MCP39F521-E/MQ Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
MCP39F521-E/MQ is a single-phase energy measurement IC from Microchip with 10-bit resolution in a compact 28-pin QFN package. It integrates power, energy, and RMS current/voltage measurement functions in one channel. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- MCP39F521-E/MQ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.5900(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP39F521-E/MQ?
- Single-chip single-phase energy metering with 10-bit ADC resolution reduces BOM cost versus discrete measurement solutions
- Integrated voltage supervisor and reset function in a 28-pin QFN-28 package saves board space in smart meter and power monitor designs
- UART interface with calibration support enables fast factory calibration and firmware-driven energy accumulation without external DSP
What is MCP39F521-E/MQ used for?
The MCP39F521-E/MQ is designed for single-phase energy metering in smart plugs, residential power monitors, and embedded power management modules. It measures RMS voltage, RMS current, active power, and accumulated energy in a single channel, making it ideal for IoT-connected appliances and home automation devices. The 28-pin QFN form factor and integrated functions also suit space-constrained industrial power monitoring equipment.
What are the specifications of MCP39F521-E/MQ?
| Manufacturer Package Code | QFN-28 |
| Factory Lead Time | 5Weeks |
| YTEOL | 14 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | S-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC28,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | TS 16949 |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP39F521-E/MQ datasheet?
MCP39F521-E/MQ Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP39F521-E/MQ?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What measurement functions does the MCP39F521-E/MQ integrate and at what ADC resolution?
The MCP39F521-E/MQ integrates RMS voltage, RMS current, active power, reactive power, and energy accumulation measurement in a single channel at 10-bit ADC resolution. This level of integration eliminates the need for multiple discrete components in smart metering designs and supports single-phase AC line measurements up to standard 240 V residential levels.
How does the 28-pin QFN package of the MCP39F521-E/MQ benefit space-constrained smart plug designs?
The QFN-28 package measures approximately 5 mm x 5 mm, enabling integration of full energy metering capability in compact smart plug and in-wall outlet form factors where PCB area is limited to under 20 cm². The exposed thermal pad also improves heat dissipation during continuous current monitoring, extending device reliability at sustained load currents.
In what scenarios would a designer choose the MCP39F521-E/MQ over a dedicated MCU-based energy measurement approach?
A designer would choose the MCP39F521-E/MQ when system cost, BOM complexity, and firmware development time must be minimized. The IC handles all analog front-end signal conditioning and energy calculation internally, offloading the host MCU and reducing time-to-market. It is particularly effective in cost-sensitive appliances where the host processor lacks the 10-bit ADC accuracy or the processing bandwidth for real-time power calculation.
What is the factory lead time for the MCP39F521-E/MQ and how should procurement teams plan supply chain around it?
The MCP39F521-E/MQ has a factory lead time of approximately 5 weeks. Procurement teams should plan orders at least 6–8 weeks ahead of production start to buffer for shipping and incoming inspection. Maintaining a safety stock of 4–6 weeks of consumption is advisable for high-volume smart meter or appliance production runs to avoid line stoppages.
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About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.5900 | $3.59 |
| 25+ | $3.2800 | $82.00 |
| 50+ | $3.1300 | $156.50 |
| 100+ | $2.7200 | $272.00 |
| 1000+ | $2.6200 | $2620.00 |
| 5000+ | $2.5900 | $12950.00 |
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