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