MCP73862-I/SL

Product Overview

• Category: Battery Charger IC
• Use: Charging Lithium-Ion (Li-Ion) batteries
• Characteristics: High accuracy, small package size, low power consumption
• Package: SOIC-8
• Essence: Efficient and reliable battery charging solution
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 6.0V
• Charge Current Range: 15mA to 500mA
• Preconditioning Current: 10% of programmed current
• Charge Termination: Programmable timer or voltage-based
• Battery Temperature Monitoring: Yes
• Thermal Regulation: Yes
• Reverse Discharge Protection: Yes
• Under Voltage Lockout: Yes
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MCP73862-I/SL has a total of 8 pins arranged as follows:

1. VDD - Power supply input
2. STAT - Status output pin
3. PROG - Programming input pin
4. TS - Temperature sense input pin
5. VSS - Ground
6. BAT - Battery connection
7. PG - Power good output pin
8. CE - Charge enable input pin

Functional Features

• Constant current/constant voltage charging algorithm
• Automatic charge termination based on timer or voltage threshold
• Programmable charge current through external resistor
• Temperature monitoring for safe charging
• Power good indicator for charge status monitoring
• Reverse discharge protection prevents battery drain
• Under voltage lockout for battery protection

Advantages and Disadvantages

Advantages: - High accuracy charging algorithm ensures optimal battery performance - Small package size allows for space-constrained applications - Low power consumption minimizes energy waste - Programmable charge current provides flexibility for different battery capacities

Disadvantages: - Limited input voltage range may not be suitable for all applications - Requires external components for complete charging circuit implementation

Working Principles

The MCP73862-I/SL is a battery charger IC designed specifically for Lithium-Ion batteries. It utilizes a constant current/constant voltage charging algorithm to ensure efficient and safe charging. The charge current can be programmed through an external resistor, allowing flexibility for different battery capacities.

The IC monitors the battery temperature to prevent overheating during charging. It also features reverse discharge protection, which prevents the battery from draining back into the charger when the input power is removed. An under voltage lockout function ensures that the battery is protected from excessive discharge.

The MCP73862-I/SL terminates the charging process either based on a programmable timer or a voltage threshold. This ensures that the battery is not overcharged, which could lead to reduced battery life or safety hazards.

Detailed Application Field Plans

The MCP73862-I/SL is commonly used in various portable electronic devices such as smartphones, tablets, digital cameras, and portable media players. It is also suitable for applications where space is limited, thanks to its small package size.

Due to its high accuracy and reliability, this battery charger IC is widely used in medical devices, industrial equipment, and automotive applications. Its low power consumption makes it suitable for energy-efficient designs.

Detailed and Complete Alternative Models

1. MCP73861-I/SL: Similar to MCP73862-I/SL but with a lower charge current range (15mA to 200mA).
2. MCP73863-I/SL: Similar to MCP73862-I/SL but with a higher charge current range (15mA to 1000mA).
3. MCP73864-I/SL: Similar to MCP73862-I/SL but with additional features like thermal regulation and battery temperature monitoring.

These alternative models provide options for different charging requirements and can be considered based on specific application needs.

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