MCP73837-FJI/MF

Product Overview

Category

The MCP73837-FJI/MF belongs to the category of battery charger ICs.

Use

This product is primarily used for charging single-cell lithium-ion (Li-Ion) or lithium-polymer (Li-Po) batteries.

Characteristics

• The MCP73837-FJI/MF is a highly integrated and compact solution for battery charging applications.
• It offers a wide input voltage range, making it suitable for various power sources.
• This IC provides multiple charging modes, including constant current and constant voltage.
• It incorporates safety features such as thermal regulation and overvoltage protection.
• The MCP73837-FJI/MF supports fast charging, enabling quick recharge times for batteries.

Package

The MCP73837-FJI/MF is available in a small form factor package, allowing for space-efficient designs.

Essence

The essence of this product lies in its ability to efficiently and safely charge Li-Ion or Li-Po batteries, providing a reliable power source for portable electronic devices.

Packaging/Quantity

The MCP73837-FJI/MF is typically sold in tape and reel packaging. The exact quantity per reel may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 6.0V
• Charging Current Range: Up to 1A
• Charge Termination Voltage: Programmable
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT-23-5

Detailed Pin Configuration

The MCP73837-FJI/MF has the following pin configuration:

1. VBAT: Battery Voltage Input
2. PROG: Charge Termination Voltage Programming Pin
3. STAT: Status Output Pin
4. GND: Ground
5. VDD: Supply Voltage Input

Functional Features

• Constant Current and Constant Voltage Charging Modes
• Programmable Charge Termination Voltage
• Thermal Regulation for Temperature Control
• Overvoltage Protection
• Charge Status Indication through the STAT Pin

Advantages and Disadvantages

Advantages

• Compact and integrated solution
• Wide input voltage range
• Multiple charging modes for flexibility
• Safety features for protection
• Fast charging capability

Disadvantages

• Limited to single-cell battery charging
• Requires external components for complete charging circuit

Working Principles

The MCP73837-FJI/MF operates by regulating the charging current and voltage supplied to the connected Li-Ion or Li-Po battery. It starts with a constant current mode to rapidly charge the battery until it reaches a predefined voltage level. Then, it switches to a constant voltage mode to maintain the battery at that voltage while reducing the charging current. The charge termination voltage can be programmed to suit specific battery requirements.

Detailed Application Field Plans

The MCP73837-FJI/MF finds applications in various portable electronic devices, including: - Smartphones and tablets - Portable media players - Wearable devices - Bluetooth headsets - GPS navigation systems - Portable gaming consoles

Detailed and Complete Alternative Models

1. MCP73831: Similar functionality but with lower charging current capability.
2. MCP73833: Higher charging current capability compared to MCP73837-FJI/MF.
3. MCP73871: Supports dual-cell battery charging.

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

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