Microchip Technology MCP73831T-2DCI/OT
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | SC-74A, SOT-753 |
| Interface | - |
| Mfr | Microchip Technology |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Number of Cells | 1 |
| Battery Chemistry | Lithium Ion/Polymer |
| Charge Current - Max | 500mA |
| Supplier Device Package | SOT-23-5 |
| Fault Protection | Over Voltage |
| Programmable Features | Current |
| Current - Charging | Constant - Programmable |
| Battery Pack Voltage | 4.2V |
| Voltage - Supply (Max) | 6V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | MCP73831 |
| REACH Status | REACH Unaffected |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
Microchip charge controller - MCP73831T-2DCI/OT Li-Ion battery charger
The MCP73831T-2DCI/OT from Microchip Technology is a compact, fully integrated linear charge management controller designed for single-cell Li-Ion/Li-Polymer batteries. It provides precise constant-current/constant-voltage (CC/CV) charging with programmable charge current up to 500mA, making it ideal for portable and space-constrained applications. The device integrates key protection features, including thermal regulation, reverse discharge protection, and automatic charge termination, ensuring safe and efficient battery charging. With a small SOT-23-5 package, it is well-suited for wearables, IoT devices, and low-power embedded systems.
Key Features
● Single-Cell Li-Ion/Li-Polymer Charger: Supports 4.2V (±1%) regulated output.
● Programmable Charge Current (Up to 500mA): Adjustable via external resistor.
● Integrated Thermal Regulation: Prevents overheating during charging.
● Automatic Charge Termination: Stops charging when battery reaches full capacity.
● Reverse Discharge Protection: Prevents battery drain when power is off.
● Low Power Consumption: Minimal standby current for energy efficiency.
● Compact SOT-23-5 Package: Ideal for space-constrained designs.
500mA linear charger Applications
The MCP73831T-2DCI/OT is widely used in portable electronics, wireless earbuds, smartwatches, medical devices, and small IoT sensors. Its small footprint and reliable charging performance make it a preferred choice for battery-powered applications requiring efficient power management.
Advantages Over Alternatives
Compared to basic charging ICs, the MCP73831T-2DCI/OT offers higher integration, better thermal management, and reverse discharge protection, reducing the need for additional external components. Its programmable current setting provides flexibility, while its compact size makes it ideal for miniaturized designs.
Alternative Models
● TP4056 (Xysemi): Similar linear charger with 1A max current but lacks thermal regulation.
● BQ24040 (Texas Instruments): Higher current (800mA) with power-path management, but larger package.
● LTC4054 (Analog Devices): Ultra-compact charger with lower standby current, but fixed 450mA output.
● MAX1555 (Maxim Integrated): Supports USB and adapter input, but higher cost.
