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Texas Instruments BQ7695202PFBR
- Part No.:
- BQ7695202PFBR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 48-TQFP
- Datasheet:
-
BQ7695202PFBR.pdf
- Description:
- 3-S TO 16-S HIGH-ACCURACY BATTER
- Quantity:
- Payment:
- Shipping:
Inventory:2,498
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Product details
Overview
BQ7695202PFBR from Texas Instruments is a high-accuracy, 3- to 16-series Li-ion/LiFePO₄ battery monitor and protector IC with integrated high-side charge-pump NFET drivers, dual programmable LDOs (REG1 enabled at 3.3 V by default), and simultaneous voltage/current ADC sampling. It delivers <10 mV typical cell voltage measurement error, <1 µV typical input offset for coulomb counting, and supports ±200-mV sense resistor range in industrial battery packs such as e-scooters and cordless power tools.
For engineers reviewing the BQ7695202PFBR datasheet, BQ7695202PFBR pinout, BQ7695202PFBR application, or BQ7695202PFBR equivalent, key selection considerations include CRC-enabled I²C interface, autonomous cell balancing capability, 48-pin TQFP package with 7 mm × 7 mm footprint, and 9–41 µA sleep-mode current consumption across configurable power states.
Technical Context
The BQ7695202PFBR implements two independent ADCs: one dedicated to high-accuracy cell voltage monitoring (<10 mV error) and another for precision current sensing with <1 µV input offset, enabling synchronized coulomb counting and voltage acquisition. Its protection subsystem integrates comparator-based overvoltage, undervoltage, overtemperature, and overcurrent detection with configurable thresholds and response delays.
It features an integrated charge pump driving high-side NFETs for charge/discharge control, autonomous recovery logic, and OTP-programmable configuration for production-line customization. The device supports three distinct low-power modes-SLEEP (24–41 µA), DEEPSLEEP (9–10 µA), and SHUTDOWN (1 µA)-with wake-up via TS2, LD, or HDQ events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Range | 3-series to 16-series Li-ion/LiFePO₄ stacks - enables direct monitoring of battery packs up to 80 V nominal without external level-shifting. |
| Cell Voltage Accuracy | <10 mV (typical) - ensures precise state-of-charge estimation and tight overvoltage/undervoltage protection margins. |
| Coulomb Counter Offset | <1 µV (typical) - minimizes integration drift during long-term current measurement across ±200-mV sense resistor range. |
| Supply Current (NORMAL) | 286 µA - supports continuous real-time monitoring in always-on BMS applications with minimal battery drain. |
| I²C Speed | 400 kHz - allows fast register access and configuration updates while maintaining compatibility with standard microcontroller peripherals. |
| Package | 48-pin TQFP (PFB), 7 mm × 7 mm - provides thermal and mechanical robustness for industrial PCB layouts with accessible pinout for cell sensing and FET drive. |
| CRC Support | Enabled - ensures data integrity on I²C bus against noise-induced corruption in electrically noisy battery pack environments. |
Pinout & Package
48-pin TQFP (PFB) package with 0.5-mm pitch, 7 mm × 7 mm body size, and exposed thermal pad. Designed for surface-mount assembly and thermal dissipation in sealed battery modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC16 | Cell voltage sense inputs | Direct analog inputs for 16-cell stack monitoring; VC0 = bottom cell negative, VC16 = top-of-stack; support passive cell balancing current return paths. |
| SRP / SRN | Coulomb counter differential inputs | High-precision inputs for integrating voltage across external sense resistor; enable bidirectional current measurement with <1 µV offset. |
| CHG / DSG | NMOS FET gate drivers | High-voltage (≤85 V) open-drain outputs for controlling discharge and charge FETs; require external pull-up resistors. |
| PCHG / PDSG | PFET precharge/predischarge drivers | Charge-pump-assisted outputs for safe inrush current limiting and load pre-discharge; tolerate VBAT–10 V input range. |
| REG1 / REG2 | Programmable LDO outputs | REG1 defaults to 3.3 V (enabled); both LDOs configurable from 1.8 V to 5.0 V for powering MCU, sensors, or communication interfaces. |
| ALERT / SDA / SCL / HDQ | Multi-function I/O pins | Support I²C (400 kHz), HDQ one-wire, or general-purpose ADC/thermistor inputs; reduce external component count in space-constrained designs. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous cell balancing | Configurable per-cell balancing current up to 100 mA without host intervention - extends pack life and improves SOC uniformity across aging cells. |
| Integrated secondary chemical fuse drive | Dedicated FUSE pin with sense and drive capability - enables coordination with external polymeric fuses for redundant overcurrent protection beyond FET limits. |
| Tolerant random cell attach sequence | Hardware-level sequencing immunity during manufacturing - eliminates need for strict cell connection order on production line, reducing assembly errors. |
| OTP memory programmability | Customer-programmable one-time memory for calibration data, protection thresholds, and device identity - enables post-manufacture customization without firmware update dependency. |
| Dual independent ADC architecture | Simultaneous voltage and current sampling with separate conversion paths - avoids timing skew between SOC and SOH calculations in dynamic load conditions. |
Applications
| Electric Scooter Battery Pack | E-Bike Main Pack Monitoring |
|---|---|
|
Use Scenario: Real-time cell voltage, temperature, and current monitoring in 13S Li-ion packs under variable regenerative braking and motor load cycles. IC Role / Device Role / Timing Role: Primary battery monitor and protector managing charge/discharge FETs, cell balancing, and fault reporting via I²C to main controller. Use Value: Enables accurate remaining range estimation and prevents overvoltage during regen by detecting individual cell excursions within <10 mV tolerance. |
Use Scenario: High-reliability BMS for 14S LiFePO₄ packs used in Class 3 e-bikes with integrated display and pedal-assist control. IC Role / Device Role / Timing Role: Standalone protector with autonomous balancing and CRC-secured I²C communication to handle safety-critical overtemperature and short-circuit events. Use Value: Reduces system-level validation effort by delivering factory-trimmed voltage accuracy and built-in diagnostics for ISO 26262-aligned functional safety workflows. |
| Cordless Power Tool Pack | Industrial Battery Backup Unit |
|
Use Scenario: Fast-charging 10S Li-ion packs subjected to high pulse currents (>30 A) and rapid thermal transients during tool operation. IC Role / Device Role / Timing Role: High-speed protector triggering sub-100-ms responses to overcurrent and overtemperature faults while logging event history in internal registers. Use Value: Prevents thermal runaway through coordinated FET shutdown and secondary fuse activation, supported by 9 µA DEEPSLEEP mode for storage-state monitoring. |
Use Scenario: Uninterruptible backup for telecom or edge computing systems using 12S Li-ion stacks requiring >10-year field reliability and zero maintenance. IC Role / Device Role / Timing Role: Always-on monitor with SHUTDOWN mode (1 µA) and wake-on-thermistor functionality for periodic health checks without auxiliary power. Use Value: Extends service life via autonomous balancing and OTP-stored calibration, eliminating drift-related false alarms in long-duration standby applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor and protector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7695201PFBR | SPI interface only; CRC enabled; REG1 LDO disabled by default | Preferred where host MCU lacks I²C but requires secure SPI communication and lower quiescent current in CONFIG_UPDATE mode | Select when SPI-native architecture exists and 3.3-V LDO output is not required for external circuitry. |
| BQ7694202PAPR | 14-pin TSSOP; supports up to 14-series cells; no integrated charge pump; single LDO (3.3 V) | Suitable for cost-sensitive, lower-cell-count packs where high-side NFET drive and dual LDOs are unnecessary | Choose for compact 3–14S designs with simpler protection needs and no requirement for autonomous recovery or chemical fuse coordination. |
Compared with BQ7695202PFBR, BQ7695201PFBR trades I²C compatibility for SPI security and lower default LDO loading, while BQ7694202PAPR reduces integration depth and cell count range to achieve smaller footprint and lower BOM cost - neither offers identical feature parity in high-side drive, dual LDO flexibility, or 16-cell scalability.
Availability
BQ7695202PFBR is available at Aetrix Electronics and suitable for e-scooter battery packs, cordless power tool systems, and industrial battery backup units requiring stable component supply, long-lifecycle support, and production-ready qualification.
Supply support for BQ7695202PFBR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with broad industrial and automotive design expertise.
The BQ76952 family was developed specifically for high-accuracy, high-voltage battery monitoring in multi-cell Li-ion and LiFePO₄ packs used in demanding portable and motive applications.
FAQ
What communication interfaces does the BQ7695202PFBR support?
The BQ7695202PFBR supports I²C at up to 400 kHz, SPI, and HDQ one-wire interfaces. For this specific variant, I²C is the primary interface with CRC enabled, and REG1 LDO is factory-configured to output 3.3 V. SPI and HDQ are available as alternate modes on shared pins, but I²C is optimized for host communication in most BQ7695202PFBR implementations.
Does the BQ7695202PFBR include integrated FET drivers for high-side switching?
Yes, the BQ7695202PFBR integrates a charge pump to drive high-side NFETs for protection functions. It provides dedicated PCHG and PDSG outputs for precharge and predischarge control, along with CHG and DSG outputs for main NMOS FETs. This eliminates the need for external high-voltage gate drivers in typical 3–16S battery pack designs.
What is the cell voltage measurement accuracy of the BQ7695202PFBR?
The BQ7695202PFBR achieves <10 mV typical cell voltage measurement accuracy across its full operating range. This specification is confirmed in the device's Electrical Characteristics table and applies directly to the BQ7695202PFBR variant under recommended operating conditions, enabling precise overvoltage and undervoltage protection thresholds.
How does the BQ7695202PFBR handle cell balancing?
The BQ7695202PFBR supports both autonomous and host-controlled cell balancing. It uses the VC0–VC16 pins to route balancing current through external resistors, with up to 100 mA per cell. Balancing can be triggered automatically based on voltage differentials or commanded via I²C register writes - a core function implemented identically across all BQ76952 variants including the BQ7695202PFBR.
What power modes does the BQ7695202PFBR offer, and what are their typical currents?
The BQ7695202PFBR offers NORMAL (286 µA), multiple SLEEP (24–41 µA), multiple DEEPSLEEP (9–10 µA), and SHUTDOWN (1 µA) modes. These values are measured under typical conditions and apply to the BQ7695202PFBR variant. Mode selection is controlled via I²C commands or hardware pins like RST_SHUT, enabling adaptive power management in battery-powered systems.
BQ7695202PFBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Multi-Function Controller
- Battery Chemistry:
- LiFePO4/Li-ion
- Number of Cells:
- 3 ~ 16
- Fault Protection:
- Over Temperature
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFP (7x7)
BQ7695202PFBR FAQ
1.How can I place an order for BQ7695202PFBR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7695202PFBR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BQ7695202PFBR reliable?
The price and inventory of BQ7695202PFBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7695202PFBR is usually 5 days.
3.What payment methods are accepted for BQ7695202PFBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7695202PFBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7695202PFBR?
BQ7695202PFBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7695202PFBR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BQ7695202PFBR?
For technical support, including BQ7695202PFBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7695202PFBR requirements.
6.How does Aetrix verify that BQ7695202PFBR is sourced from the original manufacturer or authorized distributors?
All BQ7695202PFBR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BQ7695202PFBR meets industry standards.
7.What is the process for return or replacement of BQ7695202PFBR?
All BQ7695202PFBR units undergo pre-shipment inspection (PSI). If there is an issue with BQ7695202PFBR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BQ7695202PFBR part is unused and in its original packaging.
Return procedure for BQ7695202PFBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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