| Part Number | UC3879N | UC3879J | 
|---|---|---|
| Manufacturer | Texas Instruments | Unitrode | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
| 
                             | 
                                                        
                             | 
                                                    |
| Product Status | Active | Active | 
| Output Type | Transistor Driver | - | 
| Function | Step-Up/Step-Down | - | 
| Output Configuration | Positive | - | 
| Topology | Half-Bridge | - | 
| Number of Outputs | 4 | - | 
| Output Phases | 1 | - | 
| Voltage - Supply (Vcc/Vdd) | 9V ~ 20V | - | 
| Frequency - Switching | Up to 300kHz | - | 
| Duty Cycle (Max) | 50% | - | 
| Synchronous Rectifier | Yes | - | 
| Clock Sync | Yes | - | 
| Serial Interfaces | - | - | 
| Control Features | Frequency Control, Ramp, Soft Start | - | 
| Operating Temperature | 0°C ~ 70°C (TA) | - | 
| Mounting Type | Through Hole | - | 
| Package / Case | 20-DIP (0.300", 7.62mm) | - | 
| Supplier Device Package | 20-PDIP | - |