BQ76952 - 3-16S Li-Ion/LiFePO4 Battery Monitor | Texas Instruments
MPN: BQ76952 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for BQ76952 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BQ76942PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ769142PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ7695202PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ7695201PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ76972PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ76952 Maximum Ratings & Electrical Characteristics
| Function | Battery monitor and protector for Li-ion, Li-polymer, and LiFePO4 battery packs |
| Cell Series Support | 3-Series to 16-Series |
| Battery Chemistry | Li-ion, Li-polymer, LiFePO4 |
| Package | 48-TQFP (7x7 mm) |
| Pin Count | 48 |
| Mounting Type | Surface Mount |
| Cell Balancing | Autonomous or host controlled |
| Integrated Drivers | High-side charge-pump NFET drivers |
| Protection Subsystem | Highly configurable |
| Temperature Sensing | Up to 9 external thermistors plus internal die temperature |
| Communication Interface | I2C (CRC not enabled by default) |
| CRC Variant | BQ7695202 available with I2C CRC enabled by default |
| Lifecycle Status | Active per TI compare tool |
| Family Compatibility | BQ76942 drop-in replacement for up to 10S; BQ769142 functionally similar with I2C CRC |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| Supply Voltage Range | [DATA_NEEDED: input supply voltage range] |
| Cell Voltage Accuracy | [DATA_NEEDED: cell voltage measurement accuracy] |
| Current Measurement Accuracy | [DATA_NEEDED: current sense accuracy/offset] |
| RoHS Status | [DATA_NEEDED: RoHS status] |
BQ76952 48-tqfp (7x7 mm) Pin Configuration Guide
Complete pinout information for BQ76952 (48-tqfp (7x7 mm) package) with 48 pins. This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for BQ76952.
Refer to the datasheet for full pin configuration.
Estimated pin count: 48 pins (digital package)
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
BQ76952 is suitable for 6 applications: E-Bike and E-Scooter Battery Packs, Energy Storage Systems (ESS), Power Tool Battery Packs, UPS Battery Backup, Portable and Wearable Devices, Industrial Robotics and AGV Batteries.
E-Bike and E-Scooter Battery Packs
The BQ76952 monitors 3-16 series Li-ion or LiFePO4 cells in e-bike and e-scooter packs, providing accurate voltage, current, and temperature data to the host controller. Its integrated high-side charge-pump NFET drivers allow direct control of charge and discharge FETs, simplifying pack-level protection. The configurable protection subsystem handles overcurrent, short-circuit, and thermal faults common in high-vibration, high-current traction applications. With up to 9 thermistor inputs, the BQ76952 can monitor multiple cell locations and motor controller temperatures, making it suitable for compact, high-power-density battery packs.
Recommended
Energy Storage Systems (ESS)
In residential and industrial energy storage systems, the BQ76952 provides high-accuracy cell monitoring for 16-series LiFePO4 racks. Its autonomous balancing reduces host overhead, while the configurable protection subsystem ensures safe operation under charge/discharge faults. The device's I2C interface connects to a system controller that manages state-of-charge and state-of-health algorithms. Because the BQ76952 supports up to 9 external thermistors, it can monitor temperatures across the battery bank. The high-side NFET drivers allow safe disconnection of the pack during overvoltage, undervoltage, or overcurrent events, improving both safety and cycle life.
Recommended
Power Tool Battery Packs
Cordless power tools demand high discharge rates and fast charging. The BQ76952 handles 3-16S Li-ion packs with a configurable protection subsystem for overcurrent, short-circuit, and temperature faults. Its high-side charge-pump NFET drivers enable low-side or high-side protection topologies with minimal external components. Host-controlled balancing can be used during charging to equalize cells, maximizing runtime and safety. The compact 48-TQFP package fits within the tight PCB constraints of a power tool battery pack, while the I2C interface connects to a tool MCU for fuel gauging and protection state reporting.
Recommended
UPS Battery Backup
For uninterruptible power supplies, the BQ76952 provides reliable monitoring of lead-free Li-ion or LiFePO4 battery strings up to 16S. Its high-accuracy monitoring system tracks cell voltages and temperatures to optimize charge and discharge parameters, extending battery life. The device's protection subsystem can automatically disconnect the pack on cell overvoltage, undervoltage, or overcurrent, preventing damage to downstream loads. Autonomous cell balancing keeps the string balanced during float charging. The BQ76952's I2C output supplies pack telemetry to the UPS controller for capacity estimation and service alerts.
Recommended
Portable and Wearable Devices
In high-end portable devices with multi-cell Li-polymer batteries, the BQ76952 gives engineers a scalable monitoring and protection AFE. Although it supports up to 16S, it can also be used in lower cell-count designs with the same I2C protocol and protection feature set. The device supports autonomous balancing, so small MCUs offload battery management tasks. Its low-power monitoring and flexible interrupt options help extend runtime in battery-powered products. The 48-TQFP package is larger than typical wearable ICs, so it is best suited to compact power banks, medical monitors, and industrial handhelds rather than true wearables.
Recommended
Industrial Robotics and AGV Batteries
Automated guided vehicles and industrial robots use 48V and higher battery packs that map naturally to 10-16 series LiFePO4 cells. The BQ76952 provides deterministic monitoring and protection, with a configurable protection engine that can react independently of the host processor. Integrated high-side NFET drivers allow the BMS to cut off power under overcurrent or short-circuit conditions. Up to 9 thermistor inputs allow thermal monitoring of cell groups and motor controllers. The I2C interface is simple to integrate with a central robot controller, while the BQ76942/42 and BQ769142 family options provide design flexibility across different pack voltages.
Recommended
Recommended Products Summary
Engineering reference data for BQ76952 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BQ76942PFBR | BQ769142PFBR | BQ7695202PFBR |
|---|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Cell Series Support | 3-Series to 16-Series | Up to 10-Series | 3-Series to 16-Series | 3-Series to 16-Series |
| Battery Chemistry | Li-ion, Li-polymer, LiFePO4 | Li-ion, Li-polymer, LiFePO4 | Li-ion, Li-polymer, LiFePO4 | Li-ion, Li-polymer, LiFePO4 |
| I2C CRC Default | Disabled | [DATA_NEEDED] | Enabled | Enabled |
| Integrated High-Side NFET Drivers | Yes | Yes | Yes | Yes |
| Cell Balancing | Autonomous or host controlled | Autonomous or host controlled | Autonomous or host controlled | Autonomous or host controlled |
| Thermistor Support | Up to 9 external thermistors | [DATA_NEEDED] | Up to 9 external thermistors | [DATA_NEEDED] |
Key Differentiators
- Supports up to 16-series packs (vs BQ76942PFBR)
- Flexible I2C CRC configuration (vs BQ769142PFBR)
- Broad TI family compatibility (vs BQ76942PFBR and BQ769142PFBR)
Design Notes
After designing with the BQ76952, check the default I2C CRC setting. The standard BQ76952 has I2C CRC disabled by default, while the BQ769142 and BQ7695202 variants have it enabled. If your host firmware assumes CRC is active, communication will fail. Select the correct variant or adjust the host protocol. Also terminate unused high-voltage pins according to the TI datasheet to prevent unexpected faults.
Place the current-sense resistor close to the SRP and SRN pins and route these signals differentially to minimize noise coupling. For the 48-TQFP package, provide a solid ground return path for the protection FETs and keep the high-current path separate from the analog sense traces. TI application notes show pin-equivalent diagrams for the BQ76952, BQ76942, and BQ769142, which can help with layout reuse across family variants.
The BQ76952 is a battery monitoring IC and does not dissipate significant power itself, but the external high-side charge-pump NFET drivers may source current into the FET gates. Verify that the PCB copper area around the TQFP is adequate for the die temperature and that thermistor traces are routed away from power components. For 16S packs, ensure the board layout has enough spacing for high-voltage cell connections to meet safety standards.
Compliance Information
Verified web data does not include explicit compliance statements for BQ76952. TI datasheet or distributor pages should be checked for RoHS/REACH status. The standard BQ76952 is not listed as AEC-Q100 qualified in the retrieved data.
