BQ24064DRCT

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger
• Characteristics:
  • Highly integrated single-cell Li-Ion and Li-Pol battery charger
  • Supports USB input and various battery capacities
  • Provides accurate charge termination and conditioning for optimal battery life
• Package: VSON (Very Small Outline No-Lead) package
• Essence: Efficient and reliable battery charging solution
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charge Voltage Range: 3.5V to 4.44V
• Charge Current Range: 100mA to 1.5A
• Pre-Charge Threshold: 2.9V
• Safety Timer: 8 hours
• Thermal Regulation: Yes
• Battery Temperature Monitoring: Yes
• Status Outputs: Power Good, Charging, Charge Complete
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BQ24064DRCT has the following pin configuration:

| Pin Name | Description | |----------|-------------| | VIN | Input voltage from USB or AC adapter | | GND | Ground reference | | STAT | Status output indicating charging status | | PG | Power good output indicating valid input voltage | | CE | Charge enable input | | TS | Battery temperature sense input | | BAT | Battery connection | | ISET | Charge current setting resistor connection |

Functional Features

• Integrated power FETs for efficient charging
• Automatic power source selection between USB and AC adapter
• Programmable charge current through external resistor
• Soft-start feature to limit inrush current
• Reverse blocking protection
• Overvoltage protection
• Short-circuit protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - Highly integrated solution reduces external component count - Wide input voltage range allows versatile power source options - Accurate charge termination enhances battery life - Comprehensive protection features ensure safe charging

Disadvantages: - Limited to single-cell Li-Ion and Li-Pol batteries - Not suitable for multi-cell battery charging applications

Working Principles

The BQ24064DRCT is designed to efficiently charge single-cell Li-Ion and Li-Pol batteries. It automatically selects the power source between USB and AC adapter based on availability. The charge current can be programmed using an external resistor, allowing flexibility for different battery capacities. The charger employs a constant current/constant voltage charging profile with accurate charge termination to prevent overcharging and maximize battery life. Various protection mechanisms are implemented to safeguard against reverse blocking, overvoltage, short-circuit, and thermal issues.

Detailed Application Field Plans

The BQ24064DRCT is widely used in portable electronic devices that require single-cell Li-Ion or Li-Pol battery charging. Some common application fields include: - Smartphones and tablets - Portable media players - Bluetooth headsets - Wearable devices - GPS navigation systems - Portable gaming consoles

Detailed and Complete Alternative Models

• BQ24070RHLR
• MCP73831T-2ACI/OT
• MAX1555EZK+T
• LTC4054LES5-4.2#TRMPBF
• TPS2513DBVR

These alternative models offer similar functionality and can be considered as replacements for the BQ24064DRCT in specific applications.

In conclusion, the BQ24064DRCT is a highly integrated battery charger IC designed for single-cell Li-Ion and Li-Pol batteries. Its efficient charging algorithm, comprehensive protection features, and wide input voltage range make it suitable for various portable electronic devices. While it has limitations in terms of battery type and multi-cell charging, there are alternative models available to cater to specific requirements.