Overview
The BQ24600RVAT from Texas Instruments is a highly integrated Li-ion or Li-polymer switch-mode battery-charge controller. It features a constant-frequency synchronous PWM controller with high-accuracy charge current and voltage regulation. The device supports charging in three phases: preconditioning, constant current, and constant voltage. It also includes charge preconditioning, termination, and charge status monitoring. The BQ24600RVAT is designed for a wide range of applications, including portable equipment, industrial and medical devices, power tools, and mobile internet devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VCC) | 5 - 28 | V |
| Battery Charge Voltage Range | 2.1 - 26 | V |
| Maximum Charge Current | 10 | A |
| Number of Series Cells Supported | 1 - 6 | - |
| Charge-Voltage Accuracy | ±0.5% | - |
| Charge-Current Accuracy | ±3% | - |
| Package Type | VQFN-16 | - |
| Package Size | 3.5 mm x 3.5 mm | - |
| Operating Temperature Range | -40 to 85 | °C |
| Quiescent Current (Off-State) | < 1.5 mA | - |
| Battery Discharge Current (Off-State) | < 15 µA | - |
Key Features
- 1.2-MHz NMOS-NMOS Synchronous Buck Converter: High-efficiency switching converter.
- Stand-Alone Charger Support: For Li-ion or Li-polymer batteries.
- High-Accuracy Voltage and Current Regulation: ±0.5% charge-voltage accuracy and ±3% charge-current accuracy.[
- Internal Loop Compensation and Soft Start: Ensures stable and smooth charging operation.[
- Safety Features: Input overvoltage protection, battery thermistor sense, battery detection, built-in safety timer, charge overcurrent protection, battery short protection, battery overvoltage protection, and thermal shutdown.[
- Status Outputs: Adapter present, charger operation status, and charge enable pin.[
- Low Quiescent Current: Energy Star compliant with low off-state battery discharge and input quiescent current.[
Applications
- Portable Equipment: Mobile phones, tablets, and other handheld devices.[
- Industrial and Medical Equipment: Devices requiring reliable and efficient battery charging.[
- Power Tools: Cordless power tools and appliances.[
- Mobile Internet Devices and Ultra-Mobile PCs: Laptops, netbooks, and other mobile computing devices.[
Q & A
- What is the maximum charge current supported by the BQ24600RVAT?
The BQ24600RVAT supports up to 10 A of charge current.[
- What is the input voltage range for the BQ24600RVAT?
The input voltage range is from 5 V to 28 V.[
- How many series cells can the BQ24600RVAT support?
The device supports 1 to 6 series cells.[
- What are the key safety features of the BQ24600RVAT?
The device includes input overvoltage protection, battery thermistor sense, battery detection, built-in safety timer, charge overcurrent protection, battery short protection, battery overvoltage protection, and thermal shutdown.[
- What is the operating temperature range for the BQ24600RVAT?
The operating temperature range is from -40°C to 85°C.[
- Does the BQ24600RVAT support standalone charging?
Yes, the BQ24600RVAT is a standalone charger for Li-ion or Li-polymer batteries.[
- What is the package type and size of the BQ24600RVAT?
The package type is VQFN-16, and the size is 3.5 mm x 3.5 mm.[
- What are the typical applications for the BQ24600RVAT?
Typical applications include portable equipment, industrial and medical devices, power tools, and mobile internet devices.[
- Does the BQ24600RVAT have low quiescent current features?
Yes, it has low off-state battery discharge and input quiescent current, making it Energy Star compliant.[
- How does the BQ24600RVAT regulate charge voltage and current?
The device uses a high-accuracy voltage band gap and regulator for charge voltage, and the charge current is set via the ISET input and sensed by a resistor connected between SRP and SRN pins.[
