MCP73871T-1CCI/ML

Product Overview

Category

The MCP73871T-1CCI/ML belongs to the category of battery charger ICs.

Use

This product is primarily used for charging single-cell lithium-ion (Li-Ion), lithium-polymer (Li-Po), and lithium iron phosphate (LiFePO4) batteries.

Characteristics

• The MCP73871T-1CCI/ML is a highly integrated solution for battery charging applications.
• It offers a compact size and low external component count, making it suitable for space-constrained designs.
• The device supports various charging profiles, including constant current (CC) and constant voltage (CV) modes.
• It incorporates multiple safety features such as thermal regulation, charge termination, and reverse battery protection.

Package

The MCP73871T-1CCI/ML is available in a small 10-pin DFN (Dual Flat No-Lead) package.

Essence

The essence of this product lies in its ability to efficiently and safely charge lithium-ion batteries while providing flexibility in charging profiles.

Packaging/Quantity

The MCP73871T-1CCI/ML is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 6.0V
• Charging Current Range: Up to 1.5A
• Programmable Charge Termination Current
• Programmable Preconditioning Current
• Thermal Regulation for Optimal Charging Performance
• Battery Temperature Monitoring
• Reverse Battery Protection
• Status Indication Outputs
• Integrated Pass Transistor and Current Sense

Detailed Pin Configuration

1. VBAT - Battery Voltage Input
2. PROG - Programming Pin for Charge Termination Current
3. STAT - Status Output Pin
4. TS - Battery Temperature Sense Input
5. PG - Power Good Output Pin
6. CE - Charge Enable Input
7. GND - Ground
8. VSS - Negative Supply Voltage
9. VDD - Positive Supply Voltage
10. VOUT - Regulated Output Voltage

Functional Features

• Constant Current (CC) and Constant Voltage (CV) Charging Modes
• Programmable Charge Termination Current for Different Battery Types
• Preconditioning Mode for Deeply Discharged Batteries
• Thermal Regulation to Prevent Overheating
• Reverse Battery Protection to Avoid Damage
• Status Outputs for Charging Indication
• Integrated Pass Transistor and Current Sense for Efficiency

Advantages and Disadvantages

Advantages

• Compact size and low external component count
• Supports multiple charging profiles
• Incorporates safety features for reliable charging
• Efficient thermal regulation for optimal performance
• Reverse battery protection prevents damage

Disadvantages

• Limited to single-cell lithium-ion batteries
• Requires programming for charge termination current

Working Principles

The MCP73871T-1CCI/ML operates by regulating the charging current and voltage to the connected lithium-ion battery. It starts with a constant current mode to rapidly charge the battery until a predefined voltage is reached. Then, it switches to a constant voltage mode to maintain the battery voltage while gradually reducing the charging current. The device continuously monitors the battery temperature and adjusts the charging parameters accordingly to prevent overheating. It also provides status outputs to indicate the charging process.

Detailed Application Field Plans

The MCP73871T-1CCI/ML finds applications in various portable electronic devices that utilize single-cell lithium-ion batteries. Some common application fields include: - Smartphones and tablets - Portable media players - Wireless headsets - GPS navigation systems - Portable medical devices - Handheld gaming consoles

Detailed and Complete Alternative Models

• MCP73831T-2ACI/OT: Similar functionality with a lower charging current capability.
• MCP73861T-1CCI/ML: Higher charging current capability with similar features.
• MCP73881T-2DCI/OT: Supports dual-cell lithium-ion battery charging.

These alternative models provide options based on specific requirements and charging current needs.

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