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| Part Number | UC2578N | UC2572N | UC2573N |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Unitrode |
| Product Status | Obsolete | Obsolete | Active |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Up/Step-Down | Step-Down |
| Output Configuration | Positive | Negative | Positive |
| Topology | Buck | Flyback | Buck |
| Number of Outputs | 1 | 1 | 1 |
| Output Phases | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 14V ~ 72V | 4.75V ~ 30V | 4.75V ~ 30V |
| Frequency - Switching | 110kHz | 100kHz | 100kHz |
| Duty Cycle (Max) | 90% | 92% | 92% |
| Synchronous Rectifier | No | No | No |
| Clock Sync | No | No | No |
| Serial Interfaces | - | - | - |
| Control Features | Current Limit, Soft Start | Current Limit, Ramp | Current Limit, Ramp |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP | 8-PDIP | 8-PDIP |
