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| PartNumber | UC3843BD1 | UC3843BD | UC3843BD1-LF |
| Description | Switching Controllers 0.5mA Current Mode | Switching Controllers 52kHz 1A Current PWM | |
| Manufacturer | STMicroelectronics | ON Semiconductor | - |
| Product Category | Switching Controllers | Switching Controllers | - |
| RoHS | Y | N | - |
| Topology | Boost, Flyback, Forward | Boost, Flyback, Forward | - |
| Number of Outputs | 1 Output | 1 Output | - |
| Switching Frequency | 500 kHz | 500 kHz | - |
| Duty Cycle Max | 100 % | 96 % | - |
| Output Voltage | 4.90 V to 5.10 V | 4.9 V to 5.1 V | - |
| Output Current | 1000 mA | 1000 mA | - |
| Minimum Operating Temperature | - 40 C | 0 C | - |
| Maximum Operating Temperature | + 150 C | + 70 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SO-8 | SOIC-14 | - |
| Packaging | Tube | Tube | - |
| Series | UC3843B | - | - |
| Type | Current Mode PWM Controllers | Current Mode PWM Controllers | - |
| Brand | STMicroelectronics | ON Semiconductor | - |
| Fall Time | 50 ns | 50 ns | - |
| Operating Supply Voltage | 30 V | 30 V | - |
| Product Type | Switching Controllers | Switching Controllers | - |
| Rise Time | 50 ns | 50 ns | - |
| Factory Pack Quantity | 2000 | 55 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Unit Weight | 0.017870 oz | 0.011923 oz | - |