Overview
The BQ24630RGER from Texas Instruments is a highly integrated lithium phosphate switched-mode battery charge controller. This device is designed to provide a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation. It supports charging for 1-7 battery cells and operates within a 5-V to 28-V VCC input range. The BQ24630RGER is particularly suited for applications requiring efficient and safe battery charging, with features such as automatic system power selection, internal loop compensation, and dynamic power management.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | VQFN (RGE), 24 pins |
| Operating Temperature Range | -40°C to 85°C |
| VCC Input Operating Range | 5-V to 28-V |
| Supported Battery Cells | 1-7 cells |
| Switching Frequency | 300 kHz |
| Charge Voltage Accuracy | ±0.5% |
| Charge Current Accuracy | ±3% |
| Adapter Current Accuracy | ±3% |
| Gate Drive Voltage | 6 V |
| Driver Dead Time | 30 ns |
| Effective Duty Cycle | 99.95% Max. |
| Off-State Battery Discharge Current | < 15 µA |
| Off-State Input Quiescent Current | < 1.5 mA |
Key Features
- 300-kHz NMOS-NMOS Synchronous Buck Converter
- Stand-Alone Charger Specifically for Lithium Phosphate Batteries
- High-Accuracy Voltage and Current Regulation
- Automatic System Power Selection From Adapter or Battery
- Internal Loop Compensation and Soft Start
- Dynamic Power Management (DPM)
- Safety Protections: Input Overvoltage, Battery Thermistor Sense, Reverse Protection Input FET, Programmable Safety Timer, Charge Overcurrent Protection, Battery Short Protection, Battery Overvoltage Protection, Thermal Shutdown
- Status Outputs: Adapter Present, Charger Operation Status, Charge Enable Pin
- Low Quiescent Current: < 15 µA Off-State Battery Discharge Current, < 1.5 mA Off-State Input Quiescent Current
Applications
- Power Tool and Portable Equipment
- Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
- Netbook, Mobile Internet Device, and Ultra-Mobile PC
Q & A
- What is the BQ24630RGER used for? The BQ24630RGER is a highly integrated lithium phosphate switched-mode battery charge controller.
- What is the operating temperature range of the BQ24630RGER? The operating temperature range is -40°C to 85°C.
- How many battery cells does the BQ24630RGER support? It supports 1-7 battery cells.
- What is the switching frequency of the BQ24630RGER? The switching frequency is 300 kHz.
- What are the key safety features of the BQ24630RGER? Key safety features include input overvoltage protection, battery thermistor sense, reverse protection input FET, programmable safety timer, charge overcurrent protection, battery short protection, battery overvoltage protection, and thermal shutdown.
- What is the package type and pin count of the BQ24630RGER? The package type is VQFN (RGE) with 24 pins.
- What is the VCC input operating range of the BQ24630RGER? The VCC input operating range is 5-V to 28-V.
- Does the BQ24630RGER support dynamic power management? Yes, it supports dynamic power management (DPM).
- What are the typical applications of the BQ24630RGER? Typical applications include power tools, portable equipment, personal digital assistants, handheld terminals, industrial and medical equipment, and ultra-mobile PCs.
- How accurate is the charge voltage regulation of the BQ24630RGER? The charge voltage accuracy is ±0.5%.
