MCP73831-2DCI/MC Microchip Integrated Circuit (Small Outline No-lead) In Stock
Microchip MCP73831-2DCI/MC is a single-cell Li-Ion/Li-Polymer linear battery charger IC delivering up to 500 mA charge current with 4.2V regulation in a compact 8-pin DFN package featuring thermal shutdown at 150°C. Available in stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP73831-2DCI/MC Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5500(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-cell Li-Ion/Li-Polymer linear charger regulating to a precise 4.2V termination voltage with up to 500 mA programmable charge current via a single external resistor
- Integrated thermal regulation reduces charge current automatically when die temperature reaches 150°C, protecting the device and battery without external circuitry
- Compact 8-pin DFN with exposed pad enables space-efficient PCB integration in portable devices, with a footprint under 16 mm²
Applications
The MCP73831-2DCI/MC is ideal for USB-powered portable electronics such as wireless headsets, Bluetooth beacons, and handheld medical instruments that use single-cell Li-Ion or Li-Polymer batteries. Its programmable charge current via an external resistor allows designers to set values from 15 mA to 500 mA to match battery capacity and thermal constraints without firmware. The tiny DFN-8 footprint and integrated protection make it a one-chip charging solution for wearable devices and IoT nodes requiring minimal board space.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | DFN-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | Thermal Shutdown:150C |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.11,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 1.5mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 3.75V |
| Supply Voltage-Nom (Vsup) | 5.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.20V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP73831-2DCI/MC:
suggested
suggested
suggested
suggested
Frequently Asked Questions
How is the charge current of the MCP73831-2DCI/MC programmed and what resistor value gives 500 mA?
The MCP73831-2DCI/MC sets charge current via a single external resistor (RPROG) connected from the PROG pin to ground. Using the formula IPROG = 1000V / RPROG, a 2 kΩ resistor programs the maximum 500 mA charge current. For lower capacity batteries, a 66.7 kΩ resistor sets a safe 15 mA trickle current, giving designers a wide 15 mA to 500 mA programmable range with no firmware required.
At what temperature does the MCP73831-2DCI/MC activate thermal shutdown and how does it protect the battery?
The MCP73831-2DCI/MC activates its thermal regulation loop when the die temperature reaches approximately 150°C. Rather than abruptly cutting off charging, it linearly reduces charge current to keep die temperature at 150°C, allowing charging to continue at a safe reduced rate. This prevents overheating in compact enclosures where airflow is limited, protecting both the IC and the connected Li-Ion cell from thermal damage.
Which battery chemistries and cell configurations are compatible with the MCP73831-2DCI/MC?
The MCP73831-2DCI/MC is designed specifically for single-cell Li-Ion and Li-Polymer batteries, regulating to a fixed 4.2V ±0.75% termination voltage. It is not suitable for multi-cell series strings or NiMH/NiCd chemistries that require different termination algorithms. The -2 suffix in MCP73831-2DCI/MC denotes the 4.2V preset, while other MCP73831 variants offer 4.35V or 4.40V regulation for specific high-energy Li-Polymer cells.
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