| Secondary Side Regulation 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. | ||||
| UC3800/B | LOW
COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Dynamic peak current limiting for constant output power * OTP,OLP,OVP, LNO-OV, Brownout and VDD clamp for higher security * Fixed switch frequency 65kHz * Low start-up current * Cycle-by-cycle Current Limiting |
Flyback Converters, HV Start and build in OLP,UVLO,OCP, SCP, LEB. | 30.0V | 18.5V | 7.0V | 2uA | 0.97V | 85% | Internal Fixed | SOP-8 | |
| 19KHz | 65KHz | ||||||||||
| UC3837 | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters * Dynamic peak current limiting for constant output power * OTP,OLP,OVP and VDD clamp for higher security * Fixed switch frequency 65kHz * Low start-up current * Cycle-by-cycle Current Limiting |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start, OTP, BNO Etc. |
23.0V | 14.5V | 8.5V | 5uA | 0.65V | 75%(Typ.) | Internal Fixed | SOT-26 | |
| 22KHz | 65KHz | ||||||||||
| UC3848 | High
Performance Power-Saving Mode PWM Controllers * Soft Start * Over Temperature Protection * Overload Protection * Over Voltage Protection * Leading Edge Blanking * Cycle-by-Cycle Current Limiting |
Flyback
Converters, Hopping Technology Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc. |
30.0V | 14.2V | 8.2V | 22uA | 0.86V | 80% | Internal Fixed | DIP-8 SOP-8 | |
| 20KHz | 68KHz | ||||||||||
| UC3849* | Power-Saving Mode PWM Controllers | Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin, Frequency By RI Pin. |
36.0V | 16.5V | 9.7V | 4uA | 0.97V | 85% | Internal Fixed | DIP-8 SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3849B | LOW
COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * Programming OTP for higher security * Cycle-by-cycle Current Limiting * Under voltage lockout (UVLO) * Few external components required |
Flyback
Converters, Hopping Technology Frequency Burst→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc. |
36.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | Internal Fixed | DIP-8 SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3853A | CURRENT
MODE PWM CONTROLLER FOR FORWARD AND FLYBACK APPLICATIONS * Peak Current Mode Control * Adjustable Internal Ramp Compensation * Jittering Frequency ±6% of the Switching Frequency * Power-saving mode for high standby efficiency * Delayed Operation Upon Start−up via an Internal Fixed Timer |
Flyback
Converters, Hopping Technology build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc. |
29.0V | 10.0V | 9.0V | 5uA | 0.96V | 50% | Internal Fixed | SOP-8 | |
| - | 100KHz | ||||||||||
| UC3856 | Low
Cost Power-Saving Mode PWM Controller For Fly-Back Converters * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OTP,OLP,OVP and VDD clamp for higher security * High efficiency HV start * Cycle-by-cycle current limiting * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, HV Start and build in OLP,UVLO,OCP, SCP, LEB. |
35.0V | 19.0V | 7.0V | 2uA | 0.65V | 90% | Internal Fixed | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3863 | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters * Built-in synchronized slope compensation * OTP,OLP,OVP and VDD clamp for higher security * Programmable PWM Frequency * Cycle-by-cycle Current Limiting * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc. |
30.0V | 13.5V | 8.0V | 2.5uA | 0.95V | 85% | RI=100KΩ | DIP-8 SOP-8 SOT-26 | |
| 23KHz | 65KHz | ||||||||||
| UC3863A | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters * Built-in synchronized slope compensation * OTP,OLP,OVP and VDD clamp for higher security * Programmable PWM Frequency * Cycle-by-cycle Current Limiting * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc. |
36.0V | 18.0V | 7.0V | 2.0uA | 0.92V | 90% | RI=100KΩ | HSOP-8 SOP-8 SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3869A | HIGH
VOLTAGE GREEN MODE PWM CONTROLLER * High voltage startup * Power on soft start reducing MOSFET Vds stress * Efficiency and minimum standby power * Audio noise free operation * Fixed 65 kHz switching frequency |
Flyback
Converters, HV Start and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin |
36.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | Internal Fixed | DIP-8 SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3869H | HIGH
VOLTAGE GREEN MODE PWM CONTROLLER * High voltage startup * Power on soft start reducing MOSFET Vds stress * Efficiency and minimum standby power * Audio noise free operation * Fixed 100 kHz switching frequency |
Flyback
Converters, HV Start and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin |
36.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | Internal Fixed | DIP-8 SOP-8 | |
| 20KHz | 100KHz | ||||||||||
| UC3873 | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OLP, OVP and VDD clamp for higher security * Programming OTP for higher security * Cycle-by-cycle Current Limiting * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, OTP sense by RT pin, Fixed Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
30.0V | 13.8V | 8.2V | 2.5uA | 0.92V | 76%(TYP) | Internal Fixed | SOT-26 | |
| 22KHz | 65KHz | ||||||||||
| UC3873H | LOW
COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OTP and OVP( automatic recovery) * Programming OTP for higher security * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, OTP sense by RT pin, Fixed Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
36.0V | 18.0V | 7.0V | 2.0uA | 0.92V | 90% | Internal Fixed | SOT-26 | |
| 20KHz | 100KHz | ||||||||||
| UC3873A | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OLP, OVP and VDD clamp for higher security * Programming OTP for higher security * Cycle-by-cycle Current Limiting * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, OTP sense by RT pin, Fixed Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
36.0V | 18.0V | 7.0V | 2.0uA | 0.92V | 90% | Internal Fixed | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3873B | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OLP, OVP and VDD clamp for higher security * Programming OTP for higher security * Cycle-by-cycle Current Limiting * Few external components required |
Flyback
Converters, Hopping Technology & Frequency Burst→PFM→PWM, OTP sense by RT pin, Fixed Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
30.0V | 13.0V | 7.0V | 2.5uA | 0.95V | 78%(TYP) | Internal Fixed | SOT-26 | |
| 22KHz | 100KHz | ||||||||||
| UC3875A | LOW
COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS with latch
up * Dynamic peak current limiting for constant output power * Built-in synchronized slope FBensation * OTP,OLP,OVP and VDD clamp for higher security * Programmable PWM Frequency * Cycle-by-cycle Current Limiting * Few external FBonents required |
Flyback
Converters, HV Start and build in OLP,UVLO,OVP,LEB, Frequency By RI Pin. |
36.0V | 18.0V | 7.0V | 0.75mA (ST_Pin) |
0.92V | 90% | RI=100KΩ | DIP-8 SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3883 | HIGH
PERFORMANCE CURRENT MODE PWM CONTROLLER WITH PEAK LOAD * Power on Soft Start Reducing MOSFET VDS Stress * Frequency shuffling for EMI * Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design * Audio Noise Free Operation * Frequency Triple for peak load (180KHz) * Adjustable Overload Protection (OLP) delay time |
Flyback
Converters, build in OLP,UVLO,OVP,LEB, Soft Start Etc. |
36.0V | A:20V B:15.3V |
8.2V | 1.5uA | 0.88 | 85% | Internal Fixed | SOT-26 | |
| 20 | 65 | ||||||||||
| *Under Development | |||||||||||