| PartNumber | SC4910AITSTRT | SC4911IMSTRT | SC4910BITSTRT |
| Description | Switching Controllers ADV SCND SIDE CNTLR W/SYNCH RE | Switching Controllers BI/PRI SIDE PWM CNTRL W/LOW ST | Switching Controllers ADV SCND SIDE CNTRL W/SYNCH RE |
| Manufacturer | Semtech | Semtech | Semtech |
| Product Category | Switching Controllers | Switching Controllers | Switching Controllers |
| RoHS | Y | Y | Y |
| Topology | Isolated | Flyback | Isolated |
| Number of Outputs | 2 Output | 1 Output | 2 Output |
| Switching Frequency | 1 MHz | 500 kHz | 1 MHz |
| Input Voltage | 9 V to 18 V | 16 V | 9 V to 18 V |
| Output Voltage | 5 V | - | 3.3 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 125 C | + 125 C | + 125 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TSSOP-20 | MSOP-8 | TSSOP-20 |
| Packaging | Reel | Reel | Reel |
| Operating Temperature Range | - 40 C to + 125 C | - | - 40 C to + 125 C |
| Series | SC491 | SC491 | SC491 |
| Type | High Performance Secondary Side Controller with Synchronous Rectifier | - | High Performance Secondary Side Controller with Synchronous Rectifier |
| Brand | Semtech | Semtech | Semtech |
| Operating Supply Current | 10 mA | 3.4 mA | 10 mA |
| Product Type | Switching Controllers | Switching Controllers | Switching Controllers |
| Factory Pack Quantity | 2500 | 2500 | 2500 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Unit Weight | 0.006737 oz | 0.004938 oz | 0.006737 oz |
| Duty Cycle Max | - | 72 % | - |
| Isolation | - | Isolated, Non-Isolated | - |
| Product | - | PWM Controllers | - |
| Shutdown | - | No Shutdown | - |
| Fall Time | - | 10 ns | - |
| Operating Supply Voltage | - | 16 V | - |
| Rise Time | - | 25 ns | - |