Microchip Technology
L'immagine può essere rappresentativa.
Vedi le specifiche per i dettagli del prodotto.
MCP73828-4.2VUATR
vedi dettagli Schede tecniche

MCP73828-4.2VUATR

Product Overview

Category

The MCP73828-4.2VUATR 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

  • Input voltage range: 3.75V to 6V
  • Charge current: Up to 1A
  • Programmable charge termination current
  • Preconditioning of deeply discharged cells
  • Automatic recharge
  • Temperature monitoring and protection
  • Small form factor package

Package

The MCP73828-4.2VUATR is available in a 10-pin, 2x3 mm DFN (Dual Flat No-Lead) package.

Essence

The essence of the MCP73828-4.2VUATR lies in its ability to efficiently and safely charge Li-Ion or Li-Po batteries with various features and protections.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

  • Input Voltage Range: 3.75V to 6V
  • Charge Current: Up to 1A
  • Charge Termination Current: Programmable
  • Preconditioning: Yes
  • Automatic Recharge: Yes
  • Temperature Monitoring: Yes
  • Package Type: 10-pin DFN
  • Package Dimensions: 2x3 mm

Detailed Pin Configuration

Pin Name | Description --- | --- VIN | Input voltage pin GND | Ground pin STAT | Status output pin PG | Power good output pin PROG | Charge termination current programming pin CE | Charge enable input pin TS | Temperature sense input pin BAT | Battery voltage sense input pin VSS | Negative terminal of the battery VDD | Positive terminal of the battery

Functional Features

  1. Programmable Charge Termination Current: The MCP73828-4.2VUATR allows users to set the charge termination current according to their specific requirements.

  2. Preconditioning: This feature enables the charger to safely charge deeply discharged batteries by applying a low current initially before ramping up to the full charge current.

  3. Automatic Recharge: After the charge cycle is completed, the MCP73828-4.2VUATR automatically initiates a recharge if the battery voltage drops below a certain threshold.

  4. Temperature Monitoring and Protection: The IC monitors the temperature during charging and provides protection against over-temperature conditions, ensuring safe operation.

Advantages and Disadvantages

Advantages

  • Wide input voltage range allows compatibility with various power sources.
  • Programmable charge termination current offers flexibility for different battery types.
  • Preconditioning feature ensures safe charging of deeply discharged batteries.
  • Automatic recharge functionality maintains battery health.
  • Temperature monitoring and protection enhance safety.

Disadvantages

  • Limited to single-cell Li-Ion or Li-Po battery charging applications.
  • Not suitable for multi-cell battery packs.

Working Principles

The MCP73828-4.2VUATR operates as a constant-current/constant-voltage (CC/CV) charger. It starts by delivering a constant current to the battery until the programmed charge termination current is reached. At this point, the charger switches to a constant voltage mode, maintaining a steady voltage across the battery terminals. Once the charge cycle is complete, the charger enters a standby state until the battery voltage drops below a specified threshold, triggering an automatic recharge.

Detailed Application Field Plans

The MCP73828-4.2VUATR finds application in various portable electronic devices, such as: - Smartphones - Tablets - Portable media players - Bluetooth headsets - Wearable devices

Detailed and Complete Alternative Models

  1. MCP73831-2ATI/OT: Similar to MCP73828-4.2VUATR but with a lower charge current capability.
  2. MCP73871-2CCI/ML: Offers higher charge current and additional features like USB On-The-Go (OTG) support.

These alternative models provide options for different charging requirements and system designs.

In conclusion, the MCP73828-4.2VUATR is a versatile battery charger IC designed for single-cell Li-Ion or Li-Po batteries. With its programmable charge termination current, temperature monitoring, and automatic recharge functionality, it offers efficient and safe charging for various portable electronic devices.

10 domande e risposte comuni relative all'applicazione di MCP73828-4.2VUATR nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of MCP73828-4.2VUATR:

  1. Q: What is the MCP73828-4.2VUATR? A: The MCP73828-4.2VUATR is a battery charger controller IC designed for single-cell lithium-ion or lithium-polymer batteries.

  2. Q: What is the input voltage range of the MCP73828-4.2VUATR? A: The input voltage range is typically between 4.5V and 6V.

  3. Q: What is the maximum charging current supported by the MCP73828-4.2VUATR? A: The maximum charging current is programmable and can be set up to 1A.

  4. Q: How does the MCP73828-4.2VUATR control the charging process? A: The MCP73828-4.2VUATR uses constant-current/constant-voltage (CC/CV) charging algorithm to regulate the charging process.

  5. Q: Can the MCP73828-4.2VUATR charge multiple batteries in parallel? A: No, the MCP73828-4.2VUATR is designed for charging a single-cell battery only.

  6. Q: Does the MCP73828-4.2VUATR have built-in thermal regulation? A: Yes, the MCP73828-4.2VUATR includes thermal regulation to prevent overheating during charging.

  7. Q: Can I use the MCP73828-4.2VUATR with other battery chemistries like NiMH or lead-acid? A: No, the MCP73828-4.2VUATR is specifically designed for lithium-ion and lithium-polymer batteries.

  8. Q: How can I program the charging current of the MCP73828-4.2VUATR? A: The charging current can be programmed by selecting the appropriate resistor value connected to the PROG pin.

  9. Q: Does the MCP73828-4.2VUATR provide any indication of the charging status? A: Yes, the MCP73828-4.2VUATR has an open-drain CHRG pin that can be used to indicate the charging status.

  10. Q: What are the typical applications of the MCP73828-4.2VUATR? A: The MCP73828-4.2VUATR is commonly used in portable devices, power banks, and other battery-powered applications where single-cell lithium-ion or lithium-polymer batteries need to be charged safely and efficiently.

Please note that these answers are general and may vary depending on the specific requirements and implementation of the MCP73828-4.2VUATR in a technical solution.