BQ76952Q-Q1 - 3-16S Battery Monitor AEC-Q100 | Texas Instruments
MPN: BQ76952Q-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.26 | $3.26 |
| 10 | $2.94 | $29.40 |
| 100 | $2.72 | $272.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
Drop-in alternatives for BQ76952Q-Q1 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:
BQ76952PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ76942PFBR
β Drop-Inπ Reference alternative (not in catalog)
BQ769142
β Drop-Inπ Reference alternative (not in catalog)
BQ76972
β‘ Same Packageπ Reference alternative (not in catalog)
BQ76952Q-Q1 Maximum Ratings & Electrical Characteristics
| Cell Count | 3-series to 16-series |
| Battery Chemistry | Li-ion, Li-polymer, LiFePO4 |
| Function | Battery monitor and protector (BMS AFE) |
| ADCs | 2 independent ADCs |
| Protection Suite | Voltage, temperature, current, internal diagnostics |
| Cell Balancing | Autonomous or host controlled |
| FET Drivers | Integrated high-side charge-pump NFET drivers |
| Package | 48-TQFP (7x7 mm) |
| Operating Temperature | -40C to +85C |
| Automotive Qualification | AEC-Q100 (Q1) |
| Communication Interface | [DATA_NEEDED: exact interface detail per datasheet] |
| Cell Voltage Accuracy | [DATA_NEEDED: mV figure from datasheet] |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Supply Type | Single supply, pack-powered |
| Recovery Mode | Optional autonomous protection recovery |
BQ76952Q-Q1 Pin Configuration
| Pin 1 | VC16 (highest cell input) β [DATA_NEEDED: exact pin map - refer to datasheet Section 6] |
| Pin 2-17 | VC15-VC0 / CAP1-CAP3 β [DATA_NEEDED: exact pin map - refer to datasheet Section 6] |
| Pin 48 | BAT / REG pin group β [DATA_NEEDED: exact pin map - refer to datasheet Section 6] |
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
BQ76952Q-Q1 is suitable for 6 applications: Electric Vehicle Battery Packs, Energy Storage Systems (ESS), E-Bikes and E-Scooters, UPS Battery Backup, Power Tools Battery Packs, Telecom Base Station Backup Batteries.
Electric Vehicle Battery Packs
The BQ76952Q-Q1's AEC-Q100 qualification and 16S support make it a primary BMS AFE for EV and hybrid traction and auxiliary packs. Its two independent ADCs continuously monitor cell voltages while the configurable protection subsystem handles overvoltage, undervoltage, overcurrent, and over-temperature events, and the integrated high-side charge-pump NFET drivers isolate the pack without external driver circuitry. Firmware-configurable thresholds allow reuse of the same silicon across multiple pack platforms, reducing qualification effort.
Recommended
Energy Storage Systems (ESS)
For residential and commercial ESS packs in the 48V (13S-16S) class, the BQ76952Q-Q1 provides high-accuracy cell measurement needed for precise state-of-charge estimation and maximum usable capacity. The autonomous protection mode allows the pack to protect itself even if the host MCU hangs, and host-controlled balancing optimizes capacity over thousands of cycles. The 48-TQFP footprint and single-silicon protection plus driver integration shorten BMS board design cycles.
Recommended
E-Bikes and E-Scooters
Light electric vehicles typically use 10S-13S packs, squarely inside the BQ76952Q-Q1's 3S-16S range. The integrated protection suite with autonomous recovery handles charge and discharge faults without host intervention, improving safety in cost-sensitive designs, while the high-side FET topology keeps the load return at ground potential. LiFePO4 chemistry support covers durable commuter packs as well as standard Li-ion.
Recommended
UPS Battery Backup
Data center and industrial UPS systems rely on series Li-ion strings where early fault detection prevents catastrophic failure. The BQ76952Q-Q1's internal diagnostic protections complement voltage, current, and temperature monitoring, and its two ADC architecture supports continuous surveillance. Autonomous protection with optional recovery maintains pack availability during transient events, which is essential for always-on backup power applications.
Recommended
Power Tools Battery Packs
High-discharge power tool packs in the 3S-12S range benefit from the BQ76952Q-Q1's current and temperature protections, which guard against overcurrent during stall conditions typical in drills and saws. The autonomous recovery option allows temporary overcurrent events to clear without user service. Host-controlled balancing via an embedded MCU keeps series cell states matched for maximum runtime over pack life.
Recommended
Telecom Base Station Backup Batteries
48V telecom backup strings (typically 13S LiFePO4) use the BQ76952Q-Q1's LiFePO4 support and high-accuracy monitoring to maximize cycle life in outdoor cabinets. Its -40C to +85C operating range and AEC-Q100 robustness withstand harsh site environments, while the integrated protection subsystem simplifies compliance with telecom battery safety requirements. The TQFP package supports compact smart-battery board designs.
Recommended
Recommended Products Summary
Engineering reference data for BQ76952Q-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BQ76952PFBR | BQ76942PFBR | BQ769142 |
|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same family |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Max Cell Count | 16S | 16S | 10S | 10S |
| AEC-Q100 Qualification | Yes (Q1) | No | No (BQ76942-Q1 variant exists) | [DATA_NEEDED] |
| Chemistry Support | Li-ion, Li-polymer, LiFePO4 | Li-ion, Li-polymer, LiFePO4 | Li-ion, Li-polymer, LiFePO4 | Li-ion, Li-polymer, LiFePO4 |
| High-Side NFET Drivers | Yes, integrated charge pump | Yes | Yes | Yes |
| Independent ADCs | 2 | 2 | 2 | [DATA_NEEDED] |
| Cell Balancing | Autonomous or host controlled | Autonomous or host controlled | Autonomous or host controlled | Host controlled |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Automotive qualification (vs BQ76952PFBR)
- 16S maximum cell count (vs BQ76942PFBR)
- Integrated high-side charge-pump NFET drivers (vs ADI LTC6813)
Design Notes
Cell input pins are high-voltage pins with specialized internal circuitry. TI application report SLUAAF2 provides pin-equivalent diagrams for the BQ76952, BQ76942, and BQ769142 family - follow it when selecting series input resistors and protection components on VC0-VC16. Keep cell input routing symmetrical and place RC filters close to the device to preserve measurement accuracy.
The integrated high-side charge-pump NFET drivers eliminate the need for an external driver supply, but verify gate-drive capability against your selected protection FETs' total gate charge at minimum pack voltage. Ensure the REG/supply pin decoupling follows the datasheet recommended capacitor values so the charge pump and ADCs operate within spec during FET switching transients.
Protection thresholds, delays, and balancing behavior are firmware-configurable - do not assume defaults suit your chemistry. LiFePO4 requires distinctly different OV/UV limits than Li-ion. Also confirm whether your variant operates in autonomous or host-controlled mode; mixing modes can leave protection features unconfigured at startup. Validate with TI's BQStudio evaluation hardware before production.
Compliance Information
AEC-Q100 qualification from Q1 designation per TI product data. RoHS compliant per distributor listings (DigiKey).
