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Texas Instruments BQ2060SS-E411TRG4
- Part No.:
- BQ2060SS-E411TRG4
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
BQ2060SS-E411TRG4.pdf
- Description:
- IC GAS GAUGE MULTI 28SSOP/QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,982
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Product details
Overview
BQ2060SS-E411TRG4 from Texas Instruments is a SBS v1.1-compliant smart battery gas gauge IC for NiCd, NiMH, Li-ion, and lead-acid chemistries. It delivers 15-bit resolution voltage/temperature/current measurement, <16 µV V-to-F converter offset, LED-based capacity display (4–5 segments), and SMBus/HDQ16 dual-interface support - deployed in portable medical devices, industrial handhelds, and battery-pack monitoring systems.
For engineers reviewing the BQ2060SS-E411TRG4 datasheet, BQ2060SS-E411TRG4 pinout, BQ2060SS-E411TRG4 application, or BQ2060SS-E411TRG4 equivalent, key selection considerations include its 28-pin SSOP package, integrated cell-voltage monitoring (VCELL1–VCELL4), discharge/charge FET control (DFC/CFC), thermistor-based temperature compensation, and EEPROM-configurable self-discharge learning algorithm.
Technical Context
The BQ2060SS-E411TRG4 implements a fully differential, dynamically balanced voltage-to-frequency converter (VFC) for charge/discharge counting with auto-calibration down to 6.25 µVh and <16 µV offset correction. It pairs this with a sigma-delta ADC for simultaneous 15-bit measurements of individual cell voltages (up to 4 cells), pack temperature (via NTC thermistor on TS), and current (via SR1/SR2 sense resistor).
Its dual-protocol interface supports SMBus v1.1 (SMBC/SMBD) with PEC and Benchmarq HDQ16 (HDQ16), enabling communication with host systems and external EEPROM for configuration storage. Control outputs CVON and THON manage external FETs to connect voltage dividers and thermistor bias only during measurement cycles, reducing standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VFC Offset | <16 µV after calibration - enables accurate low-current integration over long discharge cycles |
| ADC Resolution | 15-bit - provides precise voltage (mV), temperature (0.1°K), and current (mA) reporting per SBS register map |
| Cell Monitoring | VCELL1–VCELL4 inputs - supports up to 4-series Li-ion cells with 1.25 V max input and programmable divider ratios |
| Interface Protocols | SMBus v1.1 + HDQ16 - ensures compatibility with Smart Battery System hosts and legacy single-wire systems |
| Operating Current | 180–235 µA - enables multi-year runtime in battery-powered embedded packs without compromising measurement frequency |
| Temperature Range | –20°C to +70°C - validated for commercial portable equipment and industrial battery management applications |
| Supply Voltage | 2.7 V to 3.7 V - matches typical Li-ion and multi-cell NiMH pack operating ranges |
Pinout & Package
28-pin 150-mil SSOP (Shrink Small Outline Package) with exposed pad; RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HDQ16 | 1-Wire bidirectional data I/O | Enables single-pin communication with host using Benchmarq HDQ protocol; open-drain, requires pull-up |
| ESCL / ESDA | EEPROM serial clock/data | Drives external configuration EEPROM (e.g., 24C02); supports address/data transfer for chemistry, calibration, and thresholds |
| REG | JFET gate control output | Regulates VCC from battery stack via external n-JFET; maintains stable 3.3 V supply under varying cell voltage |
| VOUT | EEPROM power supply | Provides regulated 3.3 V to external EEPROM; 5 mA source capability ensures reliable write operations |
| DFC / CFC | Discharge/Charge FET control | Direct logic-level outputs to drive external MOSFETs in Li-ion protection circuitry; open-drain, 0.4 V low |
| CVON / THON | Cell voltage/thermistor enable | High-impedance during idle; pulses active only during measurement to minimize leakage current from battery |
| VCELL1–VCELL4 | Individual cell voltage inputs | Differential-capable inputs accepting ≤1.25 V; require precision resistive dividers per TI Table 1 (e.g., 16:1 for VCELL3/VCELL4) |
| SR1 / SR2 | Current sense differential inputs | Accept bipolar ±250 mV across sense resistor; enable charge/discharge flow measurement with dynamic offset cancellation |
Key Features
| Feature | Design Value |
|---|---|
| Self-discharge learning algorithm | Adjusts RemainingCapacity() based on temperature-compensated rate (e.g., doubles per +10°C above 25°C) and time, using fixed 0.39% granularity steps |
| Voltage-based RM calibration | Applies corrections at three EDV thresholds (EDV0/EDV1/EDV2) and three midrange points (VOC25/VOC50/VOC75) to align capacity counter with actual cell voltage behavior |
| Qualified discharge FCC update | Updates FullChargeCapacity() only after verified full discharge (RM ≥ FCC – Near Full × 2 → EDV2) with no charge activity, bounded self-discharge, and stable temperature ≥5°C |
| LED display control | Drives 4–5 segment LEDs (LED1–LED5) via DISP input; supports 20%/25% capacity increments for intuitive user-facing battery status indication |
| Low-power storage mode | Draws only 5–10 µA when VCC is 1.5–3.7 V - preserves EEPROM data and register state during extended shelf life or deep sleep |
Applications
| Medical Portable Monitor | Industrial Handheld Scanner |
|---|---|
Use Scenario: Rechargeable battery pack powers ECG, SpO₂, and display subsystems in field-deployable diagnostic tools requiring >8-hour runtime and precise end-of-life prediction. IC Role / Device Role / Timing Role: BQ2060SS-E411TRG4 serves as primary gas gauge, performing real-time charge integration, cell-balancing-aware voltage monitoring, and SBS-compliant communication with host MCU. Use Value: Enables accurate remaining runtime estimation (RunTimeToEmpty register) and low-battery warnings (EDV2-triggered interrupts), preventing unexpected shutdown during critical patient assessments. | Use Scenario: Ruggedized barcode scanner used in warehouse logistics with frequent charge/discharge cycles and exposure to variable ambient temperatures (–10°C to +50°C). IC Role / Device Role / Timing Role: BQ2060SS-E411TRG4 acts as battery health manager, compensating self-discharge rate dynamically and calibrating capacity against VOC midrange thresholds during idle periods. Use Value: Maintains ±3% state-of-charge accuracy across 500+ cycles by leveraging EEPROM-stored chemistry parameters and temperature-compensated DCR tracking. |
| Lithium-ion Laptop Battery Pack | Smart Power Tool Battery |
Use Scenario: 4-cell Li-ion pack with integrated protection circuitry and SMBus host interface for OEM laptop platforms requiring SBS v1.1 compliance. IC Role / Device Role / Timing Role: BQ2060SS-E411TRG4 functions as SBS slave device, broadcasting ChargingVoltage()/ChargingCurrent() every 10 s and controlling external CFC/DFC FETs for safe charge termination. Use Value: Delivers certified SBS register access (e.g., RelativeStateOfCharge, FullChargeCapacity) while enabling hardware-level overvoltage/overcurrent response via dedicated control outputs. | Use Scenario: High-drain cordless drill battery pack subject to burst loads (>15 A), thermal stress, and rapid partial discharges during intermittent use. IC Role / Device Role / Timing Role: BQ2060SS-E411TRG4 operates as precision coulomb counter with digital filter threshold tuning, rejecting noise from motor commutation while capturing true discharge energy. Use Value: Achieves <2% error in RemainingCapacity() after 200 cycles by combining VFC-based charge counting with midrange VOC corrections during rest periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart battery gas gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ2060A | Same die, different trim; supports identical registers, pinout, and EEPROM structure but lacks HDQ16 protocol support | Requires SMBus-only host architecture; not suitable for legacy HDQ-based systems or mixed-protocol designs | Select BQ2060A only if HDQ16 is unused and cost optimization is prioritized over interface flexibility |
| BQ2083 | Successor IC with enhanced accuracy (±0.5% SoC), integrated LDO, and extended temperature range (–40°C to +85°C); uses same 28-pin SSOP footprint | Targets automotive and extended-industrial applications; requires updated EEPROM configuration and firmware register mapping | Choose BQ2083 for new designs needing higher reliability, wider temp range, or lower system BOM count - not drop-in compatible due to register differences |
Compared with BQ2060SS-E411TRG4, BQ2060A sacrifices HDQ16 interoperability for marginal cost reduction, while BQ2083 upgrades accuracy and thermal robustness at the expense of firmware migration effort - neither offers pin-to-pin or functional drop-in replacement without validation.
Availability
BQ2060SS-E411TRG4 is available at Aetrix Electronics and suitable for medical portable monitors, industrial handheld scanners, and lithium-ion laptop battery packs requiring stable component supply, long-lifecycle support, and SBS v1.1 certification.
Supply support for BQ2060SS-E411TRG4 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 decades of leadership in battery management ICs.
The BQ2060SS-E411TRG4 belongs to TI's Smart Battery Gas Gauge product line, designed specifically for SBS-compliant rechargeable battery packs across portable computing, medical, and industrial equipment - emphasizing accuracy, configurability, and protocol interoperability.
FAQ
What communication interfaces does the BQ2060SS-E411TRG4 support?
The BQ2060SS-E411TRG4 supports both SMBus v1.1 (via SMBC/SMBD pins) and Benchmarq HDQ16 (via HDQ16 pin) protocols. SMBus enables standard SBS register access and PEC error checking, while HDQ16 provides single-wire compatibility with legacy systems. Both interfaces allow full read/write access to all gas gauge registers including RemainingCapacity(), Temperature(), and VCELL1–VCELL4 values - essential for host-level battery analytics in the BQ2060SS-E411TRG4 implementation.
How does the BQ2060SS-E411TRG4 handle self-discharge compensation?
The BQ2060SS-E411TRG4 applies temperature-dependent self-discharge compensation using an EEPROM-programmed base rate (e.g., Y% per day at 25°C). It adjusts RemainingCapacity() in fixed 0.39% decrements at intervals scaled by temperature (halving per 10°C below 25°C, doubling per 10°C above). The timer pauses during charging and resets upon reaching FullChargeCapacity(). This algorithm ensures predictable, granular capacity decay modeling - a core function of the BQ2060SS-E411TRG4 in maintaining long-term SoC accuracy during storage.
Can the BQ2060SS-E411TRG4 monitor individual cell voltages in a 4-cell Li-ion pack?
Yes, the BQ2060SS-E411TRG4 directly monitors up to four series-connected cells via dedicated VCELL1–VCELL4 inputs. Each input accepts ≤1.25 V referenced to VSS and requires external precision resistive dividers (e.g., 16:1 for VCELL3/VCELL4, 8:1 for VCELL1/VCELL2 per TI Table 1). The CVON pin controls FETs to connect dividers only during measurement, minimizing quiescent current. Measured values are stored in optional Manufacturer Function registers and accessible via SMBus/HDQ16 - a defining capability of the BQ2060SS-E411TRG4 for cell-balancing-aware battery management.
What is the role of the REG and VOUT pins on the BQ2060SS-E411TRG4?
The REG pin drives the gate of an external n-JFET to regulate VCC from the battery stack, maintaining a stable 3.1–3.6 V supply even as cell voltage declines. The VOUT pin supplies regulated 3.3 V to the external configuration EEPROM, delivering up to 5 mA to ensure reliable write operations. Together, these outputs decouple the BQ2060SS-E411TRG4's internal operation and EEPROM interface from raw battery fluctuations - critical for consistent measurement integrity and nonvolatile parameter retention in the BQ2060SS-E411TRG4 design.
Does the BQ2060SS-E411TRG4 support automatic capacity learning?
Yes, the BQ2060SS-E411TRG4 performs automatic FullChargeCapacity() (FCC) learning during qualified discharges - defined as a discharge from ≥FCC – Near Full × 2 down to the EDV2 voltage threshold, with no intervening charge activity, bounded self-discharge (<256 mAh), stable temperature ≥5°C, and no midrange corrections. Upon qualification, FCC updates to DCR value plus programmed low-battery percentage. This FCC learning is fundamental to the BQ2060SS-E411TRG4's ability to adapt to aging and usage patterns without manual recalibration.
BQ2060SS-E411TRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
BQ2060SS-E411TRG4 FAQ
1.How can I place an order for BQ2060SS-E411TRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2060SS-E411TRG4 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 BQ2060SS-E411TRG4 reliable?
The price and inventory of BQ2060SS-E411TRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2060SS-E411TRG4 is usually 5 days.
3.What payment methods are accepted for BQ2060SS-E411TRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2060SS-E411TRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2060SS-E411TRG4?
BQ2060SS-E411TRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2060SS-E411TRG4 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 BQ2060SS-E411TRG4?
For technical support, including BQ2060SS-E411TRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2060SS-E411TRG4 requirements.
6.How does Aetrix verify that BQ2060SS-E411TRG4 is sourced from the original manufacturer or authorized distributors?
All BQ2060SS-E411TRG4 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 BQ2060SS-E411TRG4 meets industry standards.
7.What is the process for return or replacement of BQ2060SS-E411TRG4?
All BQ2060SS-E411TRG4 units undergo pre-shipment inspection (PSI). If there is an issue with BQ2060SS-E411TRG4, 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 BQ2060SS-E411TRG4 part is unused and in its original packaging.
Return procedure for BQ2060SS-E411TRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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