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| Part Number | UC3844BN | UC3844BNG | UC3845BN | UC3844N | UC3844BVN | UC3842BN | UC3843BN | UC3844AN | UC3844BD |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | onsemi | STMicroelectronics | Texas Instruments | onsemi | STMicroelectronics | STMicroelectronics | Texas Instruments | onsemi |
| Product Status | Active | Active | Active | Active | Obsolete | Active | Active | Active | Obsolete |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable |
| Topology | Boost, Flyback | Boost, Flyback | Boost, Flyback | Boost, Buck, Buck-Boost, Flyback, Forward | Boost, Flyback | Boost, Flyback | Boost, Flyback | Boost, Buck, Flyback, Forward | Boost, Flyback |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Phases | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 10V ~ 30V | 10V ~ 36V | 7.6V ~ 30V | 12V ~ 28V | 10V ~ 36V | 10V ~ 30V | 7.6V ~ 30V | 10V ~ 30V | 10V ~ 36V |
| Frequency - Switching | Up to 500kHz | Up to 500kHz | Up to 500kHz | Up to 500kHz | Up to 500kHz | Up to 500kHz | Up to 500kHz | Up to 500kHz | Up to 500kHz |
| Duty Cycle (Max) | 48% | 48% | 48% | 48% | 48% | 96% | 96% | 48% | 48% |
| Synchronous Rectifier | No | No | No | No | No | No | No | No | No |
| Clock Sync | No | No | No | No | No | No | No | No | No |
| Serial Interfaces | - | - | - | - | - | - | - | - | - |
| Control Features | Frequency Control | Frequency Control | Frequency Control | Frequency Control | Frequency Control | Frequency Control | Frequency Control | Frequency Control | Frequency Control |
| Operating Temperature | 0°C ~ 70°C (TJ) | 0°C ~ 70°C (TA) | -40°C ~ 150°C (TJ) | 0°C ~ 70°C (TA) | -40°C ~ 105°C (TA) | 0°C ~ 70°C (TJ) | 0°C ~ 70°C (TJ) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-Mini DIP | 8-PDIP | 8-Mini DIP | 8-PDIP | 8-PDIP | 8-Mini DIP | 8-Mini DIP | 8-PDIP | 14-SOIC |
