| Secondary Side Regulation Green Mode PWM Controller | |||||||||||
| Part No. | Features | Function | VCC | UVLO (Typ.) | IST | CS(V) | Duty Cycle | FOSC | Package | ||
| Max. | VTH(ST) | VOPR | Typ. | Typ. | Max. | Green | Typ. | ||||
| UC3800 | 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 | 13.0V | 7.0V | 2uA | 0.95V | 85% | VFB=3.5V | SOP-8 | |
| 22KHz | 62KHz | ||||||||||
| UC3830G* | Power Saving PWM with frequency modulation for EMI reducing | Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, Fixed Frequency, 300mA Driving Capability and build in OVP,OLP,UVLO, OCP, SCP, LEB, OTP, Soft Start Etc. |
30.0V | 16.0V | 10.0V | 5uA | 0.85V | 75% | Internal Fixed | DIP-8 SOT-26 | |
| 20KHz | 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) | VFB=3.5V | SOT-26 | |
| 22KHz | 65KHz | ||||||||||
| UC3833L | ADVANCED GREEN-MODE PWM CONTROLLER WITH
FREQUENCY TRIPLE FOR PEAK POWER * Frequency triple for peak power (195kHz) * Adjustable soft start time * Adjustable OLP (over load protection) delay timer(automatic recovery) * LEB (Leading-Edge Blanking) on CS Pin * Current mode control with Green Mode Operation out pin clamping |
Flyback Converters,and build in OVP,OLP sense by CT pin,UVLO,OCP, SCP, LEB, Soft Start, OTP Etc. | 32.0V | 20.0V | 8.0V | 2uA | 0.92V | 90%(Typ) | - | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3837L | Low Cost Power-Saving Mode PWM Controller for
Flyback Converters with latched shut down * Dynamic peak current limiting for constant output power * OLP with automatic recovery * OTP and OVP * VDD clamp for higher security * 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. | 30.0V | 20.0V | 8.0V | 2uA | 0.92V | 90%(Typ) | VFB=3.5V | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3839* | Power-Saving Mode PWM Controller with BNO And OTP Protection | Flyback Converters, Hopping Technology &
Frequency Burst→PFM→PWM, BNO,OTP Protection Pin, Adj OVP, OCP Pin and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start, Etc. |
27.0V | 16.0V | 7.5V | 9uA | 0.85V | 80% | Internal Fixed | DIP-8 SOT-26 | |
| 21.5KHz | 65KHz | ||||||||||
| UB3846* | Power-Saving Mode PWM Controller | Flyback Converters, Hopping Technology &
Frequency Burst→PFM→PWM, OVP,OLP,OTP,UVLO,OCP, SCP, LEB, Etc. |
25.0V | 16.3V | 11.7V | 5uA | 1.0V | 80% | RI=95KΩ | SOP-8 SOT-26 | |
| 15KHz | 70KHz | ||||||||||
| UB3846B* | Power-Saving Mode PWM Controller | Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin. | 25.0V | 16.3V | 11.7V | 5uA | 1.0V | 80% | RI=95KΩ | SOP-8 | |
| 15KHz | 70KHz | ||||||||||
| 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% | VFB=4.0V | 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 | 10.5V | 4uA | 0.86V | 85% | RI=100KΩ | DIP-8 SOP-8 | |
| 22KHz | 65KHz | ||||||||||
| UC3849B | LOW
COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * UTC proprietary frequency hopping technology for Improved EMI performance. * Power-saving mode for high light-load and standby efficiency * Soft Start * 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 * Fixed switch frequency 65kHz * Gate output voltage clamped at 15V * Low start-up current * 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 | 16.5V | 8.0V | 2uA | 0.92V | 90% | VFB=3.5V | DIP-8 SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3852* | PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit Protection | Flyback Converters, Hopping Technology & Frequency Burst→PWM, HV Start and build in OLP,UVLO,OCP, SCP, LEB, . | 16.0V | 12.8V | 7.8V | 20uA* | 0.92V | 87% | Internal Fixed | DIP-8 SOP-8 | |
| 42/65/103 KHz | |||||||||||
| 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. | 30.0V | 13.0V | 6.5V | 20uA | 0.65V | 75% | RI=100KΩ | SOT-26 | |
| 22KHz | 62KHz | ||||||||||
| UC3856L** | - | - | - | - | - | - | - | - | - | SOT-26 | |
| - | - | ||||||||||
| 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 | 14.0V | 7.5V | 5uA | 0.65V | 75% | RI=100KΩ | DIP-8 SOP-8 SOT-26 | |
| 22KHz | 65KHz | ||||||||||
| UC3863A | * UTC proprietary frequency hopping technology
for Improved EMI performance. * Power-saving mode for high light-load and standby efficiency * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OLP with automatic recovery * OTP and OVP with automatic recovery * VDD clamp for higher security * Programmable PWM Frequency * Low start-up current * Cycle-by-cycle Current Limiting * Under voltage lockout (UVLO) * 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. | 35.0V | 18.0V | 7.0V | 2uA | 0.65V | 90% | RI=100KΩ | HSOP-8 SOP-8 SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3863L | Low Cost Power-Saving Mode PWM Controller for
Flyback Converters with latched shut down * OLP with automatic recovery * OTP and OVP with latch shut down * Programmable PWM Frequency * Low start-up current * 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. | 32.0V | 20.0V | 8.0V | 2uA | 0.92V | 90% | RI=100KΩ | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3868* | Power-Saving Mode PWM Controllers | Flyback
Converters, 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 | 10.5V | 4.0uA | 0.86V | 85% | RI=100KΩ | DIP-8 SOP-8 | |
| 22KHz | 65KHz | ||||||||||
| UC3869 | 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 65KHZ switching frequency * UVLO,OCP,OLP,OTP,OVP |
Flyback Converters, HV Start and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin | 35.0V | 19.0V | 7.0V | 2uA | 0.92V | 90% | VFB=3.0V | DIP-8 SOP-8 | |
| 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 * UVLO,OCP,OLP,OTP,OVP |
Flyback Converters, HV Start and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin | 30.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | VFB=3.0V | DIP-8 SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| 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 | 13.0V | 8.5V | 5uA | 0.75V | 75% | Internal Fixed | SOT-26 | |
| 22KHz | 65KHz | ||||||||||
| 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 with automatic recovery * OTP and OVP( automatic recovery) * Programming OTP for higher security * Cycle-by-cycle current limiting * Few external components required |
Flyback Converters,OTP sense by RT pin, Fixed
Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
35.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | VFB=3.5V | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3873L | Low Cost Power-Saving Mode PWM Controller for
Flyback Converters with latch shut down * Dynamic peak current limiting for constant output power * Built-in synchronized slope compensation * OLP with automatic recovery * OTP and OVP( UC3873L with latch shut down) * Programming OTP for higher security * Cycle-by-cycle current limiting * Few external components required |
Flyback Converters, OTP sense by RT pin, Fixed
Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
35.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | VFB=3.5V | SOT-26 | |
| 20KHz | 65KHz | ||||||||||
| UC3873B | Low Cost Power-Saving Mode PWM Controller for
Flyback Converters * Built-in synchronized slope compensation * OLP,OVP and VDD clamp for higher security * -500/+500mA gate driver * 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% | Internal Fixed | SOT-26 | |
| 22KHz | 65KHz | ||||||||||
| UC3873HL | Low
Cost Power-Saving Mode PWM Controller for Flyback Converters with latch shut
down * Built-in synchronized slope compensation * OLP with automatic recovery * OTP and OVP( UC3873HL with latch shut down) * Programming OTP for higher security * Fixed switch frequency 130kHz * Cycle-by-cycle current limiting * Few external components required |
Flyback
Converters, OTP sense by RT pin, Fixed Frequency and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc. |
35.0V | 18.0V | 7.0V | 2uA | 0.92V | 90% | VFB=3.5V | SOT-26 | |
| 20KHz | 130KHz | ||||||||||
| UC3874A* | - | - | - | - | - | - | - | - | - | SOP-8 | |
| - | - | ||||||||||
| UC3875 | LOW
COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS * Dynamic peak current limiting for constant output power * 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, HV Start and build in OLP,UVLO,OVP,LEB, Frequency By RI Pin. | 30.0V | 20.0V | 8.0V | 250uA (Max) |
0.92V | 90% | RI=100KΩ | SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| 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. | 35.0V | 18.0V | 7.0V | 750uA (Max) |
0.92V | 90% | RI=100KΩ | SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3875B* | - | - | - | - | - | - | - | - | - | SOP-8 | |
| - | - | ||||||||||
| UC3875L | LOW COST POWER-SAVING MODE PWM CONTROLLER FOR
FLYBACK CONVERTERS with latch up * Built-in synchronized slope compensation * OLP with automatic recovery * OTP and OVP with latch up * VDD clamp for higher security * Programmable frequency * Cycle-by-cycle Current Limiting * Few external components required |
Flyback Converters, HV Start and build in OLP,UVLO,OVP,LEB, Frequency By RI Pin. | 32.0V | 20.0V | 8.0V | 250uA (Max) |
0.92V | 90% | RI=100KΩ | SOP-8 | |
| 20KHz | 65KHz | ||||||||||
| UC3876A* | - | - | - | - | - | - | - | - | - | - | |
| - | - | ||||||||||
| UC3893* | LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS | Flyback Converters, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin | 30.0V | 13.0V | 8.0V | 2.5uA | 0.95V | 85% | VFB=3.5V | SOP-8 | |
| 22KHz | 65KHz | ||||||||||
| *: Under Development | |||||||||||