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Texas Instruments BQ2060SS-E411G4
- Part No.:
- BQ2060SS-E411G4
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
BQ2060SS-E411G4.pdf
- Description:
- IC GAS GAUGE MULTI 28SSOP/QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,840
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Product details
Overview
BQ2060SS-E411G4 from Texas Instruments is a SBS v1.1-compliant smart battery gas gauge IC designed for NiCd, NiMH, Li-ion, and lead-acid battery packs. 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 for real-time remaining capacity and run-time prediction in portable medical devices and industrial battery systems.
For engineers reviewing the BQ2060SS-E411G4 datasheet, BQ2060SS-E411G4 pinout, BQ2060SS-E411G4 application, or BQ2060SS-E411G4 equivalent, this page provides verified pin functions, cell-voltage monitoring capability (up to 4 cells), self-discharge compensation across –20°C to +70°C, and confirmed alternative options for SBS-compliant gas gauge replacement in production battery management designs.
Technical Context
The BQ2060SS-E411G4 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 15-bit measurements of individual cell voltages (VCELL1–VCELL4), temperature (via NTC thermistor on TS), and current (SRC input).
It supports dual communication protocols: SMBus v1.1 (SMBC/SMBD pins, 10–100 kHz) and Benchmarq HDQ16 (HDQ16 pin, break-based timing). Control outputs CVON and THON enable time-gated connection of voltage dividers and thermistor bias, reducing standby current; DFC/CFC drive external FETs for Li-ion pack protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VFC Offset | <16 µV - enables accurate low-current charge/discharge integration without manual calibration |
| ADC Resolution | 15-bit - provides precise voltage (mV), current (mA), and temperature (0.1°K) reporting per SBS register map |
| Cell Monitoring | 4-cell support via VCELL1–VCELL4 - allows series Li-ion pack supervision with programmable divider ratios |
| Operating Temp | –20°C to +70°C - validated for commercial battery pack environments including handheld test equipment |
| Supply Current | 180–235 µA typical - ensures minimal parasitic drain during active gas gauging |
| SMBus Speed | 10–100 kHz - compatible with standard system management bus timing for host-side battery status polling |
| LED Drive | 5-segment outputs (LED1–LED5) - directly drives discrete LEDs for 20%/25% capacity increments without external drivers |
Pinout & Package
28-pin 150-mil SSOP package with exposed thermal pad (not electrically connected); RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HDQ16 | 1-Wire bidirectional data | Single-wire interface for SBS-compatible host communication; uses break timing for command sync |
| ESCL / ESDA | EEPROM clock/data | Drives external configuration EEPROM (e.g., 24C02) storing chemistry, self-discharge rate, and calibration |
| RBI | Data retention backup | Accepts capacitor or auxiliary supply to preserve registers during VCC brownout or battery removal |
| REG | JFET gate control output | Regulates internal VCC from battery stack using external n-JFET; 3.1–3.6 V regulated output |
| VOUT | EEPROM supply output | Provides regulated power to external EEPROM; 5 mA source capability at VCC – 0.6 V |
| DFC / CFC | Discharge/Charge FET control | Open-drain outputs driving external MOSFET gates in Li-ion protection circuitry |
| CVON / THON | Cell/thermistor enable | Time-gated high-impedance outputs connecting voltage dividers and thermistor bias only during measurement |
| SR1 / SR2 | Current sense differential inputs | Accepts ±250 mV across sense resistor; VSR = VSR2 – VSR1 determines charge (+) vs discharge (–) |
| VCELL1–VCELL4 | Individual cell voltage inputs | High-impedance inputs (5 MΩ) accepting ≤1.25 V; require precision resistive dividers per TI Table 1 |
| TS | Thermistor voltage input | Measures NTC (e.g., Semitec 103AT) voltage; THON enables bias only during sampling (60 ms pulse) |
Key Features
| Feature | Design Value |
|---|---|
| Self-discharge compensation | Temperature-scaled algorithm (×2 per +10°C) using EEPROM-stored 25°C baseline; adjusts RM in 0.39% steps |
| Voltage-based capacity calibration | Three end-of-discharge thresholds (EDV0/EDV1/EDV2) and three midrange points (VOC25/VOC50/VOC75) correct RM register |
| Qualified FCC learning | Updates FullChargeCapacity() only after verified full discharge meeting 5 criteria: no charge, temp ≥5°C, EDV2 hit, etc. |
| Dual-protocol interface | Hardware-selectable SMBus v1.1 (SMBC/SMBD) or HDQ16 (HDQ16) - no firmware change needed for host compatibility |
| Low-power storage mode | 5–10 µA ICC in sleep mode - preserves EEPROM data and register state during long-term storage |
Applications
| Medical Portable Monitor Battery Pack | Industrial Handheld Test Equipment |
|---|---|
Use Scenario: Rechargeable Li-ion battery pack powering ECG/SpO₂ monitor with 8-hour runtime requirement and FDA-critical capacity accuracy. IC Role / Device Role / Timing Role: Primary SBS-compliant gas gauge IC performing real-time coulomb counting, cell balancing supervision, and SMBus broadcast of RemainingCapacity() and RunTimeToEmpty(). Use Value: Enables ±1% remaining capacity accuracy over 500 cycles via auto-calibrating VFC and temperature-compensated self-discharge modeling - critical for clinical alerting. |
Use Scenario: Ruggedized multimeter with hot-swappable NiMH battery pack requiring LED-based fuel gauge and low-temp operation down to –10°C. IC Role / Device Role / Timing Role: Gas gauge IC managing 4-cell NiMH stack, driving 5-segment LED display (20% increments), and reporting Temperature() and Voltage() via HDQ16 to embedded MCU. Use Value: Delivers stable LED indication across –20°C to +70°C using THON-gated thermistor sampling and VOC-based midrange corrections - eliminates false "low battery" warnings during cold start. |
| Laptop Smart Battery Subsystem | UPS Backup Module with Lead-Acid |
Use Scenario: OEM laptop battery pack integrating protection circuitry and SBS v1.1 compliance for Windows ACPI battery reporting. IC Role / Device Role / Timing Role: Core SBS gas gauge IC providing ChargingVoltage()/ChargingCurrent() broadcasts to smart charger, DFC/CFC control of protection FETs, and EEPROM-backed configuration. Use Value: Supports seamless Windows battery status UI via standardized SBS commands (e.g., RelativeStateOfCharge, CycleCount) - eliminates custom driver development. |
Use Scenario: Rack-mount UPS using sealed lead-acid battery with runtime estimation and temperature derating for high-ambient installations. IC Role / Device Role / Timing Role: Gas gauge IC monitoring 4-cell SLA stack, applying temperature-scaled self-discharge model, and updating RemainingCapacity() every 2–2.5 s for accurate runtime forecasting. Use Value: Extends usable runtime by 8–12% versus fixed-rate models through dynamic self-discharge adjustment - validated at 40–60°C ambient per TI application notes. |
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 |
|---|---|---|---|
| BQ2084DBTR | Integrated 12-bit ADC, no VFC; supports up to 16 cells; requires external sense resistor calibration | Targeted at higher-cell-count Li-ion packs (e.g., 10S–16S EV tools); lacks auto-offset VFC for ultra-low-current accuracy | Select when scaling beyond 4 cells or when SMBus-only interface suffices; not drop-in due to different pinout and register set |
| MAX11612EEE+ | Standalone 12-bit SAR ADC with I²C interface; no gas gauge logic, EEPROM interface, or SBS command set | Used in custom BMS designs where microcontroller handles all gauging algorithms; no built-in self-discharge or FCC learning | Choose only for non-SBS systems requiring flexible analog front-end; requires full firmware implementation of gauging math |
Compared with BQ2060SS-E411G4, the BQ2084DBTR offers expanded cell count but sacrifices VFC-based ultra-low-offset charge integration, while the MAX11612EEE+ provides raw ADC performance without any SBS compliance or autonomous gauging - making BQ2060SS-E411G4 uniquely suited for drop-in SBS v1.1 battery pack certification.
Availability
BQ2060SS-E411G4 is available at Aetrix Electronics and suitable for medical portable monitors, industrial handheld testers, laptop smart battery subsystems, and UPS backup modules requiring stable component supply and long-lifecycle support.
Supply support for BQ2060SS-E411G4 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 over 50 years of innovation in precision analog ICs.
The BQ2060SS-E411G4 belongs to TI's Smart Battery Solutions product line, engineered specifically for SBS v1.1-compliant battery packs requiring autonomous, EEPROM-configurable gas gauging with multi-chemistry support and robust thermal compensation.
FAQ
What battery chemistries does the BQ2060SS-E411G4 support?
The BQ2060SS-E411G4 supports NiCd, NiMH, Li-ion, and lead-acid battery chemistries. Its EEPROM-based configuration stores chemistry-specific parameters including self-discharge rate, rate compensation factors, and design voltage/capacity - enabling accurate gauging across all four types without hardware changes. The BQ2060SS-E411G4 applies temperature-scaled self-discharge modeling and voltage-based calibration (EDV/VOC thresholds) tailored per chemistry.
How does the BQ2060SS-E411G4 achieve <16 µV V-to-F converter offset?
The BQ2060SS-E411G4 achieves <16 µV V-to-F converter offset through an on-chip auto-calibration routine initiated via ManufacturerAccess() command. This process cancels voltage offset error across SR1/SR2 pins down to 6.25 µV, with final calibrated offset bounded at ±16 µV. The BQ2060SS-E411G4 performs this calibration automatically during initial power-up and can be re-triggered in-system - eliminating need for external trimming components.
Can the BQ2060SS-E411G4 monitor individual cell voltages in a 4-cell Li-ion pack?
Yes, the BQ2060SS-E411G4 monitors individual cell voltages in a 4-cell Li-ion pack using 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 BQ2060SS-E411G4 stores measured values in optional Manufacturer Function area registers (0x3c–0x3f) and supports CVON-gated sampling to minimize standby current.
What is the role of the RBI pin on the BQ2060SS-E411G4?
The RBI (Register Backup Input) pin on the BQ2060SS-E411G4 provides backup potential to preserve register contents during VCC brownout or battery removal. When VCC drops below ~2.0 V, the BQ2060SS-E411G4 draws ≤50 nA from RBI to retain critical state (e.g., RemainingCapacity, FCC) - enabling seamless resume after power restoration. RBI accepts either a storage capacitor or auxiliary supply, and is required for reliable data retention in hot-swap battery applications.
Does the BQ2060SS-E411G4 support both SMBus and HDQ16 interfaces simultaneously?
No, the BQ2060SS-E411G4 supports SMBus v1.1 and HDQ16 as mutually exclusive interfaces - selected at power-up by hardware configuration (e.g., pull-up/down on SMBC/SMBD). SMBus uses SMBC/SMBD pins with 10–100 kHz clocking; HDQ16 uses HDQ16 pin with break-based timing per TI Figure 2–4. The BQ2060SS-E411G4 does not arbitrate or switch between them dynamically - interface choice is fixed per board design.
BQ2060SS-E411G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-E411G4 FAQ
1.How can I place an order for BQ2060SS-E411G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2060SS-E411G4 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-E411G4 reliable?
The price and inventory of BQ2060SS-E411G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2060SS-E411G4 is usually 5 days.
3.What payment methods are accepted for BQ2060SS-E411G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2060SS-E411G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2060SS-E411G4?
BQ2060SS-E411G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2060SS-E411G4 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-E411G4?
For technical support, including BQ2060SS-E411G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2060SS-E411G4 requirements.
6.How does Aetrix verify that BQ2060SS-E411G4 is sourced from the original manufacturer or authorized distributors?
All BQ2060SS-E411G4 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-E411G4 meets industry standards.
7.What is the process for return or replacement of BQ2060SS-E411G4?
All BQ2060SS-E411G4 units undergo pre-shipment inspection (PSI). If there is an issue with BQ2060SS-E411G4, 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-E411G4 part is unused and in its original packaging.
Return procedure for BQ2060SS-E411G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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