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Texas Instruments BQ2060SS-E207-EP
- Part No.:
- BQ2060SS-E207-EP
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
BQ2060SS-E207-EP.pdf
- Description:
- IC COMPLIANT GAS GAUGE 28-QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,027
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Product details
Overview
BQ2060SS-E207-EP from Texas Instruments is a SBS v1.1-compliant gas gauge IC for NiCd, NiMH, Li-ion, and lead-acid battery packs. It delivers 15-bit resolution voltage/temperature/current measurement, supports SMBus v1.1 and 1-wire HDQ16 interfaces, and drives 4- or 5-segment LED displays for remaining capacity indication in portable medical devices and industrial handhelds.
For engineers reviewing the BQ2060SS-E207-EP datasheet, BQ2060SS-E207-EP pinout, BQ2060SS-E207-EP application, or BQ2060SS-E207-EP equivalent, key selection considerations include its V-to-F charge-flow sensing with <16 µV calibrated offset, individual cell voltage monitoring (VCELL1–VCELL4), dual FET control outputs (CFC/DFC), and EEPROM-based self-discharge compensation across –20°C to +70°C operating range.
Technical Context
The BQ2060SS-E207-EP implements a fully differential, dynamically balanced voltage-to-frequency converter (VFC) for high-accuracy charge/discharge integration and a sigma-delta ADC for simultaneous 15-bit voltage, temperature, and current sampling every 2–2.5 seconds. It uses external precision resistor dividers and controlled FET switches (CVON/THON) to measure up to four series cell voltages and NTC thermistor temperature while minimizing quiescent current.
Its gas gauge algorithm continuously updates RemainingCapacity() (RM) using charge counting, programmable self-discharge rate compensation (scaled per ±10°C), midrange voltage corrections (VOC25/VOC50/VOC75), and three end-of-discharge thresholds (EDV0/EDV1/EDV2). FCC learning occurs only during qualified discharges meeting strict conditions including no charge activity, temperature ≥5°C, and EDV2 detection with voltage hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Resolution | 15-bit ADC enables ±1 mV accuracy for pack and individual cell (VCELL1–VCELL4) measurements up to 1.25 V input range. |
| Current Sensing | V-to-F converter with <16 µV calibrated offset supports ±250 mV full-scale input; enables sub-1 mA discharge detection with auto-offset correction. |
| Operating Temp | –20°C to +70°C commercial range ensures stable gas gauge operation in portable test equipment and ruggedized mobile terminals. |
| Supply Current | 235 µA typical operating current and 10 µA low-power storage mode extend battery runtime in always-on monitoring applications. |
| Interface Support | SMBus v1.1 (10–100 kHz) and Benchmarq HDQ16 1-wire protocols enable interoperability with smart battery systems and legacy host controllers. |
| Cell Monitoring | Four dedicated VCELL inputs with CVON-controlled external FET switching allow safe, low-power measurement of up to 4-series Li-ion cells. |
| LED Drive | Five open-drain LED outputs (LED1–LED5) support direct 4- or 5-segment capacity display without external drivers in compact battery packs. |
Pinout & Package
28-pin 150-mil SSOP package with exposed thermal pad (EP suffix); RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HDQ16 | 1-Wire bidirectional data I/O | Open-drain interface for single-wire communication; requires external pull-up; supports break detection and host-to-device timing. |
| ESCL/ESDA | EEPROM serial clock/data | Dedicated 2-wire bus to external configuration EEPROM; isolates calibration data from main SMBus traffic. |
| RBI | Register backup input | Accepts capacitor or auxiliary battery to retain register state during VCC brownout or deep sleep. |
| REG | JFET gate drive output | Controls external n-JFET to regulate VCC from battery stack; maintains stable 3.3 V supply under varying load. |
| VOUT | EEPROM power supply | Provides regulated 3.3 V to external EEPROM; 5 mA source capability ensures reliable memory access. |
| VCELL1–VCELL4 | Individual cell voltage inputs | High-impedance (5 MΩ) inputs accepting ≤1.25 V; require precision resistor dividers and CVON-gated connection. |
| SR1/SR2 | Charge-flow sense resistor inputs | Differential inputs for V-to-F converter; support ±250 mV range and auto-offset calibration down to 6.25 µVh. |
| CFC/DFC | Charge/Discharge FET control | Open-drain outputs driving external MOSFET gates in Li-ion protection circuitry; logic-level compatible with common gate drivers. |
| CVON/THON | Cell/thermistor bias control | Active-high outputs enabling external FETs to connect voltage dividers or thermistor bias only during measurement cycles. |
| TS | Thermistor voltage input | Analog input for NTC thermistor (e.g., Semitec 103AT); used for temperature compensation and full-charge detection. |
Key Features
| Feature | Design Value |
|---|---|
| Self-discharge compensation | Programmable rate at 25°C, scaled exponentially per ±10°C (×2 or ÷2), applied as discrete RM/256 decrements to maintain 0.39% granularity. |
| Voltage-based capacity correction | Three configurable end-of-discharge thresholds (EDV0/EDV1/EDV2) and three midrange points (VOC25/VOC50/VOC75) correct RM based on real-time voltage and temperature. |
| FCC learning validation | Qualified discharge requires no charge activity (>10 mAh), ≤256 mAh light discharge/self-discharge, temperature ≥5°C, and EDV2 hysteresis detection. |
| Low-power operation | 10 µA storage mode current and duty-cycled CVON/THON (12.5% active) minimize parasitic drain during standby. |
| Configurable digital filtering | Programmable threshold in EEPROM prevents false counting from noise or leakage currents below user-defined levels. |
Applications
| Medical Portable Monitor | Industrial Handheld Terminal |
|---|---|
Use Scenario: Battery-powered ECG and SpO₂ monitor requiring accurate runtime prediction and low-voltage shutdown to prevent data loss during patient use. IC Role / Device Role / Timing Role: Gas gauge IC performing real-time charge integration, cell voltage balancing supervision, and LED-based capacity feedback. Use Value: Enables 20% LED segment resolution and <16 µV offset sensing to sustain >98% capacity estimation accuracy over 500+ charge cycles. |
Use Scenario: Rugged barcode scanner used in warehouse logistics with frequent partial charges and wide ambient temperature swings (–10°C to +50°C). IC Role / Device Role / Timing Role: Smart battery manager executing temperature-compensated self-discharge modeling and midrange voltage corrections (VOC50). Use Value: Maintains ±3% state-of-charge accuracy across temperature by scaling self-discharge rate per 10°C and applying VOC50 corrections at 50% SOC. |
| Lithium-ion Laptop Battery Pack | Lead-Acid UPS Module |
Use Scenario: 4-cell Li-ion pack in ultrabook with integrated protection circuitry and SMBus host communication for Windows battery status reporting. IC Role / Device Role / Timing Role: SBS v1.1-compliant gas gauge providing individual cell voltage (VCELL1–VCELL4), CFC/DFC FET control, and ChargingVoltage broadcast. Use Value: Supports Windows ACPI battery driver via SMBus registers and enables safe charge termination using measured cell voltages and thermistor feedback. |
Use Scenario: 12 V sealed lead-acid backup module for network switch with runtime estimation and low-voltage disconnect to protect connected equipment. IC Role / Device Role / Timing Role: Multi-chemistry gas gauge configured for lead-acid via EEPROM chemistry parameters and EDV threshold tuning. Use Value: Delivers accurate remaining runtime (RunTimeToEmpty) using lead-acid-specific self-discharge model and voltage-based EDV2 correction. |
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 V-to-F converter; supports up to 16-cell monitoring; higher integration but lower current-sense resolution (±100 µV offset). | Targeted at multi-cell EV battery modules; lacks HDQ16 interface and LED drivers; requires external EEPROM for configuration. | Select BQ2084DBTR only when >4-cell monitoring or CAN-based telemetry is required; BQ2060SS-E207-EP remains optimal for compact 4-cell Li-ion packs with LED UI. |
| MAX11612ETL+ | Standalone 12-bit SAR ADC with I²C interface; no gas gauge firmware, no SMBus compliance, no self-discharge modeling or FCC learning. | Used in custom fuel gauging firmware stacks; requires full MCU implementation of Coulomb counting, temperature compensation, and voltage correction algorithms. | Choose MAX11612ETL+ only for designs with dedicated firmware resources and need for flexible analog front-end; BQ2060SS-E207-EP provides turnkey SBS v1.1 compliance. |
Compared with BQ2084DBTR and MAX11612ETL+, the BQ2060SS-E207-EP uniquely combines V-to-F charge integration (<16 µV offset), embedded SBS v1.1 firmware, LED drivers, and dual-interface (SMBus/HDQ16) support in a 28-pin SSOP - making it the only drop-in solution for certified smart battery packs requiring minimal host-side software.
Availability
BQ2060SS-E207-EP is available at Aetrix Electronics and suitable for medical portable monitors, industrial handheld terminals, laptop battery packs, and lead-acid UPS modules requiring stable component supply and long-term lifecycle support.
Supply support for BQ2060SS-E207-EP 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 focus on reliability, longevity, and industrial-grade qualification.
The BQ2060SS-E207-EP belongs to TI's Smart Battery Manager product line, designed specifically for SBS v1.1-compliant fuel gauging in rechargeable battery packs across medical, industrial, and computing applications.
FAQ
What battery chemistries does the BQ2060SS-E207-EP support?
The BQ2060SS-E207-EP supports NiCd, NiMH, Li-ion, and lead-acid battery chemistries. Its EEPROM-based configuration allows programming of chemistry-specific parameters including self-discharge rate, voltage thresholds (EDV0–EDV2), and capacity scaling factors. The BQ2060SS-E207-EP automatically applies temperature-compensated corrections and qualified discharge learning tailored to each chemistry's behavior.
How does the BQ2060SS-E207-EP achieve <16 µV offset accuracy in charge counting?
The BQ2060SS-E207-EP achieves <16 µV calibrated offset through an auto-calibration routine initiated via ManufacturerAccess() command. It performs dynamic offset cancellation on the SR1/SR2 differential inputs using internal circuitry that resolves down to 6.25 µVh integration steps. The BQ2060SS-E207-EP stores the final calibrated offset in volatile memory and applies it continuously during V-to-F conversion, ensuring high-accuracy Coulomb counting even at microamp-level discharge currents.
Can the BQ2060SS-E207-EP monitor more than four battery cells?
No, the BQ2060SS-E207-EP has exactly four dedicated VCELL inputs (VCELL1–VCELL4) and is designed for up to four-series-cell configurations. It does not support daisy-chained or multiplexed cell monitoring beyond this count. For battery packs with >4 cells, TI recommends the BQ2084DBTR or BQ20Zxx family, which provide scalable cell monitoring via dedicated analog front-ends and configurable EEPROM mapping.
What is the role of the REG and VOUT pins on the BQ2060SS-E207-EP?
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 for the BQ2060SS-E207-EP core. The VOUT pin supplies regulated 3.3 V to the external configuration EEPROM, delivering up to 5 mA to ensure reliable read/write operations during calibration and parameter updates. Both outputs are critical for autonomous operation without host-supplied power rails.
Does the BQ2060SS-E207-EP support SMBus Packet Error Checking (PEC)?
Yes, the BQ2060SS-E207-EP supports SMBus v1.1 with optional Packet Error Checking (PEC). When enabled via EEPROM configuration, PEC adds an 8-bit CRC byte to all SMBus transactions on SMBC/SMBD lines, ensuring data integrity during communication with host systems. This feature is essential for mission-critical applications such as medical devices where corrupted battery status data could impact safety.
BQ2060SS-E207-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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
BQ2060SS-E207-EP FAQ
1.How can I place an order for BQ2060SS-E207-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2060SS-E207-EP 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-E207-EP reliable?
The price and inventory of BQ2060SS-E207-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2060SS-E207-EP is usually 5 days.
3.What payment methods are accepted for BQ2060SS-E207-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2060SS-E207-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2060SS-E207-EP?
BQ2060SS-E207-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2060SS-E207-EP 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-E207-EP?
For technical support, including BQ2060SS-E207-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2060SS-E207-EP requirements.
6.How does Aetrix verify that BQ2060SS-E207-EP is sourced from the original manufacturer or authorized distributors?
All BQ2060SS-E207-EP 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-E207-EP meets industry standards.
7.What is the process for return or replacement of BQ2060SS-E207-EP?
All BQ2060SS-E207-EP units undergo pre-shipment inspection (PSI). If there is an issue with BQ2060SS-E207-EP, 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-E207-EP part is unused and in its original packaging.
Return procedure for BQ2060SS-E207-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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