MCP73831T-4ADI/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
Microchip MCP73831T-4ADI/OT is a single-cell Li-Ion/Li-Polymer linear battery charger IC in a 5-pin SOT-23 package with a 4.4 V regulated output and adjustable charge current. Supports up to 500 mA charge current for compact portable devices. From $0.50 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP73831T-4ADI/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2036(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP73831T-4ADI/OT?
- 4.4 V regulated charge termination voltage optimized for high-energy-density lithium polymer cells in compact wearables
- Programmable charge current up to 500 mA via a single external resistor simplifying design for different battery capacities
- Single-cell Li-Ion/Li-Polymer linear charger with preconditioning, constant-current, and constant-voltage charge phases
- 5-pin SOT-23 package enabling the smallest possible charger footprint for space-constrained portable and wearable PCBs
- RoHS-compliant (JESD-609 e3) Pb-free construction suitable for consumer electronics and medical wearable devices
What is MCP73831T-4ADI/OT used for?
The MCP73831T-4ADI/OT is the charging IC of choice for single-cell Li-Polymer batteries in Bluetooth earbuds, fitness trackers, and handheld IoT devices, where its 4.4 V termination voltage matches high-capacity LiPo cells and its 500 mA maximum charge current minimizes charge time. It is also used in USB-powered gadgets and embedded development boards that run from a LiPo cell and recharge via a 5 V USB source. Its tiny SOT-23-5 footprint and single-resistor current programming make it a drop-in solution for rapid prototyping and production designs alike.
What are the specifications of MCP73831T-4ADI/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 1.5mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 3.75V |
| Supply Voltage-Nom (Vsup) | 5.4V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.4V |
| Package | SOT23 (5-Pin) |
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 |
Where can I find the MCP73831T-4ADI/OT datasheet?
MCP73831T-4ADI/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP73831T-4ADI/OT?
Compatible alternatives and drop-in replacements for MCP73831T-4ADI/OT:
suggested
suggested
Frequently Asked Questions
What regulated output voltage does the MCP73831T-4ADI/OT use for charge termination and which battery chemistry does it target?
The MCP73831T-4ADI/OT terminates charge at a regulated 4.4 V, which is the standard full-charge voltage for high-energy-density lithium polymer cells, making it suitable for single-cell LiPo batteries commonly found in wearables, earbuds, and compact IoT modules.
How is the charge current programmed on the MCP73831T-4ADI/OT and what is the maximum current it supports?
The charge current is set by a single external resistor connected to the PROG pin; the maximum programmable charge current is 500 mA, allowing designers to match the charge rate to battery capacity — for example, a 500 mAh cell at a 1C rate — without additional components.
What charge algorithm does the MCP73831T-4ADI/OT implement and how does it protect deeply discharged cells?
The MCP73831T-4ADI/OT implements a 3-stage algorithm: a preconditioning phase at reduced current for cells below approximately 3 V, followed by a constant-current phase at the programmed rate, and finally a constant-voltage phase at 4.4 V until charge terminates, protecting deeply discharged cells from thermal stress.
In which form factor and at what input voltage does the MCP73831T-4ADI/OT operate for USB-powered charging applications?
The MCP73831T-4ADI/OT comes in a 5-pin SOT-23 package and operates with an input voltage from a standard 5 V USB source, making it compatible with USB bus-powered designs. Its linear topology keeps the layout simple, requiring only a few bypass capacitors and one resistor.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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+ | $0.7600 | $0.76 |
| 100+ | $0.5600 | $56.00 |
| 250+ | $0.2105 | $52.63 |
| 500+ | $0.2070 | $103.50 |
| 1000+ | $0.2036 | $203.60 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit