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Texas Instruments BQ7692006PW
- Part No.:
- BQ7692006PW
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ7692006PW.pdf
- Description:
- IC BATT MON MULTI 3-5C 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:380
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Product details
Overview
BQ7692006PW from Texas Instruments is a 3- to 5-series Li-ion and LiFePO₄ battery monitor AFE with integrated charge/discharge FET drivers, coulomb counting, and hardware-based overvoltage (OV), undervoltage (UV), overcurrent (OCD), and short-circuit (SCD) protection. It supports up to five cells (≤25 V pack), features a 14-bit cell voltage ADC (±15 mV accuracy at 25°C), 16-bit current measurement (±40 LSB INL), and operates from –40°C to +85°C in e-bike and power tool battery packs.
For engineers reviewing the BQ7692006PW datasheet, BQ7692006PW pinout, BQ7692006PW application, or BQ7692006PW equivalent, this device delivers deterministic protection timing (1–8 s OV/UV delays), I²C-compatible digital interface with CRC option, random cell connection tolerance, and ultra-low-power SHIP mode (0.6–1.8 µA) - critical for long-idle industrial battery systems requiring field-replaceable safety integrity.
Technical Context
The BQ7692006PW implements a dedicated analog front-end architecture with independent 14-bit ADCs for cell voltage (250 ms update interval) and die/thermistor temperature, plus a separate 16-bit coulomb counter ADC with 250 ms conversion time. Its protection logic executes fully in hardware without host intervention, using configurable thresholds stored in nonvolatile registers.
It integrates low-side N-channel FET drivers (CHG/DSG pins) capable of 10–14 V output swing depending on REGSRC voltage, supports three thermistors via dedicated TS1/VC5X/VC10X biasing, and tolerates random cell connection order - eliminating strict top-to-bottom wiring constraints in modular battery assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Support | 3–5 series Li-ion/LiFePO₄ cells (max 25 V pack voltage) |
| Cell Voltage Accuracy | ±15 mV (3.2–4.6 V range, 0–60°C); enables precise SOC estimation and tight OV/UV margin control |
| Coulomb Counter Resolution | 8.44 µV LSB; supports high-precision capacity tracking with ±40 LSB integral nonlinearity |
| Protection Delay Range | OV/UV: 1–8 s programmable; OCD: 8–1280 ms; SCD: 35–520 µs - allows tuning for fast fault isolation vs. noise immunity |
| Supply Current (Normal Mode) | 130–195 µA (ADC + coulomb counter active); enables multi-year operation in always-on battery monitoring |
| SHIP Mode Current | 0.6–1.8 µA; reduces self-discharge during storage while retaining boot readiness via TS1 push-button |
| I²C Interface | 7-bit address 0x18; optional CRC checksum ensures robust communication in noisy motor-drive environments |
Pinout & Package
Package: 20-pin TSSOP (PW), 6.50 mm × 4.40 mm × 1.20 mm body size, lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DSG | Discharge FET driver output | Drives external low-side N-MOSFET gate; 10–14 V swing enables reliable turn-on across wide REGSRC range |
| CHG | Charge FET driver output | Independent low-side gate driver; allows asymmetric charge/discharge control for cell balancing safety |
| VSS | Chip ground reference | Common return for all analog sensing and digital I/O; must be star-connected to minimize ground bounce |
| SDA / SCL | I²C bidirectional data / clock | Supports standard/fast-mode I²C (up to 400 kHz); CRC option enhances reliability in EMI-prone power tool PCBs |
| TS1 | Thermistor #1 input | Internal 10 kΩ pull-up to VSS; requires 10 kΩ pull-down if unused to prevent floating input and false thermal alerts |
| CAP1 | Decoupling capacitor terminal | Connects 1 µF ceramic capacitor to VSS; stabilizes internal LDO and reduces switching noise coupling into ADC paths |
| REGOUT | LDO output | Fixed 2.5 V output (per device variant table); powers microcontroller or level-shifter without external regulator |
| REGSRC | LDO input source | Accepts 6–25 V input; powers internal circuitry and REGOUT; enables direct connection to battery stack |
| BAT | Battery high-side terminal | Primary supply input; absolute max 36 V; connects to top cell positive in 3–5S configuration |
| VC0–VC5 | Cell voltage sense inputs | VC0 = first cell negative; VC1–VC5 = successive cell positives; supports random connection topology |
| SRP / SRN | Current sense differential inputs | Measure voltage across sense resistor (RSNS); full-scale range ±200 mV with 8.44 µV LSB resolution |
| ALERT | Open-drain interrupt output | Asserts on protection event or register flag; double-function as override input for manual reset via pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-based protection engine | OV/UV/OCD/SCD triggers execute autonomously without firmware - eliminates MCU dependency for safety-critical shutdown |
| Random cell connection tolerance | Eliminates requirement for strict top-to-bottom cell wiring order; simplifies assembly and enables modular pack reconfiguration |
| Integrated cell balancing FETs | On-chip 70 mA per-cell balancing current (BQ76920 variant) reduces external component count and PCB area vs. discrete solutions |
| Ultra-low-power SHIP mode | 0.6–1.8 µA quiescent current with boot-ready state retained; enables >10-year shelf life for sealed battery modules |
| Dual thermistor support (TS1 + VC5X) | Enables simultaneous monitoring of pack surface and mid-stack temperature gradients - improves thermal runaway detection fidelity |
Applications
| e-Bikes & Pedelecs | Power Tools |
|---|---|
|
Use Scenario: 36-V lithium battery pack in Class 3 e-bike with regenerative braking and pedal-assist torque sensing. IC Role / Device Role / Timing Role: Primary AFE performing real-time cell voltage monitoring, pack current integration, and hardware-enforced discharge cutoff during overcurrent events. Use Value: Enables 1-s OV/UV response and 35–520 µs SCD detection - preventing MOSFET failure during motor stall or shorted brushless windings. |
Use Scenario: Cordless drill/driver battery with 5S Li-ion configuration, requiring high-current pulse handling (≥30 A) and thermal derating. IC Role / Device Role / Timing Role: Standalone protection controller managing CHG/DSG FETs, measuring cell imbalance during rest periods, and triggering thermal shutdown above 100°C. Use Value: Integrated 70 mA cell balancing corrects voltage drift between cells after repeated high-rate discharges, extending usable cycle life by ≥15%. |
| Battery Backup Units (BBUs) | Industrial Energy Storage Systems |
|
Use Scenario: Rack-mounted 24-V UPS for telecom base stations with 48-hour backup runtime and remote monitoring. IC Role / Device Role / Timing Role: Low-power monitoring node providing coulomb-counted SOC, cell-level health metrics, and alert-driven maintenance notifications via I²C. Use Value: SHIP mode (0.6 µA) preserves battery charge during extended grid-out periods while retaining instant wake-up capability via TS1 button. |
Use Scenario: Modular 48-V energy storage system for solar microgrids, deployed in outdoor enclosures with wide ambient temperature swings. IC Role / Device Role / Timing Role: Robust AFE operating from –40°C to +85°C, performing calibrated cell voltage readings every 250 ms and reporting thermal faults via ALERT pin. Use Value: ±25 mV cell voltage accuracy over full temperature range ensures reliable end-of-discharge detection even at –40°C, preventing deep cell damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7693006DBT | Supports 6–10 series cells (36 V max); uses 30-pin TSSOP; lower balancing current (5 mA); adds TS2/VC5X thermistor channel | Required for higher-voltage packs (e.g., 36-V e-scooters); not drop-in compatible due to pin count, package, and cell count mismatch | Select when scaling beyond 5S or needing dual thermistor inputs; requires PCB redesign and firmware adaptation |
| MAX17853GCM+ | 14-bit ADC; supports 14S; SPI interface; no integrated FET drivers; higher quiescent current (120 µA normal mode) | Used in automotive-grade 48-V mild-hybrid systems; lacks SHIP mode and random cell connection tolerance | Choose for SPI-based architectures or where external FET control is preferred; not suitable for ultra-low-power storage or flexible wiring |
Compared with BQ7692006PW, BQ7693006DBT extends voltage range but sacrifices balancing current and increases layout complexity, while MAX17853GCM+ offers higher cell count at the cost of power efficiency and wiring flexibility - making BQ7692006PW optimal for compact, low-power 3–5S industrial packs.
Availability
BQ7692006PW is available at Aetrix Electronics and suitable for e-bike battery management, cordless power tool packs, and industrial uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for BQ7692006PW 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 and embedded processing technologies, with decades of expertise in battery management ICs and high-reliability power solutions.
The BQ769x0 family was designed specifically for next-generation high-power battery packs in light electric vehicles and industrial energy storage, emphasizing hardware autonomy, ultra-low-power operation, and field-deployable robustness.
FAQ
What is the I²C address of the BQ7692006PW?
The BQ7692006PW is factory-configured with a fixed 7-bit I²C address of 0x18. This address is permanently stored in on-chip EEPROM and cannot be modified in the field. Communication requires standard I²C protocol with optional CRC checksum enabled for enhanced noise immunity in motor-driven applications where the BQ7692006PW is deployed.
Does the BQ7692006PW support thermistor-based temperature monitoring?
Yes, the BQ7692006PW supports one dedicated thermistor input (TS1) with internal 10 kΩ pull-up to VSS, compatible with standard 103AT NTC thermistors. It also provides VC5X as a second bias point for optional external thermistor use. The device measures thermistor voltage with its 14-bit ADC and converts values using lookup tables or linear approximation in the host MCU - no external ADC required for BQ7692006PW-based designs.
What protection functions are implemented in hardware on the BQ7692006PW?
The BQ7692006PW implements four hardware-based protections without MCU involvement: overvoltage (OV), undervoltage (UV), overcurrent in discharge (OCD), and short-circuit in discharge (SCD). Each has user-programmable thresholds and delay timers (e.g., OV delay options: 1/2/4/8 s). These functions drive the CHG and DSG pins directly to disable FETs, ensuring fail-safe response even if the host controller freezes - a core safety feature of the BQ7692006PW.
Can the BQ7692006PW be used in a 2-cell or 6-cell battery pack?
No - the BQ7692006PW is specified only for 3–5 series cell configurations, with absolute maximum BAT–VSS voltage of 36 V. Using it in a 2-cell pack risks violating minimum operating voltage requirements (6 V min), while a 6-cell pack exceeds its 25 V typical operating limit and risks damage due to overvoltage stress on internal cell sense circuitry. For 6S systems, Texas Instruments specifies the BQ7693006DBT instead of the BQ7692006PW.
What is the purpose of the SHIP mode in the BQ7692006PW?
SHIP mode reduces the BQ7692006PW's quiescent current to 0.6–1.8 µA while retaining boot readiness - enabling multi-year storage of battery packs without significant self-discharge. Activation occurs via software command or hardware reset; wake-up is triggered by a push-button signal applied to TS1. This feature is essential for BQ7692006PW-based products shipped in powered-off state, such as retail e-bike batteries or field-deployed energy storage modules.
BQ7692006PW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 3 ~ 5
- Fault Protection:
- Over Current, Over/Under Voltage, Short Circuit
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
BQ7692006PW FAQ
1.How can I place an order for BQ7692006PW through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7692006PW 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 BQ7692006PW reliable?
The price and inventory of BQ7692006PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7692006PW is usually 5 days.
3.What payment methods are accepted for BQ7692006PW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7692006PW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7692006PW?
BQ7692006PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7692006PW 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 BQ7692006PW?
For technical support, including BQ7692006PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7692006PW requirements.
6.How does Aetrix verify that BQ7692006PW is sourced from the original manufacturer or authorized distributors?
All BQ7692006PW 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 BQ7692006PW meets industry standards.
7.What is the process for return or replacement of BQ7692006PW?
All BQ7692006PW units undergo pre-shipment inspection (PSI). If there is an issue with BQ7692006PW, 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 BQ7692006PW part is unused and in its original packaging.
Return procedure for BQ7692006PW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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