V
B:14.5V
A:7.5V
B:7.3V
1uA 0.85V 66% Internal Fixed SOT-26
20KHz 65KHz
UC3916A LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
HV_Startup
* Proprietary frequency hopping for
   Improved EMI performance
* Cycle-by-cycle current limiting
* CCM/Valley Switching Operation
* Dynamic peak current limiting for
   constant output power
* Built-in synchronized slope compensation
* Adjustable DC output OVP
* OLP/VCC OVP/OTP/BNO/LNO
   (automatic recovery)
* Internal Soft Start
36.0V 20.0V 8.2V 1.4mA
(HV_Pin)
0.85V 66% Internal Fixed SOP-8
20KHz 65KHz
UC3879A LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
HV_Startup
* Built in x-cap discharge function
* Proprietary frequency hopping for
   Improved EMI performance
* Cycle-by-cycle current limiting
* CCM/Valley Switching Operation
* Dynamic peak current limiting for
   constant output power
* Built-in synchronized slope compensation
* Adjustable DC output OVP
* OLP/VCC OVP/OTP/BNO/LNO
   (automatic recovery)
* Internal Soft Start
36.0V 15.0V 8.2V 1.3mA
(HV_Pin)
0.81V 75% Internal Fixed SOP-8
20KHz 65KHz
UC3862* LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
* Proprietary frequency hopping for
   Improved EMI performance
* Cycle-by-cycle current limiting
* CCM/Valley Switching Operation
* Dynamic peak current limiting for
   constant output power
* Built-in synchronized slope compensation
* Adjustable DC output OVP/UVP/OTP
* OLP/VCC OVP/OTP/BNO/LNO
   (automatic recovery)
* Internal Soft Start
36.0V 17.0V 7.6V 1uA 0.59V 64% Internal Fixed SOT-26
20KHz 65KHz
UC3823* LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Proprietary frequency hopping for
   Improved EMI performance
* Cycle-by-cycle current limiting
* CCM/Valley Switching Operation
* Dynamic peak current limiting for
   constant output power
* Built-in synchronized slope compensation
* Adjustable DC output OVP/UVP/OTP
* OLP/VCC OVP/OTP/BNO/LNO
   (automatic recovery)
* Internal Soft Start
36.0V 16.4V 7.6V 1uA 0.66V 70% Internal Fixed SOT-26
20KHz 65KHz
*Under  Development
啃僅