Overview
The Texas Instruments BQ24005PWPR is an advanced Li-Ion linear charge management IC designed for highly integrated and space-limited applications. This device is part of the bq2400x series and is particularly suited for charging two-cell Li-Ion battery packs with either coke or graphite anodes. The BQ24005PWPR combines high-accuracy current and voltage regulation, an integrated FET pass transistor, reverse-blocking Schottky, and thermal protection, making it ideal for low-dropout linear charger designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 20-Lead HTSSOP (PWP) | |
| Pins | 20 | |
| Operating Temperature Range | -20 to 70 | °C |
| Supply Voltage (VCC with respect to GND) | 13.5 | V |
| Input Voltage (IN, ISNS, EN, APG/THERM/CR/STAT1/STAT2, VSENSE, TMR SEL, VSEL) | 13.5 | V |
| Output Current (OUT pins) | 2 | A |
| Output Sink/Source Current (STAT1 and STAT2) | 10 | mA |
| Continuous Charge Current | Up to 1.2 | A |
| Voltage Regulation Accuracy | ±1% |
Key Features
- Highly Integrated Solution With FET Pass Transistor and Reverse-Blocking Schottky and Thermal Protection
- Integrated Voltage and Current Regulation With Programmable Charge Current
- High-Accuracy Voltage Regulation (±1%)
- Ideal for Low-Dropout Linear Charger Designs for Two-Cell Li-Ion Packs With Coke or Graphite Anodes
- Up to 1.2-A Continuous Charge Current
- Safety-Charge Timer During Preconditioning and Fast Charge
- Integrated Cell Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage of Charge
- Optional Temperature or Input-Power Monitoring Before and During Charge
- Various Charge-Status Output Options for Driving Single, Double, or Bicolor LEDs or Host-Processor Interface
- Charge Termination by Minimum Current and Time
- Low-Power Sleep Mode
Applications
- PDAs
- Internet Appliances
- MP3 Players
- Digital Cameras
Q & A
- What is the BQ24005PWPR used for?
The BQ24005PWPR is used for charging two-cell Li-Ion battery packs in various portable electronic devices.
- What is the package type of the BQ24005PWPR?
The BQ24005PWPR comes in a 20-Lead HTSSOP (PWP) package.
- What is the operating temperature range of the BQ24005PWPR?
The operating temperature range is -20°C to 70°C.
- What is the maximum continuous charge current of the BQ24005PWPR?
The maximum continuous charge current is up to 1.2 A.
- How accurate is the voltage regulation of the BQ24005PWPR?
The voltage regulation accuracy is better than ±1% over the operating junction temperature and supply voltage range.
- Does the BQ24005PWPR support temperature monitoring?
Yes, the BQ24005PWPR supports temperature monitoring using an external thermistor.
- How does the BQ24005PWPR terminate the charge cycle?
The charge is terminated by maximum time or minimum taper current detection.
- Does the BQ24005PWPR have a low-power sleep mode?
Yes, the BQ24005PWPR has a low-power sleep mode.
- What types of charge-status outputs are available on the BQ24005PWPR?
The BQ24005PWPR provides various charge-status output options for driving single, double, or bicolor LEDs or a host-processor interface.
- Can the BQ24005PWPR revive deeply discharged cells?
Yes, the BQ24005PWPR has integrated cell conditioning to revive deeply discharged cells and minimize heat dissipation during the initial stage of charge.
- What happens if the battery voltage falls below the internal recharge threshold?
The BQ24005PWPR automatically restarts the charge if the battery voltage falls below the internal recharge threshold.
