| Part Number | UC3845NG4 | UC3846NG4 | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
|   |   | |
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | 
| Output Type | Transistor Driver | Transistor Driver | 
| Function | Step-Up, Step-Down, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | 
| Output Configuration | Positive, Isolation Capable | Positive | 
| Topology | Boost, Buck, Buck-Boost, Flyback, Forward | Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull | 
| Number of Outputs | 1 | 2 | 
| Output Phases | 1 | 1 | 
| Voltage - Supply (Vcc/Vdd) | 12V ~ 28V | 6.95V ~ 40V | 
| Frequency - Switching | Up to 500kHz | 500kHz | 
| Duty Cycle (Max) | 48% | 50% | 
| Synchronous Rectifier | No | Yes | 
| Clock Sync | No | Yes | 
| Serial Interfaces | - | - | 
| Control Features | Frequency Control | Current Limit, Enable, Frequency Control, Soft Start | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°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 |