Overview
The BQ2014SN-D120TR, produced by Texas Instruments, is a sophisticated gas gauge IC designed for accurate measurement and management of rechargeable NiCd and NiMH batteries. This component is intended for integration into battery packs or in-system installations to maintain a precise record of available battery charge. It features advanced charge and discharge monitoring, self-discharge compensation, and temperature adjustments to ensure reliable battery performance across various operating conditions.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D) - 16 pins |
| Operating Temperature Range | 0°C to 70°C |
| Standby Current | 120µA typical |
| Communication Interface | Single-wire serial communication port |
| LED Drivers | 5 LED drivers |
| Charge Control Output | Operates external charge controller like bq2004 Fast Charge IC |
| Self-Discharge Compensation | Using internal temperature sensor |
| End-of-Discharge Threshold | User-selectable |
| Battery Information Availability | Battery voltage, nominal available charge, temperature, etc. available over serial port |
Key Features
- Conservative and repeatable measurement of available charge in rechargeable batteries
- Charge control output operates an external charge controller such as the bq2004 Fast Charge IC
- Designed for battery pack integration
- Display capacity via single-wire serial communication port or direct drive of LEDs
- Measurements compensated for current and temperature
- Self-discharge compensation using internal temperature sensor
- User-selectable end-of-discharge threshold
- Battery voltage, nominal available charge, temperature, etc. available over serial port
- 16-pin narrow SOIC package
Applications
The BQ2014SN-D120TR is suitable for a variety of applications that require precise battery management, including:
- Battery-powered consumer electronics
- Portable devices such as cordless phones, power tools, and electric vehicles
- Industrial battery packs and systems
- Medical devices requiring reliable battery monitoring
Q & A
- What is the primary function of the BQ2014SN-D120TR?
The primary function is to accurately measure and manage the charge of rechargeable NiCd and NiMH batteries.
- What type of package does the BQ2014SN-D120TR come in?
The component comes in a 16-pin narrow SOIC package.
- What is the operating temperature range of the BQ2014SN-D120TR?
The operating temperature range is from 0°C to 70°C.
- How does the BQ2014SN-D120TR compensate for self-discharge?
It compensates for self-discharge using an internal temperature sensor and timer.
- Can the BQ2014SN-D120TR control an external charge controller?
Yes, it can control an external charge controller such as the bq2004 Fast Charge IC.
- How does the BQ2014SN-D120TR communicate with external devices?
It communicates through a single-wire serial communication port.
- What information is available over the serial port?
Battery voltage, nominal available charge, temperature, and other battery-related information are available over the serial port.
- Can the end-of-discharge threshold be adjusted?
Yes, the end-of-discharge threshold is user-selectable.
- How does the BQ2014SN-D120TR handle battery capacity recalibration?
Battery capacity is automatically recalibrated or “learned” during a discharge cycle from full to empty.
- What is the typical standby current of the BQ2014SN-D120TR?
The typical standby current is 120µA.
