LT8640EUDC-1#PBF
DC-DC Switching Synchronous Buck Regulator, Adjustable, 2.9 to 42 V in, 0.97V/5A out, QFN-EP-18
| Manufacturer | ANALOG DEVICES |
|---|---|
| Manufacturer Part No | LT8640EUDC-1#PBFCopy |
| Manufacturer Standard Lead Time | 14 weeks |
| Newark Part No. | 51AK9104 |
| Your Part Number | |
| Technical Datasheet |
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| Quantity | Price |
|---|---|
| 1+ | $14.800 |
| 10+ | $11.680 |
| 25+ | $11.150 |
| 50+ | $10.630 |
| 100+ | $10.100 |
| 250+ | $9.770 |
Product Information
| Manufacturer | ANALOG DEVICES |
|---|---|
| Manufacturer Part No | LT8640EUDC-1#PBFCopy |
| Manufacturer Standard Lead Time | 14 weeks |
| Newark Part No. | 51AK9104 |
| Technical Datasheet | |
| Output Type | Adjustable |
| Regulator Output Type | Adjustable |
| No. of Outputs | 1Outputs |
| Topology | Synchronous Buck (Step Down) |
| Input Voltage Min | 2.9V |
| Input Voltage Max | 42V |
| Output Current | 5A |
| Max Output Current | 5A |
| IC Case / Package | QFN-EP |
| No. of Pins | 18Pins |
| IC Mounting | Surface Mount |
| Output Voltage - Nom | - |
| Output Voltage Min | 970mV |
| Output Voltage Max | - |
| Switching Frequency Typ | 2MHz |
| Efficiency | 96% |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 125°C |
| Product Range | - |
| Qualification | - |
| MSL | MSL 1 - Unlimited |
| SVHC | No SVHC (04-Feb-2026) |
| DC / DC Converter IC Case | QFN-EP |
| Automotive Qualification Standard | - |
| Switching Frequency | 2MHz |
Product Overview
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 LT8640-1 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 forced continuous mode (LT8640-1).
- Up to 96% efficiency at 1MHz, 12VIN to 5VOUT
- Up to 95% efficiency at 2MHz, 12VIN to 5VOUT
- Wide input voltage range from 3.4V to 42V
- 5A maximum continuous output, 7A peak transient output
- Ultralow quiescent current Burst Mode® operation
- Low dropout under all conditions is 100mV at 1A, 18-lead plastic QFN package
- Safely tolerates inductor saturation in overload
- Adjustable and synchronizable: 200KHz to 3MHz
- Peak current mode operation
- Output soft-start and tracking
Notes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
Technical Specifications
| Output Type | Adjustable |
|---|---|
| No. of Outputs | 1Outputs |
| Input Voltage Min | 2.9V |
| Output Current | 5A |
| IC Case / Package | QFN-EP |
| IC Mounting | Surface Mount |
| Output Voltage Min | 970mV |
| Switching Frequency Typ | 2MHz |
| Operating Temperature Min | -40°C |
| Product Range | - |
| MSL | MSL 1 - Unlimited |
| DC / DC Converter IC Case | QFN-EP |
| Switching Frequency | 2MHz |
| Regulator Output Type | Adjustable |
|---|---|
| Topology | Synchronous Buck (Step Down) |
| Input Voltage Max | 42V |
| Max Output Current | 5A |
| No. of Pins | 18Pins |
| Output Voltage - Nom | - |
| Output Voltage Max | - |
| Efficiency | 96% |
| Operating Temperature Max | 125°C |
| Qualification | - |
| SVHC | No SVHC (04-Feb-2026) |
| Automotive Qualification Standard | - |
Technical Docs (1)
Legislation and Environmental
| US ECCN: | EAR99 |
|---|---|
| EU ECCN: | Unknown |
| RoHS Compliant: | Yes RoHS |
| RoHS Phthalates Compliant: | Yes RoHS |
| SVHC: | No SVHC (04-Feb-2026) |
| Download Product Compliance Certificate | Product Compliance Certificate |