Overview
The BQ24005PWPG4, produced by Texas Instruments, is a highly integrated Li-Ion linear charge management IC designed for two-cell Li-Ion battery packs. This device is part of the bq2400x series, which combines high-accuracy current and voltage regulation with FET pass-transistor and reverse-blocking Schottky diodes. It is ideal for space-limited applications such as PDAs, internet appliances, MP3 players, and digital cameras.
The BQ24005 offers advanced features like integrated voltage and current regulation, thermal protection, and charge-status indication, making it a robust solution for battery charging needs.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| 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 |
| Operating Free-Air Temperature Range | -40 | - | 70 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| Voltage Regulation Accuracy | - | ±1% | - | % |
| Continuous Charge Current | - | - | 1.2 | A |
| Package Type | - | - | 20-Lead HTSSOP PowerPAD™ | - |
Key Features
- Highly integrated solution with FET pass-transistor and reverse-blocking Schottky diodes
- 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
- 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 BQ24005PWPG4 used for?
The BQ24005PWPG4 is a Li-Ion linear charge management IC used for charging two-cell Li-Ion battery packs in various portable devices.
- What are the key features of the BQ24005PWPG4?
Key features include integrated voltage and current regulation, high-accuracy voltage regulation, up to 1.2-A continuous charge current, and various charge-status output options.
- What is the operating temperature range of the BQ24005PWPG4?
The operating free-air temperature range is from -40°C to 70°C.
- How does the BQ24005PWPG4 handle charge termination?
Charge is terminated by either maximum time or minimum taper current detection.
- What types of LEDs can the BQ24005PWPG4 drive for charge status indication?
The device can drive single, double, or bicolor LEDs for charge status indication.
- Does the BQ24005PWPG4 support thermal monitoring?
Yes, it supports temperature monitoring using an external thermistor.
- What is the package type of the BQ24005PWPG4?
The package type is 20-Lead HTSSOP PowerPAD™.
- How does the BQ24005PWPG4 handle deeply discharged cells?
The device includes integrated cell conditioning to revive deeply discharged cells and minimize heat dissipation.
- Can the BQ24005PWPG4 be configured for different charge times?
Yes, the charge timer can be configured through the TMR SEL pin to select between different total charge-time timers (3, 4.5, or 6 hours).
- What is the standby current of the BQ24005PWPG4?
The standby current is typically 1 µA.
- Is the BQ24005PWPG4 suitable for low-dropout linear charger designs?
Yes, it is ideal for low-dropout linear charger designs for two-cell Li-Ion packs.
