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| PartNumber | LT1681ESW#PBF | LT1681ESW#TRPBF | LT1681ESW |
| Description | Switching Voltage Regulators Primary Sync. Forward Sw Controller | Switching Voltage Regulators Primary Sync. Forward Sw Controller | Switching Voltage Regulators LT1681 - Dual Transistor Synchronous Forward Controlle |
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Linear Technology |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators | PMIC - Power Supply Controllers, Monitors |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SO-20 | SO-20 | - |
| Output Voltage | 1.25 V to 64.8 V | 1.25 V to 64.8 V | - |
| Output Current | 20 A | 20 A | - |
| Number of Outputs | 1 Output | 1 Output | - |
| Input Voltage MAX | 72 V | 72 V | - |
| Topology | Flyback | Flyback | - |
| Input Voltage MIN | 9 V | 9 V | - |
| Switching Frequency | 350 kHz | 350 kHz | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Series | LT1681 | LT1681 | - |
| Packaging | Tube | Reel | Tube Alternate Packaging |
| Input Voltage | 9 V to 72 V | 9 V to 72 V | - |
| Operating Temperature Range | - 40 C to + 85 C | - 40 C to + 85 C | - |
| Type | Dual Transistor Synchronous Forward Controller | Dual Transistor Synchronous Forward Controller | - |
| Brand | Analog Devices / Linear Technology | Analog Devices / Linear Technology | - |
| Shutdown | Shutdown | Shutdown | - |
| Operating Supply Current | 17 mA | 17 mA | - |
| Product Type | Switching Voltage Regulators | Switching Voltage Regulators | - |
| Factory Pack Quantity | 38 | 1000 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Supply Voltage Min | 9 V | 9 V | - |
| Package Case | - | - | 20-SOIC (0.295", 7.50mm Width) |
| Operating Temperature | - | - | -40°C ~ 85°C |
| Mounting Type | - | - | Surface Mount |
| Applications | - | - | Synchronous Forward Controller |
| Voltage Supply | - | - | 9 V ~ 18 V |
| Supplier Device Package | - | - | 20-SOIC |
| Voltage Input | - | - | 72V |
| Current Supply | - | - | 17mA |