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| Part Number | UC3877N | UC3879N | UC3847N | UC3867N |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Obsolete | Active |
| Output Type | - | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | - | Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up/Step-Down |
| Output Configuration | - | Positive | Positive | Positive |
| Topology | - | Half-Bridge | Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull | Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | - | 4 | 2 | 2 |
| Output Phases | - | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | - | 9V ~ 20V | 6.95V ~ 40V | 7V ~ 22V |
| Frequency - Switching | - | Up to 300kHz | 500kHz | 50kHz ~ 500kHz |
| Duty Cycle (Max) | - | 50% | 50% | 100% |
| Synchronous Rectifier | - | Yes | Yes | No |
| Clock Sync | - | Yes | Yes | No |
| Serial Interfaces | - | - | - | - |
| Control Features | - | Frequency Control, Ramp, Soft Start | Current Limit, Enable, Frequency Control, Soft Start | Soft Start |
| Operating Temperature | - | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | - | Through Hole | Through Hole | Through Hole |
| Package / Case | - | 20-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | - | 20-PDIP | 16-PDIP | 16-PDIP |
