BQ2040SN-C408 Texas Instruments In Stock
BQ2040SN-C408 is a smart battery gas gauge IC by Texas Instruments, designed for Li-ion and NiMH battery pack management with SBS-compliant fuel gauging. Key specs: 1-4 cell support, SMBus interface, 12-bit ADC, programmable chemistry profiles. From $14.44, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- BQ2040SN-C408 Datasheet PDF
- Price
- From $14.4400(MOQ 5)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of BQ2040SN-C408?
- SBS 1.1-compliant smart battery gas gauge with accurate remaining capacity estimation
- Supports 1 to 4 series Li-ion or NiMH cells with programmable chemistry profiles
- 12-bit ADC for high-accuracy current, voltage, and temperature measurement
- SMBus / I2C interface for host communication and battery data reporting
- Integrated self-discharge compensation and cycle count tracking for battery health monitoring
What is BQ2040SN-C408 used for?
The BQ2040SN-C408 is widely used in portable electronics such as laptops, power tools, and medical devices requiring precise battery state-of-charge monitoring. It suits smart battery pack designs in industrial handheld equipment and UPS systems where SBS protocol compliance and accurate fuel gauging are critical. The IC is also employed in embedded systems needing real-time battery health data via SMBus for predictive maintenance.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the BQ2040SN-C408 datasheet?
BQ2040SN-C408 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for BQ2040SN-C408?
Compatible alternatives and drop-in replacements for BQ2040SN-C408:
Frequently Asked Questions
What battery chemistries does the BQ2040SN-C408 support?
The BQ2040SN-C408 supports both Lithium-Ion (Li-ion) and Nickel-Metal Hydride (NiMH) battery chemistries. It can manage 1 to 4 series-connected cells and uses programmable chemistry profiles stored in EEPROM to accurately estimate remaining capacity for each chemistry type.
What communication interface does the BQ2040SN-C408 use?
The BQ2040SN-C408 uses the SMBus (System Management Bus) interface, which is compatible with I2C. This allows the IC to communicate battery status data—including state of charge, voltage, current, and temperature—to a host system following the SBS 1.1 smart battery specification.
What is the typical application for the BQ2040SN-C408?
The BQ2040SN-C408 is typically used in smart battery packs for laptops, portable medical devices, power tools, and industrial handheld equipment. Its SBS-compliant gas gauging and SMBus interface make it ideal for any application requiring accurate battery monitoring and state-of-health reporting.
What package does the BQ2040SN-C408 come in?
The BQ2040SN-C408 is available in an SOIC package. The 'SN' suffix in Texas Instruments part numbers typically denotes the SOIC (Small Outline Integrated Circuit) surface-mount package, which is suitable for automated PCB assembly in compact battery management designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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