Overview
The BQ2057CSNTR, manufactured by Texas Instruments, is a highly efficient, low-dropout linear battery charge controller designed for single-cell lithium-ion or lithium-polymer battery packs. This IC is particularly suited for cost-sensitive, compact portable electronic devices, offering advanced features such as high-precision current and voltage regulation, battery conditioning, temperature monitoring, and AutoComp™ technology for optimized charging rates. Its market positioning targets developers of portable electronics who require reliable and efficient battery management solutions.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Battery Chemistry | Lithium-Ion/Polymer | - | - |
| Number of Cells | 1 | - | - |
| Charging Current | Programmable | A | Constant current |
| Voltage Regulation Accuracy | ±1% | - | Over operating temperature and supply voltage range |
| Operating Temperature | -20 to 70 | °C | - |
| Supply Voltage | Up to 15 | V | - |
| Package | 8-SOIC | - | 3.90mm width |
Key Features
- AutoComp™ technology dynamically compensates for internal battery impedance to reduce charging time.
- Integrated voltage and current regulation with programmable charging current.
- Optional cell temperature monitoring before and during charging for enhanced safety.
- Low dropout voltage of 0.3V minimizes heat dissipation.
- Charging status output for LED or host processor interface.
Applications
The BQ2057CSNTR is widely used in portable electronic devices such as smartphones, tablets, and digital cameras. Its efficient battery management capabilities make it ideal for applications requiring compact and reliable power solutions. Additionally, its features like temperature monitoring and AutoComp™ technology ensure safe and rapid charging, making it suitable for consumer electronics, medical devices, and handheld instruments.
Q & A
What is the primary function of the BQ2057CSNTR?
The primary function of the BQ2057CSNTR is to manage the charging process of single-cell lithium-ion or lithium-polymer batteries efficiently and safely.
Can the BQ2057CSNTR handle multiple battery cells?
No, the BQ2057CSNTR is designed specifically for single-cell battery packs.
What is AutoComp™ technology?
AutoComp™ technology dynamically compensates for the internal impedance of the battery, which helps in reducing the overall charging time.
Is temperature monitoring supported by the BQ2057CSNTR?
Yes, the BQ2057CSNTR supports optional cell temperature monitoring before and during the charging process to ensure safety.
What is the dropout voltage of the BQ2057CSNTR?
The dropout voltage is 0.3V, which helps in minimizing heat dissipation during operation.
What is the voltage regulation accuracy of the BQ2057CSNTR?
The voltage regulation accuracy is better than ±1% over the operating temperature and supply voltage range.
What is the maximum supply voltage for the BQ2057CSNTR?
The maximum supply voltage is 15V.
What package does the BQ2057CSNTR come in?
The BQ2057CSNTR is available in an 8-SOIC package with a width of 3.90mm.
Can the BQ2057CSNTR be used in medical devices?
Yes, its reliable and efficient battery management capabilities make it suitable for use in medical devices.
What is the operating temperature range of the BQ2057CSNTR?
The operating temperature range is from -20°C to 70°C.
