MCP73831T-2ACI/OT
Battery Chargers
Technical Specifications
| Type | Description |
|---|---|
| Working Voltage V | 4.875 V |
| Interface | - |
| Iq A | 5.3e-05 |
| End-Off Voltage | - |
| Number of Cells | 1 |
| Battery Temperature Detection | Not supported |
| 0V Battery Charge | - |
| Type of Battery | Lithium Battery |
| Type | Description |
|---|---|
| The Chip Type | Charging IC |
| Balance Current | - |
| Charge Current - Max | 550mA |
| Charging Saturation Voltage | 4.2V |
| Operating Temp | -40°C ~ +85°C |
| Features | Constant current charging;Constant voltage charging;Trickle charging;Automatic recharge;Charge termination;Programmable charging current;Reverse current blocking;Under-voltage lockout |
| Package / Case | SOT-23-5 |
Product Introduction
The MCP73831/2 devices are highly advanced linear charge management controllers for use in space-limited, cost-sensitive applications. The MCP73831/2 are available in an 8-Lead, 2 mm×3 mm DFN package or a 5-Lead, SOT-23 package. Along with their small physical size, the low number of external components required make the MCP73831/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73831/2 adhere to all the specifications governing the USB power bus.
The MCP73831/2 employ a constant-current/constant-voltage charge algorithm with selectable preconditioning and charge termination. The constant voltage regulation is fixed with four available options: 4.20V, 4.35V, 4.40V or 4.50V, to accommodate new, emerging battery charging requirements. The constant current value is set with one external resistor. The MCP73831/2 devices limit the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability.
Several options are available for the preconditioning threshold, preconditioning current value, charge termination value and automatic recharge threshold. The preconditioning value and charge termination value are set as a ratio or percentage of the programmed constant current value. Preconditioning can be disabled.
The MCP73831/2 devices are fully specified over the ambient temperature range of -40°C to +85°C.
Features
- Linear Charge Management Controller:
- Integrated Pass Transistor - Integrated Current Sense - Reverse Discharge Protection
- High Accuracy Preset Voltage Regulation: ±0.75%
- Four Voltage Regulation Options: 4.20V, 4.35V, 4.40V, 4.50V
- Programmable Charge Current: 15 mA to 500 mA
- Selectable Preconditioning: 10%, 20%, 40%, or Disable
- Selectable End-of-Charge Control: 5%, 7.5%, 10%, or 20%
- Charge Status Output - Tri-State Output - MCP73831 - Open-Drain Output - MCP73832
- Automatic Power-Down
- Thermal Regulation
- Temperature Range: -40°C to +85°C
- Packaging:
- 8-Lead, 2 mm×3 mm DFN
- 5-Lead, SOT-23
Applications
- - Lithium-Ion/Lithium-Polymer Battery Chargers - Personal Data Assistants - Cellular Telephones - Digital Cameras - MP3 Players - Bluetooth Headsets - USB Chargers
Datasheet
Alternative Parts
Common MCP73831T-2ACI/OT alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Frequently Asked Questions
What Reliability Features and Standards Does the MCP73831T-2ACI/OT Offer?
The MCP73831T-2ACI/OT incorporates thermal regulation, reverse discharge protection, and a constant-current/constant-voltage charging algorithm to enhance charging safety and reliability. This Microchip battery charger IC is also available as a RoHS-compliant electronic component, making it suitable for modern consumer and industrial designs.
Is the MCP73831T-2ACI/OT Compatible With Other Lithium Battery Charging ICs?
The MCP73831T-2ACI/OT is designed for charging single-cell Li-Ion and Li-Polymer batteries and may be considered alongside similar charger ICs in the MCP73831/MCP73832 family. When selecting an equivalent part, engineers should compare the datasheet specifications, package type, charge current settings, charge termination options, and system requirements to ensure compatibility.
What Applications Is the MCP73831T-2ACI/OT Commonly Used In?
This battery charger electronic component is widely used in portable and rechargeable devices requiring efficient single-cell lithium battery management. Common applications include USB-powered chargers, Bluetooth devices, wearable electronics, digital cameras, handheld instruments, and IoT products.
Sourcing Information
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