IC REG BUCK ADJ 5A 18QFN
| Part Number | LT8640IUDC#MPBF |
| Date Code | 2140 |
| Quantity Available | 22456 pcs |
| Manufacturer | Linear Technology/Analog Devices |
| Lead Time | Ship within 24 hours |
| QTY | 1000 |
| Datasheet | LT8640.pdf |
| Minimum Quantity | More than 50pcs |
| Distributor | SingSun |
| RoHS Status | Lead free / RoHS Compliant |
| Ship From | Hong Kong |
| Shipment Way | EMS/SF/DHL/TNT/UPS/FedEx |
| Country of Assembly | MALAYSIA |
| Country of Diffusion | IRELAND |
| Lot Number | VX99592.78 |
| MSL | 3 |
| Packaging | Reel |
| Base Product Number | LT8640 |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.4V |
| Voltage - Input (Max) | 42V |
| Voltage - Output (Min/Fixed) | 0.97V |
| Voltage - Output (Max) | 42V |
| Current - Output | 5A |
| Frequency - Switching | 210kHz ~ 2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 20-WFQFN, 18 Leads, Exposed Pad |
| Supplier Device Package | 20-QFN (3x4) |
The LT8640 step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. An ultralow 2.5µA quiescent current—with the output in full regulation—enables applications requiring highest efficiency at very small load currents.
The LT8640 allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch on-time of 30ns. The SYNC/MODE pin selects between Burst Mode operation, spread spectrum mode, synchronization to an external clock, and either pulse-skipping (LT8640).
