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Texas Instruments BQ7692003PWR
- Part No.:
- BQ7692003PWR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ7692003PWR.pdf
- Description:
- IC BATT MON MULTI 3-5C 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,472
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Product details
Overview
BQ7692003PWR from Texas Instruments is a 3- to 5-series Li-ion and LiFePO₄ battery monitor AFE with integrated charge/discharge FET drivers, 14-bit cell voltage ADC (±10 mV accuracy at 25°C), coulomb counter, and hardware overvoltage/undervoltage/overcurrent protection - deployed in e-bike battery packs requiring precise per-cell monitoring and autonomous fault response.
For engineers reviewing the BQ7692003PWR datasheet, BQ7692003PWR pinout, BQ7692003PWR application, or BQ7692003PWR equivalent, this device delivers I²C-compatible digital interface with CRC option, 2.5-V LDO output, random cell connection tolerance, and SHIP mode for ultra-low-power storage - critical for high-reliability portable power systems.
Technical Context
The BQ7692003PWR implements a dedicated analog front-end architecture with separate 14-bit ADCs for cell voltage/temperature and a 16-bit coulomb counter ADC, enabling simultaneous high-resolution measurement of up to five series cells, pack current, and three thermistor inputs. Its protection logic executes independent hardware-triggered responses for OV, UV, OCD, and SCD without host intervention.
It supports configurable delay timers (1/2/4/8 s for OV/UV; 8–1280 ms for OCD; 35–520 µs for SCD), programmable thresholds via register map, and direct control of external N-channel FETs through CHG/DSG outputs with 10–14 V drive capability and 200–250 µs rise time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Support | 3–5 series Li-ion/LiFePO₄ cells - matches typical 12–18 V e-bike and power tool packs. |
| Cell Voltage Accuracy | ±10 mV (25°C, 3.6–4.3 V range) - enables tight SOC estimation and cell balancing decisions. |
| Coulomb Counter Input Range | ±200 mV full-scale - supports common sense-resistor values (e.g., 5 mΩ yields ±40 A range). |
| Protection Response Delay | OCD: 8–1280 ms selectable; SCD: 35–520 µs - balances noise immunity and fault containment speed. |
| Supply Current (Normal Mode) | 130–195 µA (ADC + CC enabled) - enables multi-year operation in always-on battery management. |
| LDO Output | 2.5 V @ REGOUT - powers microcontroller or sensor peripherals directly from battery input. |
| Operating Temperature | –40°C to +85°C - qualified for outdoor and industrial battery environments. |
Pinout & Package
Package: 20-pin TSSOP (6.50 mm × 4.40 mm × 1.20 mm), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DSG | Discharge FET driver output | Active-low open-drain output driving external N-ch discharge FET gate; 10–14 V drive capability. |
| CHG | Charge FET driver output | Active-low open-drain output driving external N-ch charge FET gate; same drive specs as DSG. |
| VSS | Chip ground reference | Primary analog/digital ground return; must be low-impedance connection to battery negative. |
| SDA / SCL | I²C bidirectional data / clock | 3.3-V tolerant interface with optional CRC; supports standard-mode (100 kHz) and fast-mode (400 kHz) timing. |
| VC0–VC5 | Cell voltage sense inputs | Differential inputs measuring 1st cell negative (VC0) through 5th cell positive (VC5); tolerate ±9 V differential. |
| SRP / SRN | Current sense inputs | High-side current sense pair referenced to VSS; accepts ±200 mV differential for coulomb counting. |
| TS1 | Thermistor #1 input | Analog input for 10-kΩ 103AT thermistor; internal bias enables direct temperature readout. |
| REGSRC / REGOUT | LDO input / output | REGSRC accepts 6–25 V battery input; REGOUT delivers regulated 2.5 V (±2%) for system peripherals. |
| ALERT | Interrupt & override I/O | Open-drain alert output signaling protection events; also accepts override pulse to reset latched faults. |
Key Features
| Feature | Design Value |
|---|---|
| Pure digital interface with CRC | Eliminates need for external level shifters or checksum validation circuitry; reduces BOM and layout complexity. |
| Integrated cell balancing FETs | Enables passive balancing per cell up to 70 mA - no external MOSFETs or timing components required. |
| No EEPROM programming needed | Factory-configured I²C address (0x08) and LDO voltage (2.5 V); ready-to-use out-of-box with zero firmware setup. |
| Random cell connection tolerance | Accepts non-sequential cell interconnect wiring - simplifies mechanical assembly and reduces harness routing constraints. |
| SHIP mode ultra-low power state | 0.6–1.8 µA quiescent current - extends shelf life of pre-charged battery packs during logistics and storage. |
Applications
| Light Electric Vehicles (eBikes) | Power Tools |
|---|---|
Use Scenario: Integrated into 36-V, 5S lithium-ion battery packs for Class 1/2 e-bikes with pedal-assist and throttle control. IC Role / Device Role / Timing Role: Primary AFE performing real-time cell voltage monitoring, pack current integration, thermal supervision, and autonomous overcurrent shutdown. Use Value: Enables accurate state-of-charge estimation and prevents thermal runaway during high-current acceleration or regenerative braking. | Use Scenario: Used in cordless drill and impact driver battery packs (18–20 V, 5S Li-ion) with aggressive discharge profiles. IC Role / Device Role / Timing Role: Hardware-level protector triggering sub-100 µs short-circuit response and 1–8 s overvoltage lockout without MCU involvement. Use Value: Guarantees tool safety during stall conditions while maintaining runtime via precise coulomb counting and cell balancing. |
| Battery Backup Units (BBUs) | Industrial Battery Packs (≥10S) |
Use Scenario: Deployed in 24-V UPS modules for telecom edge equipment requiring >5-year field reliability. IC Role / Device Role / Timing Role: Standalone monitor managing cell balancing, temperature compensation, and graceful shutdown on AC loss. Use Value: Extends backup runtime by 8–12% through 14-bit cell voltage resolution and adaptive balancing algorithms. | Use Scenario: Embedded in custom 48-V industrial battery systems for AGV navigation and robotic arms. IC Role / Device Role / Timing Role: Core AFE interfacing with host MCU via I²C to report cell voltages, die temperature, and pack current for predictive maintenance. Use Value: Reduces firmware development effort via register-based configuration and eliminates need for external ADCs or protection ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7692001PWR | Same 20-TSSOP package and 3–5S support, but includes I²C CRC enablement (BQ7692003PWR has CRC enabled; BQ7692001PWR does not). | Used where CRC integrity is not required, reducing software overhead in resource-constrained hosts. | Select BQ7692001PWR only if CRC validation is omitted from system firmware design. |
| BQ7693003DBTR | 30-pin TSSOP, supports 6–10S cells, 3.3-V LDO, and two thermistor inputs - physically larger and higher-voltage rated. | Required for 36-V+ packs (e.g., e-scooters, larger power tools) needing extended cell count and dual-thermistor redundancy. | Choose BQ7693003DBTR when scaling beyond 5S or requiring 3.3-V LDO output instead of 2.5 V. |
Compared with BQ7692001PWR, BQ7692003PWR adds mandatory CRC for I²C transaction integrity; compared with BQ7693003DBTR, it offers smaller footprint and lower cost for 5S-limited designs but lacks extended cell support and second thermistor channel.
Availability
BQ7692003PWR is available at Aetrix Electronics and suitable for light electric vehicles, cordless power tools, and battery backup units requiring stable component supply, long-term lifecycle support, and automotive-grade reliability under thermal stress.
Supply support for BQ7692003PWR 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 and power electronics.
The BQ769x0 product line targets high-reliability, high-power portable energy systems - designed specifically for next-generation e-mobility, industrial tools, and uninterruptible power solutions demanding autonomous protection and precision monitoring.
FAQ
What is the I²C address of the BQ7692003PWR?
The BQ7692003PWR is factory-configured with a fixed 7-bit I²C address of 0x08. This address is permanently stored in on-chip memory and cannot be modified in the field. The device supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C communication with optional CRC byte for enhanced data integrity. No external pull-up resistors or address pins are required for basic operation of the BQ7692003PWR.
Does the BQ7692003PWR support thermistor-based temperature monitoring?
Yes, the BQ7692003PWR supports one thermistor input (TS1) using a 10-kΩ 103AT NTC thermistor. It provides internal biasing and 14-bit ADC conversion for direct temperature readout, with accuracy specified across –40°C to +85°C. The TS1 pin must be pulled down to VSS with a 10-kΩ resistor if unused. Unlike higher-series variants (e.g., BQ76930/BQ76940), the BQ7692003PWR does not support multiple thermistor channels - only TS1 is implemented in the 20-pin TSSOP package.
What protection features are implemented in hardware on the BQ7692003PWR?
The BQ7692003PWR implements four hardware-based protections: overvoltage (OV), undervoltage (UV), overcurrent in discharge (OCD), and short circuit in discharge (SCD). All trigger autonomously without host MCU intervention and drive the CHG/DSG pins to disable FETs. OV/UV delays are configurable in 1/2/4/8 s steps; OCD delay ranges from 8–1280 ms; SCD responds within 35–520 µs. Secondary protector fault detection is also included, enhancing system-level safety for the BQ7692003PWR.
Can the BQ7692003PWR perform cell balancing, and what is its current capability?
Yes, the BQ7692003PWR integrates passive cell balancing FETs capable of up to 70 mA per cell. Balancing is controlled via register writes and occurs only when the host enables it and cell voltage exceeds the configured threshold. The balancing current is internally limited and does not require external current-setting resistors. This feature allows equalization of state-of-charge across all five monitored cells, improving pack longevity and usable capacity - a key capability of the BQ7692003PWR in multi-cell applications.
What is the purpose of the SHIP mode in the BQ7692003PWR?
SHIP mode places the BQ7692003PWR into an ultra-low-power shutdown state consuming only 0.6–1.8 µA, ideal for long-term storage of assembled battery packs before deployment. In this mode, most internal blocks (ADCs, coulomb counter, LDO) are disabled, retaining only boot detection and minimal wake-up circuitry. Activation requires a specific voltage pulse on TS1, and exit restores full functionality after a 10-ms tBOOTREADY delay. SHIP mode is a critical power-saving feature unique to the BQ7692003PWR family for logistics and inventory management.
BQ7692003PWR 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
BQ7692003PWR FAQ
1.How can I place an order for BQ7692003PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7692003PWR 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 BQ7692003PWR reliable?
The price and inventory of BQ7692003PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7692003PWR is usually 5 days.
3.What payment methods are accepted for BQ7692003PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7692003PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7692003PWR?
BQ7692003PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7692003PWR 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 BQ7692003PWR?
For technical support, including BQ7692003PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7692003PWR requirements.
6.How does Aetrix verify that BQ7692003PWR is sourced from the original manufacturer or authorized distributors?
All BQ7692003PWR 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 BQ7692003PWR meets industry standards.
7.What is the process for return or replacement of BQ7692003PWR?
All BQ7692003PWR units undergo pre-shipment inspection (PSI). If there is an issue with BQ7692003PWR, 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 BQ7692003PWR part is unused and in its original packaging.
Return procedure for BQ7692003PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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