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Texas Instruments BQ2060A-E619DBQ
- Part No.:
- BQ2060A-E619DBQ
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
BQ2060A-E619DBQ.pdf
- Description:
- IC SBS-COMPL GAS GAUGE 28-QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:780
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Product details
Overview
BQ2060A-E619DBQ from Texas Instruments is an SBS v1.1-compliant gas gauge IC for NiCd, NiMH, Li-ion, and lead-acid battery packs. It delivers 15-bit resolution for voltage, temperature, and current measurements; uses a voltage-to-frequency converter with <16 µV calibrated offset; supports SMBus 2-wire and HDQ16 1-wire interfaces; and drives a 4- or 5-segment LED display for remaining capacity indication in portable medical devices and industrial handhelds.
For engineers reviewing the BQ2060A-E619DBQ datasheet, BQ2060A-E619DBQ pinout, BQ2060A-E619DBQ application, or BQ2060A-E619DBQ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with functional differences, and supply support for production deployment in battery management systems requiring accurate state-of-charge tracking across chemistries.
Technical Context
The BQ2060A-E619DBQ implements dual measurement paths: a fully differential voltage-to-frequency converter (VFC) for charge/discharge flow counting with auto-offset calibration down to 6.25 µVh, and a sigma-delta ADC for voltage (VCELL1–VCELL4), temperature (TS), and current (SRC) sampling every 2–2.5 s. It integrates self-discharge compensation using programmable EEPROM-stored rate factors adjusted per ±10°C intervals.
Its control architecture includes dedicated FET drivers (CFC/DFC) for Li-ion protection circuits, cell voltage divider control (CVON), thermistor bias switching (THON), and REG output regulating VCC via external JFET. Communication occurs over SMBus v1.1 (with PEC) or HDQ16, supporting full SBS register mapping including RemainingCapacity(), FullChargeCapacity(), and individual cell voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.7 V - Enables direct operation from 1–3 Li-ion cells without external LDO. |
| VFC Offset Error | <16 µV after calibration - Ensures sub-0.1% charge-counting error under typical sense-resistor conditions. |
| ADC Resolution | 15-bit - Delivers ±0.03% full-scale accuracy for voltage, current, and temperature reporting. |
| SMBus Frequency | 10–100 kHz - Compatible with standard system management bus controllers without clock stretching conflicts. |
| Operating Temp | –20°C to +70°C - Validated for commercial-grade portable equipment and industrial battery packs. |
| LED Drive Outputs | LED1–LED5, 5 mA sink capability - Directly drives common-anode LED segments without external transistors. |
| Cell Monitoring | 4-cell input (VCELL1–VCELL4), max 1.25 V input - Supports up to 4-series Li-ion configurations with external resistor dividers. |
Pinout & Package
28-pin 150-mil (3.8-mm) SSOP package with exposed thermal pad (not electrically connected). Pin layout optimized for battery pack integration with segregated analog sensing, digital I/O, and FET control domains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HDQ16 | 1-wire bidirectional I/O | Open-drain interface for low-pin-count host connection; supports device enumeration and register access without clock line. |
| SMBC / SMBD | SMBus clock/data | Open-drain 2-wire interface compliant with SMBus v1.1; includes packet error checking (PEC) support. |
| SR1 / SR2 | Current sense differential inputs | Accepts ±250 mV differential signal across series sense resistor; enables high-accuracy coulomb counting. |
| VCELL1–VCELL4 | Individual cell voltage inputs | High-impedance inputs (5 MΩ) accepting ≤1.25 V; used with external dividers to monitor up to 4-series cells. |
| CFC / DFC | Charge/Discharge FET control | Active-low outputs driving external N-channel MOSFETs in Li-ion protection circuitry. |
| CVON / THON | Cell voltage/thermistor switch control | Enable FETs to connect voltage dividers or thermistor bias only during measurement-reducing standby current. |
| REG | JFET gate drive output | Regulates internal VCC from battery stack; controls external n-JFET to maintain stable 3.3 V supply. |
| RBI | Register backup input | Accepts capacitor or auxiliary battery to retain register state during main supply brownout or removal. |
Key Features
| Feature | Design Value |
|---|---|
| Self-discharge compensation | Programmable per-temperature-rate algorithm (e.g., 2× rate at +35°C vs. 25°C) applied to RemainingCapacity() every ~6750 s at 35°C for 2.5%/day base rate. |
| Capacity learning | Updates FullChargeCapacity() automatically after qualified discharge (RM ≥ FCC − Near Full × 2 → EDV2) with constraints on charge activity, temperature, and overload. |
| Voltage-based RM correction | Applies three end-of-discharge thresholds (EDV0/EDV1/EDV2) to correct RemainingCapacity() counter in real time-preventing drift from aging or load variance. |
| Dual-interface flexibility | Simultaneous SMBus v1.1 and HDQ16 support allows selection based on host controller capability-no hardware redesign needed for either protocol. |
| EEPROM-configurable operation | All critical parameters (chemistry, self-discharge rate, EDV thresholds, cell divider ratios) stored in external EEPROM-enabling field-programmable battery pack customization. |
Applications
| Medical Portable Monitor | Industrial Handheld Scanner |
|---|---|
|
Use Scenario: Battery-powered ECG monitor operating 8+ hours per charge with runtime prediction and low-battery alerts. IC Role / Device Role / Timing Role: Gas gauge IC performing real-time coulomb counting, self-discharge compensation, and LED-based capacity indication. Use Value: Maintains ±2% state-of-charge accuracy over 500 cycles by combining VFC-based charge integration with voltage-threshold corrections (EDV2) and temperature-compensated self-discharge modeling. |
Use Scenario: Rugged barcode scanner used in warehouse logistics with intermittent high-current pulses and extended shelf life between deployments. IC Role / Device Role / Timing Role: Smart battery manager handling charge/discharge FET control, individual cell monitoring, and SMBus communication with host MCU. Use Value: Prevents false "full" indications during storage by applying dynamic self-discharge adjustment-reducing capacity drift to <1% per month at 25°C. |
| Lithium-ion Power Tool Pack | Emergency Lighting Backup System |
|
Use Scenario: 18-V cordless drill pack with 4-series Li-ion cells requiring cell balancing supervision and overcurrent protection coordination. IC Role / Device Role / Timing Role: Primary gas gauge and pack supervisor providing cell voltage readback, CFC/DFC control signals, and thermistor-based thermal cutoff coordination. Use Value: Enables safe fast-charging by detecting cell imbalance via VCELL1–VCELL4 readings and triggering charge suspension if ΔV > 50 mV between any two cells. |
Use Scenario: UL924-compliant emergency exit sign with sealed lead-acid battery requiring long-term capacity retention and runtime estimation during grid failure. IC Role / Device Role / Timing Role: Chemistry-agnostic fuel gauge supporting lead-acid profiles, temperature-compensated voltage thresholds, and LED-based status indication. Use Value: Extends service life by halving self-discharge estimation rate below 20°C-matching actual Pb-acid behavior and avoiding premature "replace battery" warnings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gas gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ2084DBTR | Integrated 12-bit ADC, no VFC; supports SMBus only; 32-pin VQFN; higher quiescent current (350 µA) | Lacks VFC-based ultra-low-offset charge counting; not suitable where <16 µV offset tolerance is required for precision NiMH/NiCd gauging. | Select BQ2084DBTR only when SMBus-only interface, smaller footprint, and lower cost outweigh need for VFC-level accuracy and HDQ16 fallback. |
| BQ20Z75-V165DBTR | Enhanced SBS v1.1 compliance; integrated 16-bit delta-sigma ADC; supports SHA-1 authentication; 40-pin TSSOP | Includes secure authentication and enhanced safety registers; requires updated EEPROM programming flow and firmware validation. | Choose BQ20Z75-V165DBTR when security-critical applications (e.g., OEM battery certification) demand cryptographic authentication and extended safety diagnostics. |
Compared with BQ2060A-E619DBQ, BQ2084DBTR trades VFC accuracy and dual-interface flexibility for compact packaging and lower BOM count, while BQ20Z75-V165DBTR adds security and resolution at the cost of layout complexity and qualification effort-making BQ2060A-E619DBQ optimal for cost-sensitive, multi-chemistry industrial packs needing proven reliability and field-serviceable configuration.
Availability
BQ2060A-E619DBQ is available at Aetrix Electronics and suitable for medical portable monitors, industrial handheld scanners, lithium-ion power tool packs, and emergency lighting backup systems requiring stable component supply, long-lifecycle support, and traceable sourcing for ISO 13485 and IEC 62366 environments.
Supply support for BQ2060A-E619DBQ 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
The BQ2060A-E619DBQ belongs to TI's Smart Battery Manager product line, designed specifically for embedded fuel gauging in rechargeable battery packs across consumer, medical, and industrial applications-prioritizing accuracy, multi-chemistry support, and system-level interoperability with SBS-compliant hosts.
FAQ
What communication protocols does the BQ2060A-E619DBQ support?
The BQ2060A-E619DBQ supports both SMBus v1.1 (2-wire with PEC) and HDQ16 (1-wire) protocols. It implements full SBS register mapping-including RemainingCapacity(), FullChargeCapacity(), and individual cell voltages-on both interfaces. The HDQ16 interface allows single-pin host connection, while SMBus enables multi-drop system management bus integration. Both protocols are validated per TI SLUS500D specification.
How does the BQ2060A-E619DBQ achieve high-accuracy charge measurement?
The BQ2060A-E619DBQ achieves high-accuracy charge measurement using a voltage-to-frequency converter (VFC) with auto-calibration that reduces offset error to less than 16 µV after calibration. It integrates charge/discharge flow across SR1/SR2 pins with 6.25 µVh fundamental resolution and applies temperature- and rate-compensated corrections stored in external EEPROM. This architecture delivers ±0.1% coulomb counting accuracy under typical operating conditions.
Can the BQ2060A-E619DBQ monitor individual cell voltages in a Li-ion pack?
Yes, the BQ2060A-E619DBQ monitors up to four individual cell voltages via dedicated VCELL1–VCELL4 inputs. Each input accepts ≤1.25 V referenced to VSS and features 5 MΩ input impedance. External precision resistor dividers scale cell voltages to fit this range, and the CVON pin controls FET switches to connect dividers only during measurement-minimizing leakage current. Measured values are accessible via SMBus/HDQ16 registers VCELL1–VCELL4.
What is the role of the REG pin on the BQ2060A-E619DBQ?
The REG pin on the BQ2060A-E619DBQ drives the gate of an external n-channel JFET to regulate the IC's VCC supply from the battery stack. It maintains a stable 3.3 V output (typical) across battery voltage ranges of 3.1 V to 3.5 V in normal mode. This eliminates the need for an external LDO and ensures consistent operation even as the pack voltage declines-critical for maintaining measurement accuracy during deep discharge.
Does the BQ2060A-E619DBQ support self-discharge compensation?
Yes, the BQ2060A-E619DBQ supports programmable self-discharge compensation using temperature-dependent algorithms stored in external EEPROM. It adjusts RemainingCapacity() at intervals scaled to ambient temperature-e.g., halving the update rate below 20°C and doubling it above 30°C-while applying fixed 0.39% reductions per interval. This matches real-world self-discharge behavior across NiCd, NiMH, Li-ion, and lead-acid chemistries.
BQ2060A-E619DBQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- -
- Fault Protection:
- -
- Interface:
- SMBus
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SSOP
BQ2060A-E619DBQ FAQ
1.How can I place an order for BQ2060A-E619DBQ through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2060A-E619DBQ 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 BQ2060A-E619DBQ reliable?
The price and inventory of BQ2060A-E619DBQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2060A-E619DBQ is usually 5 days.
3.What payment methods are accepted for BQ2060A-E619DBQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2060A-E619DBQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2060A-E619DBQ?
BQ2060A-E619DBQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2060A-E619DBQ 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 BQ2060A-E619DBQ?
For technical support, including BQ2060A-E619DBQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2060A-E619DBQ requirements.
6.How does Aetrix verify that BQ2060A-E619DBQ is sourced from the original manufacturer or authorized distributors?
All BQ2060A-E619DBQ 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 BQ2060A-E619DBQ meets industry standards.
7.What is the process for return or replacement of BQ2060A-E619DBQ?
All BQ2060A-E619DBQ units undergo pre-shipment inspection (PSI). If there is an issue with BQ2060A-E619DBQ, 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 BQ2060A-E619DBQ part is unused and in its original packaging.
Return procedure for BQ2060A-E619DBQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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