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Texas Instruments BQ7692000PWR
- Part No.:
- BQ7692000PWR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ7692000PWR.pdf
- Description:
- IC BATT MON MULTI 3-5C 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,406
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Product details
Overview
BQ7692000PWR from Texas Instruments is a 3- to 5-series Li-ion/LiFePO₄ battery monitor AFE with integrated charge/discharge FET drivers, 14-bit cell voltage ADC (±10 mV accuracy at 25°C), coulomb counting current measurement, and hardware-based OV/UV/OCD/SCD protection. It supports 18-V battery packs in light electric vehicles and power tools.
For engineers reviewing the BQ7692000PWR datasheet, BQ7692000PWR pinout, BQ7692000PWR application, or BQ7692000PWR equivalent, key selection criteria include its 20-pin TSSOP package, 2.5-V LDO output, I²C interface with optional CRC, 50-mA internal cell balancing current, and random cell connection tolerance for simplified pack assembly.
Technical Context
The BQ7692000PWR implements a dedicated analog front-end architecture with dual independent ADCs: one for cell voltage/die temperature/thermistor readings (14-bit, ±10 mV @ 25°C), and another for pack current sensing via SRP/SRN inputs (16-bit coulomb counter, ±200 mV range). Its protection logic executes in hardware without host intervention.
It features configurable overvoltage (OV) and undervoltage (UV) thresholds (16-LSB step size), programmable delay timers (1/2/4/8 s for OV, 1/4/8/16 s for UV), and discharge short-circuit detection with sub-105 µs response. The device enters ultra-low-power SHIP mode (<1.8 µA) and supports boot via TS1 push-button.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Support | 3–5 series Li-ion or LiFePO₄ cells; enables 12–18 V nominal battery packs. |
| Cell Voltage Accuracy | ±10 mV at 25°C (3.6–4.3 V range); ensures precise state-of-charge estimation. |
| Current Sensing Range | ±200 mV differential input (SRP–SRN); supports shunt-based pack current monitoring. |
| Integrated Balancing Current | Up to 50 mA per cell; enables active cell voltage equalization without external FETs. |
| LDO Output | 2.5 V @ REGOUT; powers external microcontroller or sensors directly from battery supply. |
| Supply Current (Normal Mode) | 130–195 µA with ADC and coulomb counter enabled; optimized for long-life portable systems. |
| I²C Interface | 7-bit address 0x08, CRC option supported; simplifies host communication and data integrity. |
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 low-side N-channel MOSFET gate; supports up to 16 V output swing. |
| CHG | Charge FET driver output | Drives low-side N-channel MOSFET gate; complements DSG for bidirectional FET control. |
| VSS | Chip ground reference | Primary return path for all analog and digital circuitry; must be low-impedance. |
| SDA / SCL | I²C bidirectional data / clock | Standard-compliant interface for register read/write; supports CRC for error detection. |
| VC0–VC5 | Cell voltage sense inputs | Differential inputs for 1st cell negative (VC0) through 5th cell positive (VC5); tolerate random connection order. |
| SRP / SRN | Current sense differential inputs | Measure pack current via shunt resistor; SRP connects to shunt high side, SRN to low side. |
| REGSRC / REGOUT | LDO input / regulated output | REGSRC accepts 6–25 V battery input; REGOUT delivers stable 2.5 V for auxiliary circuitry. |
| TS1 | Thermistor #1 input | Accepts 10-kΩ 103AT thermistor; used for cell temperature monitoring or boot trigger. |
| ALERT | Open-drain interrupt output | Asserts on protection events (OV/UV/OCD/SCD); also serves as override input during boot. |
| BAT | High-voltage battery terminal | Connects to top of battery stack; supports up to 36 V absolute max (BAT–VSS). |
Key Features
| Feature | Design Value |
|---|---|
| Pure digital interface | Eliminates need for external ADCs or signal conditioning; reduces BOM count and layout complexity. |
| Hardware-based protection | OV/UV/OCD/SCD triggers execute autonomously-no firmware dependency or latency from host MCU. |
| Integrated cell balancing FETs | 50-mA per-cell balancing eliminates external balancing transistors and associated gate-drive circuitry. |
| No EEPROM programming required | Factory-configured I²C address (0x08) and LDO voltage (2.5 V); ready-to-use out of box. |
| Random cell connection tolerance | Enables flexible PCB layout and field-repairable pack wiring without strict cell-order constraints. |
Applications
| eBike Battery Pack | Power Tool Battery Pack |
|---|---|
|
Use Scenario: 36-V, 10-Ah Li-ion pack for mid-drive eBike with regenerative braking and thermal management. IC Role / Device Role / Timing Role: Primary AFE for real-time cell voltage, pack current, and die temperature monitoring; triggers hardware FET cutoff on overcurrent or cell imbalance. Use Value: Enables accurate SOC/SOH estimation and failsafe shutdown within 105 µs of short-circuit detection-critical for rider safety and motor controller coordination. |
Use Scenario: 18-V cordless drill pack with fast-charge capability and multi-level thermal derating. IC Role / Device Role / Timing Role: Monitors individual cell voltages during high-pulse discharge (up to 30 A), manages balancing during rest periods, and regulates charge/discharge FETs. Use Value: 50-mA internal balancing maintains ≤15 mV inter-cell variance after 500 cycles, extending usable pack life by >20% versus passive-only solutions. |
| UPS Backup Module | Industrial Energy Storage Unit |
|
Use Scenario: 12–18 V DC backup unit for telecom base stations with 8-hour runtime and remote monitoring. IC Role / Device Role / Timing Role: Provides coulomb-counted capacity tracking, low-power SHIP mode (<1.8 µA), and alert-driven wake-up for host MCU. Use Value: SHIP mode extends shelf life to >18 months without maintenance charging-reducing logistics overhead and field failures. |
Use Scenario: Rack-mounted 48-V LiFePO₄ module for solar microgrid storage with CAN-connected BMS master. IC Role / Device Role / Timing Role: Acts as slave AFE node measuring 5-series cells; communicates via I²C to central controller handling CAN protocol stack. Use Value: 2.5-V REGOUT powers isolated level-shifters and CAN transceivers locally-eliminating separate bias rails and improving noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7693000DBTR | Supports 6–10 series cells; larger 30-pin TSSOP; 5-mA balancing current; adds VC5X/TS2 pins. | Required for 36-V+ packs; not pin-compatible; needs revised PCB layout and firmware register mapping. | Select when scaling beyond 5-series cells-retains same protection architecture and I²C command set. |
| MAX17521GWE+ | 3–6 series support; 12-bit ADC (±15 mV); no integrated balancing FETs; requires external charge/discharge drivers. | Suitable for cost-sensitive designs where external FETs are already present; lacks random cell connection tolerance. | Choose if balancing is handled externally and higher voltage accuracy is not critical-reduces component count but increases design effort. |
Compared with BQ7692000PWR, BQ7693000DBTR scales voltage range but sacrifices balancing current and pin compatibility, while MAX17521GWE+ reduces integration and precision to lower BOM cost-making BQ7692000PWR optimal for compact 3–5S Li-ion packs requiring autonomous protection and minimal external components.
Availability
BQ7692000PWR is available at Aetrix Electronics and suitable for light electric vehicles, cordless power tools, and uninterruptible power supply modules requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for BQ7692000PWR 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 high-power, safety-critical battery packs in light EVs and industrial energy storage-emphasizing hardware autonomy, low quiescent current, and robust fault coverage.
FAQ
What is the maximum battery voltage the BQ7692000PWR can monitor?
The BQ7692000PWR supports up to 5-series Li-ion cells, with an absolute maximum BAT–VSS rating of 36 V. Its recommended operating range is 6–25 V, making it ideal for nominal 12–18 V battery packs. Exceeding 36 V risks permanent damage per Absolute Maximum Ratings.
Does the BQ7692000PWR require external EEPROM or configuration programming?
No. The BQ7692000PWR is factory-configured with I²C address 0x08 and 2.5-V LDO output-no EEPROM programming or initialization sequence is needed. All protection thresholds and timing parameters are set via I²C registers during normal operation.
Can the BQ7692000PWR balance cells without external components?
Yes. The BQ7692000PWR integrates internal FETs capable of up to 50 mA per-cell balancing current. No external transistors, resistors, or drivers are required-only the cell sense connections (VC0–VC5) and a bypass capacitor on CAP1.
How does the BQ7692000PWR handle thermistor inputs?
The BQ7692000PWR supports one 10-kΩ 103AT thermistor on TS1, with internal biasing and 14-bit ADC conversion. If unused, TS1 must be pulled down to VSS with a 10-kΩ resistor. It does not support multiple thermistors-unlike BQ76930/BQ76940 variants.
What protection functions are implemented in hardware versus firmware on the BQ7692000PWR?
All core protections-overvoltage, undervoltage, overcurrent in discharge, and short-circuit in discharge-are executed autonomously in hardware. No host MCU involvement is required for trip execution, ensuring deterministic response times (e.g., <105 µs for SCD) even during firmware hangs or resets.
BQ7692000PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
BQ7692000PWR FAQ
1.How can I place an order for BQ7692000PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7692000PWR 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 BQ7692000PWR reliable?
The price and inventory of BQ7692000PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7692000PWR is usually 5 days.
3.What payment methods are accepted for BQ7692000PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7692000PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7692000PWR?
BQ7692000PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7692000PWR 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 BQ7692000PWR?
For technical support, including BQ7692000PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7692000PWR requirements.
6.How does Aetrix verify that BQ7692000PWR is sourced from the original manufacturer or authorized distributors?
All BQ7692000PWR 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 BQ7692000PWR meets industry standards.
7.What is the process for return or replacement of BQ7692000PWR?
All BQ7692000PWR units undergo pre-shipment inspection (PSI). If there is an issue with BQ7692000PWR, 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 BQ7692000PWR part is unused and in its original packaging.
Return procedure for BQ7692000PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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