Part Details for LT8641EUDC#TRPBF by Linear Technology
Results Overview of LT8641EUDC#TRPBF by Linear Technology
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LT8641EUDC#TRPBF Information
LT8641EUDC#TRPBF by Linear Technology is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Part Details for LT8641EUDC#TRPBF
LT8641EUDC#TRPBF CAD Models
LT8641EUDC#TRPBF Part Data Attributes
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LT8641EUDC#TRPBF
Linear Technology
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Datasheet
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LT8641EUDC#TRPBF
Linear Technology
LT8641 - 65V, 3.5A Synchronous Step-Down Silent Switcher with 2.5µA Quiescent Current; Package: QFN; Pins: 18; Temperature Range: -40°C to 85°C
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| Rohs Code | Yes | |
| Part Life Cycle Code | Transferred | |
| Ihs Manufacturer | LINEAR TECHNOLOGY CORP | |
| Part Package Code | QFN | |
| Package Description | 3 X 4 MM, LEAD FREE, PLASTIC, QFN-20/18 | |
| Pin Count | 18 | |
| Manufacturer Package Code | UDC | |
| Reach Compliance Code | compliant | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Control Mode | CURRENT-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 65 V | |
| Input Voltage-Min | 3 V | |
| Input Voltage-Nom | 6 V | |
| JESD-30 Code | R-PQCC-N18 | |
| JESD-609 Code | e3 | |
| Length | 4 mm | |
| Moisture Sensitivity Level | 1 | |
| Number of Functions | 1 | |
| Number of Terminals | 18 | |
| Operating Temperature-Max | 125 °C | |
| Operating Temperature-Min | -40 °C | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | HVQCCN | |
| Package Shape | RECTANGULAR | |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | |
| Peak Reflow Temperature (Cel) | 260 | |
| Seated Height-Max | 0.8 mm | |
| Surface Mount | YES | |
| Switcher Configuration | BUCK | |
| Switching Frequency-Max | 3000 kHz | |
| Temperature Grade | AUTOMOTIVE | |
| Terminal Finish | MATTE TIN | |
| Terminal Form | NO LEAD | |
| Terminal Pitch | 0.5 mm | |
| Terminal Position | QUAD | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Width | 3 mm |
LT8641EUDC#TRPBF Frequently Asked Questions (FAQ)
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The maximum input voltage that the LT8641EUDC can handle is 42V, but it's recommended to keep it below 36V for optimal performance and reliability.
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To minimize EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-current paths short and wide. Also, use a shielded inductor and orient it to minimize radiation.
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A low-ESR ceramic capacitor (X5R or X7R dielectric) with a voltage rating of at least 50V is recommended for the input capacitor. A 10uF to 22uF capacitor is a good starting point.
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Choose an inductor with a saturation current rating above the peak current, a low DCR, and a high SRF. A shielded inductor is recommended to minimize EMI. The inductor value can be calculated using the formula provided in the datasheet.
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The LT8641EUDC has a thermal derating of 2.5mW/°C above 25°C. This means that the maximum power dissipation decreases by 2.5mW for every degree above 25°C.