BQ29312APWR
Battery Management 2-3-4 Cell Lithium Protection AFEBQ29312APWR
Battery Management 2-3-4 Cell Lithium Protection AFE
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Manufacturer Part # : BQ29312APWR
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Package/Case: TSSOP-24
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Part Status : ACTIVE
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Brand: Texas Instruments
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Product Categories : Battery Management
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Series : BQ29312
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BQ29312APWR DataSheet
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Interested Parts
BQ29312APWR Details
The BQ29312APWR is a battery protection and monitoring IC from Texas Instruments, designed for use in battery management systems. This IC provides overcharge, overdischarge, and short circuit protection for single-cell Li-Ion or Li-Polymer batteries. It also features cell balancing functionality to enhance battery performance and lifespan. The BQ29312APWR is available in a small and compact package, making it suitable for space-constrained applications.
Pinout
- 1 (VCU): Voltage Control Unit
- 2 (VSS): Ground
- 3 (VC2P): Second Cell Balancing Control
- 4 (VC1P): First Cell Balancing Control
- 5 (VC1N): First Cell Balancing Sense
- 6 (VC2N): Second Cell Balancing Sense
- 7 (EN1): Enable 1
- 8 (EN2): Enable 2
- 9 (CELL): Battery Cell Connection
- 10 (VM): Voltage Monitoring
- 11 (SCL): I2C Serial Clock
- 12 (SDA): I2C Serial Data
- 13 (CD0): Control Input 0
- 14 (CD1): Control Input 1
(Tip: For detailed pinout information, please refer to the corresponding datasheet.)
Key Features
- Battery Protection: Offers overcharge, overdischarge, and short circuit protection for Li-Ion or Li-Polymer batteries.
- Cell Balancing: Includes cell balancing functionality to equalize cell voltages and improve battery performance.
- Small and Compact: Housed in a compact package for easy integration into space-constrained applications.
- Enhanced Safety: Ensures safe operation by preventing battery damage and minimizing the risk of accidents.
- I2C Interface: Utilizes an I2C interface for easy communication and control.
Application
- Battery Management Systems: Ideal for use in battery management systems for single-cell Li-Ion or Li-Polymer batteries.
- Portable Devices: Suitable for portable electronic devices with rechargeable batteries.
- Energy Storage: Used in energy storage systems to protect and monitor battery cells.
Where to Use
The BQ29312APWR is suitable for applications that require battery protection and monitoring, particularly in battery management systems. It is commonly used in portable devices, energy storage systems, and other applications where battery safety and performance are crucial.
How to Use
Connect the BQ29312APWR to your battery system by wiring the appropriate battery cell connections to the CELL pin. Provide a voltage reference to the VCU pin and ensure proper grounding with the VSS pin. Use the enable pins (EN1 and EN2) to control the protection functions. Utilize the I2C interface (SCL and SDA) for communication and monitoring. For detailed usage instructions, refer to the datasheet.
Application Circuit
The application circuit diagram for the BQ29312APWR illustrates how to integrate the IC into a battery management system. It includes connections for voltage control, cell balancing, enable pins, and communication interface, ensuring proper operation and battery protection.
(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)
Equivalents
- BQ2970: A similar battery protection and monitoring IC with comparable features and functionality from Texas Instruments.
- MAX1783: An alternative battery protection and monitoring IC from Maxim Integrated with equivalent capabilities.
Complementary
The BQ29312APWR can be complemented by the BQ76940, which provides additional battery monitoring and protection features for multi-cell battery systems.
When selecting complementary ICs, ensure their capabilities and specifications align with your specific battery management system requirements.
Frequently Asked Questions
Q: What types of batteries are compatible with the BQ29312APWR?
A: The BQ29312APWR is designed for single-cell Li-Ion or Li-Polymer batteries. Ensure that the battery chemistry and voltage range align with the specifications provided in the datasheet.
Q: Does the BQ29312APWR support overcurrent protection?
A: No, the BQ29312APWR does not have built-in overcurrent protection. It primarily provides overcharge, overdischarge, and short circuit protection. Consider additional external circuitry for overcurrent protection if required for your application.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Number of series cells (min) | 2 | Vin (max) (V) | 25 |
Features | Cell balancing, High-side driver, I2C support, LDO output, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Separate MCU requirement, Short-current detection | Device type | Protector |
Number of series cells (max) | 4 | Operating temperature range (°C) | -40 to 85 |
Rating | Catalog | Communication interface | I2C |
Operating current (typ) (µA) | 60 |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is BQ29312APWR?
The BQ29312APWR is a precision gas gauge and protection integrated circuit designed by Texas Instruments. It is used in battery management systems to monitor and protect individual cell voltages in lithium-ion or lithium-polymer battery packs.
How Does BQ29312APWR Work?
The BQ29312APWR works by monitoring the voltage of each cell in a battery pack and providing protection functions such as overvoltage, undervoltage, and overcurrent protection. It communicates with a host microcontroller using a serial interface to report battery status and control charging and discharging processes.
How Many Pins does BQ29312APWR have and What are the Functions of the Pinout Configuration?
The BQ29312APWR is housed in a 14-pin TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:
- VCC: Power supply input pin.
- GND: Ground pin.
- SCL, SDA: Serial communication interface pins.
- CELL1 to CELL5: Pins for connecting to individual battery cell voltages.
- SRN, SDN: Alert and shutdown pins for system protection.
What are the Pros and Cons of BQ29312APWR?
Pros:
- Cell Monitoring: Allows precise monitoring of individual cell voltages for accurate battery management.
- Protection Functions: Provides essential protection features to prevent damage to battery cells.
- Serial Interface: Enables communication with external microcontrollers for system integration.
- Compact Package: Housed in a small TSSOP package for space-efficient designs.
Cons:
- Complexity: Requires proper configuration and programming for optimal performance.
- External Components: May require additional components such as resistors and capacitors for specific applications.
Are There Any Equivalents/Alternatives to BQ29312APWR for Recommendation?
- The BQ76940 from Texas Instruments is a similar battery management IC with additional features.
- Alternatives to the BQ29312APWR include the MAX14920 from Maxim Integrated and the LTC6804 from Analog Devices.
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