MCP87055T-U/LC Microchip MOSFET (N-Channel) (Other) In Stock
Microchip MCP87055T-U/LC is an N-channel power MOSFET rated at 25 V and 60 A with an ultra-low 7 mΩ (max) drain-source on-resistance and 162 mJ avalanche energy rating in an 8-pin DFN (PDFN-8) package. Optimized for high-current synchronous buck converters and load switches. From $1.10 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- MCP87055T-U/LC Datasheet PDF
- Category
- MOSFET (N-Channel)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 7 mΩ maximum drain-source on-resistance at 60 A enables sub-milliwatt conduction losses in high-current synchronous rectifier and load switch applications up to 25 V
- 162 mJ avalanche energy rating (Eas) ensures robust handling of voltage spikes during hard switching in inductive load and motor drive circuits without requiring external clamp diodes
- Compact 8-pin PDFN package with drain-connected thermal pad provides excellent 25 V / 60 A current density in tight board layouts for DC-DC converters and battery protection modules
Applications
The MCP87055T-U/LC is engineered for synchronous buck converter low-side switches, battery protection FETs, and high-current load switches in 12 V to 24 V DC systems requiring 60 A continuous drain current with minimal conduction losses. Its 7 mΩ on-resistance dramatically reduces heat generation in server power delivery networks, multi-cell Li-Ion battery packs, and automotive point-of-load converters compared to conventional MOSFETs at the same current rating. The PDFN-8 package with exposed drain pad also enables efficient thermal spreading to PCB copper planes without clip-on heatsinks.
Specifications
| Manufacturer Package Code | PDFN-8 |
| YTEOL | 0 |
| Avalanche Energy Rating (Eas) | 162mJ |
| Case Connection | DRAIN |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 25V |
| Drain Current-Max (ID) | 60A |
| Drain-source On Resistance-Max | 0.007Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| Feedback Cap-Max (Crss) | 114pF |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation Ambient-Max | 1.8W |
| Power Dissipation-Max (Abs) | 1.8W |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.29.00.95 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What conduction loss does MCP87055T-U/LC produce at 60 A and how does 7 mΩ on-resistance compare to competing devices?
At 60 A continuous drain current, the MCP87055T-U/LC dissipates a maximum of 25.2 W in conduction loss (P = I² × RDS(on) = 60² × 0.007 Ω). Compared to typical 25 V N-channel MOSFETs with 10 mΩ to 15 mΩ on-resistance, the 7 mΩ rating reduces conduction losses by 30% to 50%, directly improving converter efficiency by 0.5 to 1.5 percentage points in synchronous buck designs operating at 10 A to 60 A.
How does MCP87055T-U/LC perform in a 12 V synchronous buck converter for server CPU power delivery?
In a 12 V to 1 V synchronous buck converter for server CPU power delivery at 60 A output, the MCP87055T-U/LC as the low-side synchronous FET maintains 7 mΩ on-resistance during the freewheeling conduction phase, which can last 80% to 95% of each switching cycle at low duty cycles. This low RDS(on) is critical for maintaining above 90% conversion efficiency, while the 162 mJ avalanche rating provides protection against voltage transients from PCB parasitic inductance during high di/dt switching events.
What is the thermal management approach for MCP87055T-U/LC in a high-current load switch design without a heatsink?
The MCP87055T-U/LC uses an 8-pin PDFN package where the drain paddle is exposed on the bottom of the IC and thermally coupled directly to the PCB copper plane. At 60 A with 7 mΩ on-resistance, the 25.2 W maximum power dissipation can be managed by soldering the exposed pad to a 25 cm² copper pour with 2 oz copper weight, achieving a PCB thermal resistance below 3°C/W and keeping junction temperature below 125°C in 25°C ambient conditions.
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