MCP73838T-FJI/UN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger Controller
• Characteristics: High-performance, compact size, low power consumption
• Package: SOT-23-5
• Essence: Regulates and controls the charging process of batteries
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 4.35V to 6V
• Charge Current Range: 15mA to 500mA
• Preconditioning Current: 10% of programmed current
• Programmable Charge Termination Timer
• Automatic Recharge
• Thermal Regulation and Protection
• Reverse Discharge Protection
• Under Voltage Lockout (UVLO)

Detailed Pin Configuration

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

Functional Features

• Constant Current/Constant Voltage (CC/CV) Charging Algorithm
• Programmable Charge Current
• Charge Termination Timer
• Automatic Recharge
• Temperature Monitoring and Regulation
• Reverse Discharge Protection
• Under Voltage Lockout (UVLO)

Advantages

• High-performance charging algorithm ensures efficient and safe charging of batteries
• Compact size allows for easy integration into various applications
• Low power consumption minimizes energy waste
• Programmable charge current provides flexibility for different battery types and capacities
• Automatic recharge feature ensures continuous availability of charged batteries

Disadvantages

• Limited input voltage range may not be suitable for all battery types
• SOT-23-5 package may require additional PCB space compared to smaller packages

Working Principles

The MCP73838T-FJI/UN is a battery charger controller IC that utilizes a constant current/constant voltage (CC/CV) charging algorithm. It regulates the charging process by controlling the charge current and monitoring the battery voltage. The IC starts with a constant current phase until the battery voltage reaches a predetermined threshold, after which it switches to a constant voltage phase. This ensures efficient and safe charging of batteries while preventing overcharging.

Detailed Application Field Plans

The MCP73838T-FJI/UN is widely used in various portable electronic devices such as smartphones, tablets, digital cameras, and portable gaming consoles. It is also commonly employed in battery-powered medical devices, wireless communication devices, and industrial equipment. Its compact size, high-performance charging algorithm, and low power consumption make it suitable for applications where space and energy efficiency are crucial.

Detailed and Complete Alternative Models

• MCP73831T-2ACI/OT: Similar functionality, different package (SOT-23-6)
• MCP73871-2CCI/ML: Higher charge current range, different package (QFN-10)
• MCP73861-I/ML: Lower charge current range, different package (QFN-10)
• MCP73832T-2DCI/OT: Similar functionality, different package (DFN-8)

Note: These alternative models offer similar features and functionality but may have differences in package type, charge current range, or other specifications.