| Part Number | UC3846J | UC3846Q | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | PMIC - Voltage Regulators - DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | 
|   |   | |
| Product Status | Active | Obsolete | 
| Output Type | Transistor Driver | Transistor Driver | 
| Function | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull | Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull | 
| Number of Outputs | 2 | 2 | 
| Output Phases | 1 | 1 | 
| Voltage - Supply (Vcc/Vdd) | 6.95V ~ 40V | 6.95V ~ 40V | 
| Frequency - Switching | 500kHz | 500kHz | 
| Duty Cycle (Max) | 50% | 50% | 
| Synchronous Rectifier | Yes | Yes | 
| Clock Sync | Yes | Yes | 
| Serial Interfaces | - | - | 
| Control Features | Current Limit, Enable, Frequency Control, Soft Start | Current Limit, Enable, Frequency Control, Soft Start | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Through Hole | Surface Mount | 
| Package / Case | 16-CDIP (0.300", 7.62mm) | 20-LCC (J-Lead) | 
| Supplier Device Package | 16-CDIP | 20-PLCC (9x9) |