Overview
The BQ24100RHLR, produced by Texas Instruments, is a highly integrated synchronous switched-mode charge management IC designed for lithium-ion and lithium-polymer battery packs. This device is part of the bqSWITCHER™ series, which is ideal for highly efficient charger designs in various portable and industrial applications. The BQ24100RHLR features an integrated synchronous PWM controller and power FETs, ensuring high-accuracy voltage and current regulation.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC and IN) | 4.35 | - | 16 | V |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Maximum Charge Current | - | - | 2 | A |
| Oscillator Frequency | - | 1.1 | - | MHz |
| Internal P-channel MOSFET On-resistance | 400 | - | 500 | mΩ |
| Internal N-channel MOSFET On-resistance | 130 | - | 150 | mΩ |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | 39.2 | - | °C/W |
Key Features
- Integrated synchronous fixed-frequency PWM controller operating at 1.1 MHz with 0% to 100% duty cycle.
- Integrated power FETs for up to 2-A charge rate.
- High-accuracy voltage and current regulation.
- Charge preconditioning, charge status, and charge termination detection.
- Thermal shutdown and protection.
- Built-in battery detection and reverse leakage protection.
- Available in a 20-pin, 3.50 mm × 4.50 mm VQFN package.
Applications
- Handheld products.
- Portable media players.
- Industrial and medical equipment.
- Portable equipment.
Q & A
- What is the BQ24100RHLR used for?
The BQ24100RHLR is used for managing the charging of lithium-ion and lithium-polymer battery packs in various portable and industrial applications.
- What is the maximum charge current of the BQ24100RHLR?
The maximum charge current of the BQ24100RHLR is 2 A.
- What is the operating frequency of the PWM controller in the BQ24100RHLR?
The PWM controller operates at a fixed frequency of 1.1 MHz.
- What type of package is the BQ24100RHLR available in?
The BQ24100RHLR is available in a 20-pin, 3.50 mm × 4.50 mm VQFN package.
- Does the BQ24100RHLR have thermal protection features?
Yes, the BQ24100RHLR includes thermal shutdown and protection features.
- How does the BQ24100RHLR handle battery detection?
The BQ24100RHLR has built-in battery detection capabilities.
- What is the junction-to-ambient thermal resistance of the BQ24100RHLR?
The junction-to-ambient thermal resistance (RθJA) is approximately 39.2 °C/W.
- Can the BQ24100RHLR be used for single-cell or two-cell battery packs?
Yes, the BQ24100RHLR can be used for both single-cell and two-cell battery packs, selectable via the CELLS pin.
- What is the purpose of the TTC input in the BQ24100RHLR?
The TTC input is used for timer and termination control, allowing the setting of the charge timer.
- How does the BQ24100RHLR prevent battery drainage during sleep mode?
The device enters a low-power sleep mode if the VCC pin is removed, preventing battery drainage.
