MCP73838-FCI/UN

Product Overview

Category

The MCP73838-FCI/UN 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 MCP73838-FCI/UN is a highly integrated, linear charge management controller.
• It provides a complete charging solution for portable devices with limited space and power constraints.
• This IC offers various safety features such as thermal regulation, charge termination, and reverse battery protection.

Package

The MCP73838-FCI/UN is available in a small form factor package, making it suitable for compact electronic devices.

Essence

The essence of this product lies in its ability to efficiently and safely charge lithium-based batteries, ensuring optimal performance and longevity.

Packaging/Quantity

The MCP73838-FCI/UN is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage: 4.5V to 6.0V
• Charge Current: Up to 1A
• Preconditioning Current: 10% of programmed current
• Charge Termination: Programmable
• Battery Regulation Voltage: 4.2V
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP73838-FCI/UN has the following pin configuration:

1. VDD - Power supply input
2. STAT - Status output pin
3. PG - Power good output pin
4. PROG - Programming input pin
5. TS - Temperature sense input pin
6. BAT - Battery voltage sense input pin
7. GND - Ground

Functional Features

• Constant Current (CC) and Constant Voltage (CV) charging modes
• Programmable charge termination current
• Thermal regulation for temperature protection
• Reverse battery protection
• Power good output for system status indication

Advantages and Disadvantages

Advantages

• Highly integrated solution for battery charging applications
• Small form factor package suitable for space-constrained devices
• Offers various safety features for reliable charging
• Programmable charge termination current allows flexibility in design

Disadvantages

• Limited to single-cell lithium-based batteries
• Input voltage range may not be suitable for all applications

Working Principles

The MCP73838-FCI/UN operates by regulating the charging current and voltage to the connected lithium-based battery. It starts with a constant current mode until the battery voltage reaches the programmed regulation voltage. Then, it switches to a constant voltage mode to complete the charging process. The IC continuously monitors the battery temperature and adjusts the charging parameters accordingly to ensure safe operation.

Detailed Application Field Plans

The MCP73838-FCI/UN is widely used in various portable electronic devices, including: - Smartphones and tablets - Portable media players - Bluetooth headsets - Wearable devices - GPS navigation systems

Detailed and Complete Alternative Models

1. MCP73871-2CCI/ML - Similar functionality with additional dual-cell charging capability.
2. MCP73831T-2ACI/OT - Lower cost alternative with reduced charging current capability.
3. MCP73844-420I/MS - Higher voltage variant suitable for specific battery chemistries.

These alternative models offer similar features and can be considered based on specific application requirements.

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