LT8640AJUDCM#PBF
Active42V, 5A/8A PEAK SYNCHRONOUS STEP-DOWN SILENT SWITCHER WITH 2.5ΜA QUIESCENT CURRENT
LT8640AJUDCM#PBF
Active42V, 5A/8A PEAK SYNCHRONOUS STEP-DOWN SILENT SWITCHER WITH 2.5ΜA QUIESCENT CURRENT
Description
General part information
LT8640A Series
The LT8640A 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 LT8640A 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 forced continuous mode.ApplicationsAutomotive and Industrial SuppliesGeneral Purpose Step-Down
Technical Specifications
Parameters and characteristics for this part
| Specification | LT8640AJUDCM#PBF |
|---|---|
| Current - Output | 5 A |
| Frequency - Switching (Max) | 3 MHz |
| Frequency - Switching (Min) | 200 kHz |
| Function | Step-Down |
| Mounting Type | Wettable Flank, Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 150 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package Leads | 18 Leads |
| Package Length | 3 mm |
| Package Name | 20-QFN, 20-WFQFN Exposed Pad |
| Package Width | 4 mm |
| Synchronous Rectifier | Yes |
| Topology | Buck |
| Voltage - Input (Max) | 42 V |
| Voltage - Input (Min) | 2.9 V |
| Voltage - Output (Max) | 41.58 V |
| Voltage - Output (Min/Fixed) | 0.97 V |
Pricing
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