LT8640EUDCF-1#PBF
ActiveCONV DC-DC 3.4V TO 42V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.97V TO 41.58V 5A 18-PIN QFN EP TUBE
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LT8640EUDCF-1#PBF
ActiveCONV DC-DC 3.4V TO 42V SYNCHRONOUS STEP DOWN SINGLE-OUT 0.97V TO 41.58V 5A 18-PIN QFN EP TUBE
Technical Specifications
Parameters and characteristics for this part
| Specification | LT8640EUDCF-1#PBF |
|---|---|
| Current - Output | 5 A |
| Frequency - Switching [Max] | 2 MHz |
| Frequency - Switching [Min] | 210 kHz |
| Function | Step-Down |
| Mounting Type | Wettable Flank, Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 20-WFQFN, Exposed Pad, 18 Leads |
| Supplier Device Package | 20-QFN (3x4) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 42 V |
| Voltage - Input (Min) [Min] | 3.4 V |
| Voltage - Output (Max) [Max] | 42 V |
| Voltage - Output (Min/Fixed) [Min] | 0.97 V |
LT8640LT8640-1 Series
42V, 5A Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current
| Part | Number of Outputs | Topology | Synchronous Rectifier | Supplier Device Package | Current - Output | Voltage - Input (Max) [Max] | Function | Output Type | Voltage - Input (Min) [Min] | Voltage - Output (Max) [Max] | Frequency - Switching [Max] | Frequency - Switching [Min] | Voltage - Output (Min/Fixed) [Min] | Mounting Type | Output Configuration | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Voltage - Output (Min/Fixed) | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount | Positive | 150 °C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount Wettable Flank | Positive | 125 ¯C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount Wettable Flank | Positive | 125 ¯C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount | Positive | 125 ¯C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount Wettable Flank | Positive | 150 °C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount | Positive | 150 °C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 24-LQFN (4x4) | 6 A | 42 V | Step-Down | Adjustable | 3 V | 42 V | 3 MHz | 200 kHz | 0.97 V | Surface Mount | Positive | 125 ¯C | -40 °C | 24-TFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount | Positive | 125 ¯C | -40 °C | 18 Leads 20-WFQFN Exposed Pad | |||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | 2.9 V | 3 MHz | 200 kHz | Surface Mount Wettable Flank | Positive | 150 °C | -40 °C | 20-WFQFN Exposed Pad 18 Leads | 3.3 V | 1.81 mOhm | ||||
Analog Devices | 1 | Buck | 20-QFN (3x4) | 5 A | 42 V | Step-Down | Adjustable | 3.4 V | 42 V | 2 MHz | 210 kHz | 0.97 V | Surface Mount Wettable Flank | Positive | 125 ¯C | -40 °C | 18 Leads 20-WFQFN Exposed Pad |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 11.59 | |
| 10 | $ 8.22 | |||
| 25 | $ 7.35 | |||
| 100 | $ 6.41 | |||
Description
General part information
LT8640LT8640-1 Series
The LT8640/LT8640-1 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/LT8640-1 allows high VINto low VOUTconversion 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) or forced continuous mode (LT8640-1).PackageSYNC/MODE ≠ 0VCCOMPH-GRADECLKOUTINTERNAL CAPSLT8640QFNPulse-SkippingInternalYesNoNoLT8640-1QFNFCMInternalYesNoNoLT8640SLQFNFCMInternalNoYesYesLT8643SLQFNFCMExternalNoYesYesLT8640S-2LQFNFCMInternalYesYesNoLT8643S-2LQFNFCMExternalYesYesNoApplicationsAutomotive and Industrial SuppliesGeneral Purpose Step-DownGSM Power Supplies
Documents
Technical documentation and resources