Overview
The Texas Instruments BQ24100RHLRG4 is a highly integrated synchronous switched-mode charge management IC, part of the bqSWITCHER™ series. This device is designed for efficient charging of single-, two-, or three-cell Li-Ion and Li-Polymer battery packs. It features a built-in synchronous PWM controller and power FETs, making it ideal for a wide range of portable applications such as handheld products, portable media players, and industrial equipment.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC and IN) | 4.35 | - | 16 | V |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Output Voltage (for 1-cell operation) | - | 4.2 | - | V |
| Output Voltage (for 2-cell operation) | - | 8.4 | - | V |
| Charge Current Range | 150 | - | 2000 | mA |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 39.2 | °C/W |
Key Features
- Integrated synchronous PWM controller and power FETs for up to 2-A charge rate.
- High-accuracy voltage and current regulation.
- Charge preconditioning, charge status, and charge reverse leakage protection.
- Built-in battery detection and thermal shutdown protection.
- Externally programmable charge voltage and current.
- Available in a 20-pin, 3.50 mm × 4.50 mm VQFN package.
- Supports single-, two-, or three-cell Li-Ion and Li-Polymer battery packs.
Applications
- Handheld products.
- Portable media players.
- Industrial and medical equipment.
- Portable equipment.
Q & A
- What is the BQ24100RHLRG4 used for?
The BQ24100RHLRG4 is used for charging single-, two-, or three-cell Li-Ion and Li-Polymer battery packs in various portable applications.
- What is the maximum charge current of the BQ24100RHLRG4?
The maximum charge current is up to 2 A.
- What are the key features of the BQ24100RHLRG4?
Key features include integrated synchronous PWM controller and power FETs, high-accuracy voltage and current regulation, charge preconditioning, and thermal shutdown protection.
- What is the operating junction temperature range of the BQ24100RHLRG4?
The operating junction temperature range is from -40°C to 125°C.
- What package type is the BQ24100RHLRG4 available in?
The device is available in a 20-pin, 3.50 mm × 4.50 mm VQFN package.
- Can the BQ24100RHLRG4 be used for charging LiFePO4 batteries?
No, the BQ24100RHLRG4 is specifically designed for Li-Ion and Li-Polymer batteries. For LiFePO4 batteries, other models like the bq24105 should be considered.
- How is the charge voltage programmed in the BQ24100RHLRG4?
The charge voltage can be externally programmed using the CELLS pin and appropriate resistor configurations.
- What is the purpose of the TS pin in the BQ24100RHLRG4?
The TS pin is used for temperature sensing, allowing the device to monitor the temperature and adjust charging accordingly.
- Does the BQ24100RHLRG4 have built-in thermal protection?
- Can the BQ24100RHLRG4 operate in sleep mode?
- What are some common applications of the BQ24100RHLRG4?
