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| Part Number | UC2844J | UC2844P | UC2854J | UC2844N | UC2846J | UC2842J | UC2843J | UC2844D |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Unitrode | Unitrode | Texas Instruments | onsemi |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Obsolete |
| Output Type | Transistor Driver | Transistor Driver | - | Transistor Driver | - | - | Transistor Driver | Transistor Driver |
| Function | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | - | Step-Up, Step-Down, Step-Up/Step-Down | - | - | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive, Isolation Capable | Positive, Isolation Capable | - | Positive, Isolation Capable | - | - | Positive, Isolation Capable | Positive, Isolation Capable |
| Topology | Boost, Buck, Flyback, Forward | Boost, Buck, Flyback, Forward | - | Boost, Buck, Flyback, Forward | - | - | Boost, Buck, Buck-Boost, Flyback, Forward | Boost, Buck, Flyback, Forward |
| Number of Outputs | 1 | 1 | - | 1 | - | - | 1 | 1 |
| Output Phases | 1 | 1 | - | 1 | - | - | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 12V ~ 28V | 12V ~ 28V | - | 12V ~ 28V | - | - | 12V ~ 28V | 12V ~ 28V |
| Frequency - Switching | Up to 500kHz | Up to 500kHz | - | Up to 500kHz | - | - | Up to 500kHz | Up to 500kHz |
| Duty Cycle (Max) | 48% | 48% | - | 48% | - | - | 97% | 48% |
| Synchronous Rectifier | No | No | - | No | - | - | No | No |
| Clock Sync | No | No | - | No | - | - | No | No |
| Serial Interfaces | - | - | - | - | - | - | - | - |
| Control Features | Frequency Control | Frequency Control | - | Frequency Control | - | - | Frequency Control | Frequency Control |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - | -40°C ~ 85°C (TA) | - | - | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Through Hole | - | Through Hole | - | - | Through Hole | Surface Mount |
| Package / Case | 8-CDIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | - | 8-DIP (0.300", 7.62mm) | - | - | 8-CDIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-CDIP | 8-PDIP | - | 8-PDIP | - | - | 8-CDIP | 14-SOIC |
