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| PartNumber | FSQ321 | FSQ321/Q321 | FSQ321L |
| Description | AC/DC Converters SMPS Power Switch | Power Switch ICs - Power Distribution SMPS Power Switch | |
| Manufacturer | ON Semiconductor | - | Fairchild Semiconductor |
| Product Category | AC/DC Converters | - | PMIC - AC DC Converters, Offline Switchers |
| RoHS | Y | - | - |
| Mounting Style | Through Hole | - | SMD/SMT |
| Package / Case | DIP-8 | - | - |
| Minimum Operating Temperature | - 25 C | - | - |
| Maximum Operating Temperature | + 85 C | - | + 85 C |
| Output Current | 530 mA | - | 530 mA |
| Series | FSQ321 | - | FPS |
| Packaging | Tube | - | Tube |
| Number of Outputs | 1 Output | - | 1 Output |
| Product | Power Switches | - | Power Switches |
| Brand | ON Semiconductor / Fairchild | - | - |
| Product Type | AC/DC Converters | - | - |
| Factory Pack Quantity | 3000 | - | - |
| Subcategory | PMIC - Power Management ICs | - | - |
| Unit Weight | 0.030018 oz | - | 0.025045 oz |
| Package Case | - | - | SOP-8 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Mounting Type | - | - | Surface Mount |
| Supplier Device Package | - | - | 8-LSOP |
| Power Watts | - | - | 12W |
| Output Isolation | - | - | Isolated |
| Internal Switch s | - | - | Yes |
| Voltage Breakdown | - | - | 650V |
| Topology | - | - | Flyback |
| Voltage Start Up | - | - | 12V |
| Voltage Supply Vcc Vdd | - | - | 8 V ~ 20 V |
| Duty Cycle | - | - | - |
| Frequency Switching | - | - | 55kHz ~ 67kHz |
| Fault Protection | - | - | Current Limiting, Over Load, Over Temperature, Over Voltage |
| Control Features | - | - | Sync |