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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Management

Texas Instruments BQ2060A-E619DBQR

Name: BQ2060A-E619DBQR
Brand: Texas Instruments
SKU: BQ2060A-E619DBQR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BQ2060A-E619DBQR

Manufacturer:: Texas Instruments

Category:: Battery Management

Package:: 28-SSOP (0.154", 3.90mm Width)

Datasheet:: BQ2060A-E619DBQR.pdf

Description:: IC SBS-COMPL GAS GAUGE 28-QSOP

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Product details

Overview

BQ2060A-E619DBQR from Texas Instruments is an SBS v1.1-compliant gas gauge IC for NiCd, NiMH, Li-ion, and lead-acid battery packs. It provides 15-bit resolution voltage/temperature/current measurement, reports individual cell voltages (VCELL1–VCELL4), drives a 4- or 5-segment LED display via LED1–LED5 outputs, and controls charge/discharge FETs (CFC/DFC) in Li-ion protection circuits.

For engineers reviewing the BQ2060A-E619DBQR datasheet, BQ2060A-E619DBQR pinout, BQ2060A-E619DBQR application, or BQ2060A-E619DBQR equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply support for battery pack design, smart battery system integration, and embedded power management validation.

Technical Context

The BQ2060A-E619DBQR implements a voltage-to-frequency converter (VFC) with auto-offset correction (<16 µV calibrated offset) for charge/discharge counting, paired with a sigma-delta ADC for voltage (±250 mV full-scale on SRC), temperature (NTC thermistor via TS/THON), and current sensing. It supports dual communication protocols: SMBus v1.1 (2-wire, 10–100 kHz) with packet error checking and 1-wire HDQ16 (190–250 µs cycle time).

It operates from 2.7 V to 3.7 V (ICC = 180–235 µA typical), integrates REG output for JFET-based VCC regulation from battery stack, and uses external EEPROM (via ESCL/ESDA) to store chemistry parameters, self-discharge rates, calibration coefficients, and cell divider ratios - enabling adaptive capacity learning across discharge cycles and temperature gradients.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 3.7 V - powers device directly from battery stack; REG output enables stable internal rail without external LDO.
Current Consumption	180–235 µA operating / 5–10 µA storage mode - enables multi-year runtime in low-power battery monitoring applications.
Voltage Measurement	15-bit resolution, ±250 mV full-scale on SRC - supports high-accuracy current sensing with sub-milliohm sense resistors.
Cell Monitoring	VCELL1–VCELL4 inputs (0–1.25 V range) - enables per-cell voltage tracking for up to 4-series Li-ion cells with external precision dividers.
Communication	SMBus v1.1 + HDQ16 - dual-protocol interoperability with host systems using standard SBS command set (e.g., RemainingCapacity, Temperature, BatteryStatus).
Offset Calibration	<16 µV post-calibration - ensures <0.1% charge-counting error over lifetime, critical for accurate remaining capacity estimation.
Operating Temp	–20°C to +70°C - qualified for commercial battery pack environments including portable medical, industrial handhelds, and test equipment.

Pinout & Package

28-pin 150-mil (3.8-mm) SSOP package with exposed thermal pad (not electrically connected). Pin functions validated per TI SLUS500D Rev. October 2011.

Pin/Terminal	Circuit Role	Design Meaning
HDQ16 (Pin 1)	1-wire bidirectional I/O	Enables direct connection to single-wire host microcontrollers without pull-up resistors; supports break/recovery timing per HDQ16 spec.
SMBC/SMBD (Pins 27–28)	SMBus clock/data	Open-drain interface compliant with SMBus v1.1; supports PEC for data integrity in noisy battery-pack environments.
SR1/SR2 (Pins 21–22)	Charge/discharge sense resistor inputs	Differential input for VFC; measures bipolar ±250 mV signals to track net coulombic flow with auto-offset cancellation.
VCELL1–VCELL4 (Pins 23–26)	Individual cell voltage inputs	High-impedance (5 MΩ) inputs accepting 0–1.25 V; require external resistor dividers to scale series cell voltages safely.
CFC/DFC (Pins 16–15)	Charge/discharge FET gate drivers	Active-low outputs driving external N-channel FETs; integrated logic prevents simultaneous conduction in Li-ion protection circuits.
LED1–LED5 (Pins 10–14)	LED segment drivers	Current-sinking outputs supporting 4- or 5-segment visual state-of-charge indication without external transistors.

Key Features

Feature	Design Value
Smart Battery Specification v1.1 compliance	Full register map implementation (e.g., RemainingCapacity, FullChargeCapacity, AtRateTimeToEmpty) enables plug-and-play integration into SBS hosts without firmware modification.
Adaptive capacity learning	Updates FullChargeCapacity (FCC) after qualified discharge (RM ≥ FCC − Near Full × 2 → EDV2), enabling true capacity tracking under real-world usage and aging.
Temperature-compensated self-discharge modeling	Adjusts RemainingCapacity every ~6750 s at 25°C (scaling by factor of 2 per 10°C), maintaining ±0.39% granularity regardless of ambient conditions.
Voltage-based RM correction	Applies three programmable end-of-discharge thresholds (EDV0/EDV1/EDV2) to correct RemainingCapacity() counter when voltage drops below calibrated levels - improves accuracy at low SOC.
External EEPROM configuration	Stores battery-specific parameters (chemistry, divider ratios, self-discharge rate, EDV thresholds) - allows one BQ2060A-E619DBQR design to support multiple pack variants via software programming.

Applications

Laptop Battery Pack	Medical Portable Monitor
Use Scenario: Integrated into 3S/4S Li-ion battery packs powering clinical-grade portable monitors with 8+ hour runtime requirements. IC Role / Device Role / Timing Role: Gas gauge IC performing real-time coulomb counting, cell balancing supervision (via VCELL monitoring), and SMBus reporting of RemainingCapacity and Temperature to host MCU. Use Value: Enables FDA-compliant battery runtime prediction within ±3% error across temperature and aging, meeting IEC 62304 power management requirements.	Use Scenario: Embedded in sealed, rechargeable battery modules for handheld ultrasound and ECG devices requiring precise low-SOC warning and safe shutdown. IC Role / Device Role / Timing Role: Primary fuel gauge managing LED-based state-of-charge display (LED1–LED5), controlling CFC/DFC FETs during overvoltage/overcurrent events, and triggering EDV2-based shutdown. Use Value: Delivers certified low-voltage cutoff at 2.8 V/cell with <100 ms response, preventing deep discharge damage while maintaining >95% usable capacity.
Industrial Handheld Scanner	Test & Measurement Equipment
Use Scenario: Used in ruggedized barcode scanners with hot-swappable NiMH battery packs operating in warehouse environments (–10°C to +50°C). IC Role / Device Role / Timing Role: Dual-protocol gas gauge communicating via HDQ16 to base station MCU and SMBus to dock charger; compensates self-discharge using THON-controlled thermistor bias. Use Value: Maintains ±5% capacity accuracy over 500+ charge cycles and 2-year shelf life, eliminating field-reported "phantom drain" complaints.	Use Scenario: Deployed in benchtop multimeters and oscilloscopes with internal Li-ion backup batteries ensuring non-volatile memory retention during AC loss. IC Role / Device Role / Timing Role: Low-power gas gauge in storage mode (ISLP = 5–10 µA), monitoring self-discharge and initiating periodic wake-ups to refresh RemainingCapacity() before RAM corruption occurs. Use Value: Extends backup battery service life to >3 years with automatic capacity recalibration, reducing field replacement costs by 70% vs. fixed-capacity estimators.

Laptop Battery Pack

Medical Portable Monitor

Use Scenario: Integrated into 3S/4S Li-ion battery packs powering clinical-grade portable monitors with 8+ hour runtime requirements.

IC Role / Device Role / Timing Role: Gas gauge IC performing real-time coulomb counting, cell balancing supervision (via VCELL monitoring), and SMBus reporting of RemainingCapacity and Temperature to host MCU.

Use Value: Enables FDA-compliant battery runtime prediction within ±3% error across temperature and aging, meeting IEC 62304 power management requirements.

Use Scenario: Embedded in sealed, rechargeable battery modules for handheld ultrasound and ECG devices requiring precise low-SOC warning and safe shutdown.

IC Role / Device Role / Timing Role: Primary fuel gauge managing LED-based state-of-charge display (LED1–LED5), controlling CFC/DFC FETs during overvoltage/overcurrent events, and triggering EDV2-based shutdown.

Use Value: Delivers certified low-voltage cutoff at 2.8 V/cell with <100 ms response, preventing deep discharge damage while maintaining >95% usable capacity.

Industrial Handheld Scanner

Test & Measurement Equipment

Use Scenario: Used in ruggedized barcode scanners with hot-swappable NiMH battery packs operating in warehouse environments (–10°C to +50°C).

IC Role / Device Role / Timing Role: Dual-protocol gas gauge communicating via HDQ16 to base station MCU and SMBus to dock charger; compensates self-discharge using THON-controlled thermistor bias.

Use Value: Maintains ±5% capacity accuracy over 500+ charge cycles and 2-year shelf life, eliminating field-reported "phantom drain" complaints.

Use Scenario: Deployed in benchtop multimeters and oscilloscopes with internal Li-ion backup batteries ensuring non-volatile memory retention during AC loss.

IC Role / Device Role / Timing Role: Low-power gas gauge in storage mode (ISLP = 5–10 µA), monitoring self-discharge and initiating periodic wake-ups to refresh RemainingCapacity() before RAM corruption occurs.

Use Value: Extends backup battery service life to >3 years with automatic capacity recalibration, reducing field replacement costs by 70% vs. fixed-capacity estimators.

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 (no HDQ16); 32-pin TSSOP package.	Lacks analog front-end precision for ultra-low-current applications; requires external sense resistor calibration.	Select BQ2084DBTR only if SMBus-only interface suffices and higher integration (on-chip EEPROM) outweighs need for VFC-level accuracy.
MAX17043G+T	ModelGauge™ m3 algorithm; 1.8 V to 4.5 V supply; 10-pin µDFN; no LED drivers or FET controls.	No native LED display support or charge/discharge FET control outputs - requires external driver circuitry.	Choose MAX17043G+T when advanced impedance-track fuel gauging is prioritized over hardware-level pack protection integration.

Compared with BQ2060A-E619DBQR, BQ2084DBTR trades VFC-based coulomb counting accuracy for simpler SMBus-only integration and on-chip memory, while MAX17043G+T replaces hardware-based compensation with model-based estimation - making BQ2060A-E619DBQR uniquely suited for cost-sensitive, FET-integrated, dual-protocol battery packs requiring traceable analog measurement fidelity.

Availability

BQ2060A-E619DBQR is available at Aetrix Electronics and suitable for laptop battery packs, medical portable monitors, industrial handheld scanners, and test & measurement equipment requiring stable component supply across long-lifecycle programs.

Supply support for BQ2060A-E619DBQR 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 battery management solutions.

The BQ2060A-E619DBQR belongs to TI's Smart Battery Fuel Gauge product line, designed specifically for SBS v1.1-compliant battery packs requiring high-accuracy coulomb counting, multi-chemistry support, and hardware-level safety control in portable and industrial applications.

FAQ

What communication protocols does the BQ2060A-E619DBQR support?

The BQ2060A-E619DBQR supports both SMBus v1.1 (2-wire, open-drain, 10–100 kHz with PEC) and 1-wire HDQ16 (190–250 µs cycle time) protocols. This dual-interface capability allows seamless integration into host systems using either standard SBS command sets or resource-constrained microcontrollers with single-wire peripherals - all while maintaining full register compatibility (e.g., RemainingCapacity, Temperature, BatteryStatus) defined in Smart Battery Specification v1.1.

How does the BQ2060A-E619DBQR achieve high-accuracy remaining capacity estimation?

The BQ2060A-E619DBQR achieves high-accuracy remaining capacity estimation through three synchronized mechanisms: (1) a voltage-to-frequency converter (VFC) with auto-offset calibration (<16 µV) for precise coulomb counting on SR1/SR2; (2) adaptive capacity learning that updates FullChargeCapacity (FCC) after qualified discharges from near-full to EDV2; and (3) voltage-based corrections applied at three programmable end-of-discharge thresholds (EDV0/EDV1/EDV2) to align RemainingCapacity() with actual cell voltage behavior - delivering ±3% accuracy across temperature, aging, and load profiles.

Can the BQ2060A-E619DBQR monitor individual cell voltages in a Li-ion pack?

Yes, the BQ2060A-E619DBQR monitors individual cell voltages via dedicated VCELL1–VCELL4 inputs (Pins 23–26), each accepting 0–1.25 V with 5 MΩ input impedance. These inputs require external precision resistor dividers to scale series cell voltages safely - for example, a 16:1 ratio for VCELL3/VCELL4 and 8:1 for VCELL1/VCELL2 as specified in TI SLUS500D. The CVON output (Pin 17) enables time-gated connection of dividers to minimize standby current, and measured values are stored in optional Manufacturer Function registers for host access.

What is the role of the external EEPROM in BQ2060A-E619DBQR operation?

The external EEPROM (connected via ESCL/ESDA pins) stores battery-specific configuration data essential for BQ2060A-E619DBQR operation: chemistry type, self-discharge rate at 25°C, cell voltage divider ratios, EDV thresholds, temperature compensation factors, and calibration coefficients. This allows a single BQ2060A-E619DBQR design to support multiple battery variants without hardware changes - and enables field updates to capacity models and safety parameters without reprogramming the IC itself.

Does the BQ2060A-E619DBQR provide hardware-level battery protection functions?

Yes, the BQ2060A-E619DBQR provides hardware-level battery protection through dedicated outputs: CFC (Charge FET Control, Pin 16) and DFC (Discharge FET Control, Pin 15) drive external N-channel FETs in Li-ion protection circuits, while THON (Pin 18) and CVON (Pin 17) enable controlled biasing of thermistor and cell divider networks. These outputs operate independently of host communication, ensuring fail-safe shutdown during overvoltage, overcurrent, or thermal fault conditions - even if the SMBus or HDQ16 interface is unresponsive.

BQ2060A-E619DBQR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 28-SSOP (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

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-E619DBQR FAQ

1.How can I place an order for BQ2060A-E619DBQR through Aetrix?

Please submit a Request for Quotation (RFQ) for BQ2060A-E619DBQR 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-E619DBQR reliable?

The price and inventory of BQ2060A-E619DBQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2060A-E619DBQR is usually 5 days.

3.What payment methods are accepted for BQ2060A-E619DBQR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2060A-E619DBQR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BQ2060A-E619DBQR?

BQ2060A-E619DBQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BQ2060A-E619DBQR 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-E619DBQR?

For technical support, including BQ2060A-E619DBQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2060A-E619DBQR requirements.

6.How does Aetrix verify that BQ2060A-E619DBQR is sourced from the original manufacturer or authorized distributors?

All BQ2060A-E619DBQR 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-E619DBQR meets industry standards.

7.What is the process for return or replacement of BQ2060A-E619DBQR?

All BQ2060A-E619DBQR units undergo pre-shipment inspection (PSI). If there is an issue with BQ2060A-E619DBQR, 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-E619DBQR part is unused and in its original packaging.

Return procedure for BQ2060A-E619DBQR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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