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Texas Instruments BQ27411DRZR-G1A
- Part No.:
- BQ27411DRZR-G1A
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 12-VFDFN Exposed Pad
- Datasheet:
-
BQ27411DRZR-G1A.pdf
- Description:
- IC FUEL GAUGE LI-ION 1CELL 12SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,672
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Product details
Overview
BQ27411DRZR-G1A from Texas Instruments is a single-cell Li-ion battery fuel gauge IC with integrated 1.8-V LDO, 400-kHz I²C interface, 16-bit coulomb counter, internal die temperature sensor, and Impedance Track™ algorithm for state-of-charge (SOC) estimation. It resides inside the battery pack and uses a 10-mΩ shunt resistor for current sensing in portable electronics requiring accurate runtime prediction.
For engineers reviewing the BQ27411DRZR-G1A datasheet, BQ27411DRZR-G1A pinout, BQ27411DRZR-G1A application, or BQ27411DRZR-G1A equivalent, key selection considerations include OTP-configurable chemistry support (LiCoO₂, 4.2 V max), low quiescent current (9 µA hibernate mode), ±0.1% voltage measurement accuracy, integrated LDO power architecture, and I²C timing compliance at 400 kHz with 66-µs bus-free inter-packet delay.
Technical Context
The BQ27411DRZR-G1A implements Texas Instruments' patented Impedance Track™ algorithm to model battery impedance, open-circuit voltage (OCV), and load behavior-enabling SOC estimation that adapts to aging, temperature, and rate changes. Its coulomb counter integrates differential current measurements across SRP/SRN with 16-bit effective resolution and 1-s conversion time.
Operation relies on dual ADC subsystems: a 15-bit ADC for BAT voltage (2.45–4.5 V range) and a dedicated integrating ADC for current sensing, plus an internal die temperature sensor (±10°C accuracy). Power management includes four functional modes-NORMAL (93 µA), SLEEP (21 µA), HIBERNATE (9 µA), and SHUTDOWN (0.6 µA)-with automatic transitions and host-controlled wake-up via I²C or PROG pin toggling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Type | Single-cell Li-ion (LiCoO₂, 4.2 V max charge voltage per CHEM_ID 0x0128) |
| I²C Interface | 400-kHz Fast Mode compatible; fixed 7-bit address 0x55; supports incremental read/write, quick read, 1-byte write |
| Coulomb Counter | 16-bit effective resolution; 1-s conversion time; ±25 mV input range across SRP/SRN |
| Voltage Measurement | 15-bit ADC; 2.45–4.5 V input range; ±0.1% typical accuracy over –40°C to 85°C |
| Temperature Sensing | Integrated die temperature sensor; ±10°C accuracy; host-reported temperature also supported |
| Power Modes | NORMAL (93 µA), SLEEP (21 µA), HIBERNATE (9 µA), SHUTDOWN (0.6 µA) |
| LDO Output | 1.8 V ±3%; requires 0.47-µF ceramic decoupling capacitor on VDD–VSS |
Pinout & Package
Package: 12-pin VSON (DRZR), 2.50 mm × 4.00 mm, 0.5-mm pitch, wettable flank.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SDA | I²C data line (open-drain) | Requires external 5–10-kΩ pullup; 1.0-MΩ pulldown recommended if pullup disconnected during operation |
| 2 - SCL | I²C clock line (open-drain) | Same pullup/pulldown requirements as SDA; supports 400-kHz timing with 66-µs inter-packet delay |
| 3 - VSS | Ground reference | Primary return path for LDO, ADC, and coulomb counter; must be low-impedance connection to battery pack ground |
| 5 - VDD | LDO regulated output | 1.8-V supply for internal circuitry; not intended to power external devices; decouple with 0.47-µF X5R ceramic |
| 6 - BAT | Battery voltage input & LDO input | Connects to PACK+; supplies LDO and provides voltage measurement input; requires 1-µF ceramic capacitor to VSS |
| 7 - SRN | Coulomb counter low-side sense input | Differential input with SRP; accepts 10-mΩ shunt; supports low-side sensing when connected to PACKN |
| 8 - SRP | Coulomb counter high-side sense input | Differential input with SRN; connects to BAT/CELLP in high-side configuration or PACKN in low-side configuration |
| 10 - TEST | Factory test input | Must be pulled low (1.0-MΩ pulldown) for normal operation; unused in end application |
| 12 - PROG | OTP programming voltage input | Accepts 7.4-V typical for factory OTP programming; 1.0-MΩ pulldown prevents floating; toggling exits SHUTDOWN mode |
Key Features
| Feature | Design Value |
|---|---|
| Impedance Track™ algorithm | Enables adaptive SOC estimation that compensates for battery aging, self-discharge, temperature drift, and load-rate variation without host intervention |
| One-Time Programmable (OTP) memory | Stores chemistry ID (0x0128), data memory code (0x80), and firmware version (0x0109); eliminates need for host-based initialization or calibration download |
| Integrated 1.8-V LDO | Derives internal supply directly from battery (2.45–4.5 V input range); enables operation down to 2.45 V without external regulator |
| Low-power architecture | HIBERNATE mode draws only 9 µA; SHUTDOWN mode draws 0.6 µA; automatic mode transitions reduce host software overhead |
| Dual-sensing topology | Supports both high-side (SRP→BAT, SRN→PACKP) and low-side (SRP→PACKN, SRN→BATN) shunt configurations for flexible PCB layout |
Applications
| Smartphones | Digital Cameras |
|---|---|
Use Scenario: Real-time battery remaining capacity and state-of-charge reporting during video capture, GPS use, and multi-app concurrency. IC Role / Device Role / Timing Role: Fuel gauge IC residing inside removable battery pack; communicates SOC, voltage, and health status via I²C to application processor every 1–5 seconds. Use Value: Enables precise low-battery warnings and graceful OS shutdown before unexpected power loss, improving user experience and data integrity. | Use Scenario: Runtime estimation during burst-mode still capture and continuous HD video recording with flash and image stabilization active. IC Role / Device Role / Timing Role: Embedded fuel gauge providing filtered RemainingCapacity (RM) and StateOfHealth (SOH) values to camera controller firmware at 100-ms intervals. Use Value: Prevents premature shutdown during long exposures by accounting for dynamic load transients and battery impedance rise at low temperatures. |
| Handheld Terminals | MP3/Multimedia Players |
Use Scenario: Multi-shift operation in logistics scanners with intermittent barcode scanning, Bluetooth LE communication, and backlight usage. IC Role / Device Role / Timing Role: Battery monitor supplying AverageCurrent, StandbyCurrent, and FullChargeCapacity to embedded RTOS for predictive battery life scheduling. Use Value: Extends usable runtime by 12–18% versus voltage-only gauging through accurate discharge modeling under pulsed loads. | Use Scenario: Continuous audio playback with display, touch interface, and Bluetooth streaming over extended periods. IC Role / Device Role / Timing Role: Integrated coulomb counter delivering RemainingCapacityUnfiltered and StateOfChargeUnfiltered for smoothing algorithms in media SoC firmware. Use Value: Delivers ±2% SOC accuracy across full temperature range (–20°C to 60°C), eliminating "jumping" battery indicators during ambient thermal shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery fuel gauging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ27421-G1A | Higher integration: adds integrated protection FET drivers and enhanced safety features; same 12-pin VSON package; 4.3-V chemistry support (CHEM_ID 0x0312) | Targeted at battery packs requiring integrated cell protection logic alongside fuel gauging | Select BQ27421-G1A when system-level safety certification (e.g., UL 2054) mandates hardware-based overcurrent/overvoltage response independent of host MCU |
| BQ27441-G1A | Extended temperature range (–40°C to 85°C vs. same), improved current accuracy (±0.5% vs. ±1%), and higher-resolution 16-bit voltage ADC (vs. 15-bit) | Designed for automotive infotainment and industrial handhelds where extended thermal stability and tighter measurement tolerances are required | Choose BQ27441-G1A for applications demanding <±0.5% current error across full temperature range and AEC-Q200 alignment |
Compared with BQ27421-G1A and BQ27441-G1A, the BQ27411DRZR-G1A offers optimized cost and footprint for consumer-grade single-cell Li-ion packs where basic Impedance Track™ gauging and OTP configurability suffice-without added protection logic or extended-spec metrology.
Availability
BQ27411DRZR-G1A is available at Aetrix Electronics and suitable for smartphones, digital cameras, and handheld terminals requiring stable component supply, long-term lifecycle support, and consistent OTP configuration across production batches.
Supply support for BQ27411DRZR-G1A 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 company headquartered in Dallas, Texas, designing analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The BQ27411DRZR-G1A belongs to TI's bq27xxx fuel gauge product line, engineered specifically for space-constrained, cost-sensitive single-cell Li-ion battery packs in consumer portable devices-emphasizing minimal external components, OTP-based configuration, and host-transparent runtime estimation.
FAQ
What battery chemistries does the BQ27411DRZR-G1A support?
The BQ27411DRZR-G1A is factory-configured for LiCoO₂ chemistry with 4.2-V maximum charge voltage (CHEM_ID = 0x0128). It does not support LiFePO₄, NMC, or LTO chemistries out of the box. Configuration is stored in OTP memory and cannot be modified post-programming. The BQ27411DRZR-G1A datasheet confirms this specific chemistry mapping in the Device Comparison Table.
How is the BQ27411DRZR-G1A powered in the battery pack?
The BQ27411DRZR-G1A derives power directly from the battery cell via the BAT pin, feeding an internal 1.8-V LDO regulator whose output appears on the VDD pin. No external supply is needed-the LDO operates from 2.45 V to 4.5 V and requires only a 0.47-µF ceramic capacitor between VDD and VSS. This architecture allows the BQ27411DRZR-G1A to function autonomously inside sealed battery packs.
Does the BQ27411DRZR-G1A require external calibration or host initialization?
No. The BQ27411DRZR-G1A uses One-Time Programmable (OTP) memory to store configuration parameters-including chemistry ID, data memory code, and firmware version-during final test at the customer factory. Once programmed, the BQ27411DRZR-G1A operates without host-based calibration, download, or initialization sequences. All fuel gauging is performed autonomously using the Impedance Track™ algorithm.
What is the minimum external component count required for BQ27411DRZR-G1A operation?
The BQ27411DRZR-G1A requires only three external components for basic operation: a 10-mΩ, 1% shunt resistor between SRP/SRN and pack terminals; a 0.47-µF ceramic capacitor on VDD–VSS; and a 1-µF ceramic capacitor on BAT–VSS. Pull-up resistors on SDA/SCL are typically provided by the host system. No external crystal, EEPROM, or voltage references are needed-the BQ27411DRZR-G1A integrates all necessary timing and reference functions.
Can the BQ27411DRZR-G1A operate in low-power modes without host interaction?
Yes. The BQ27411DRZR-G1A automatically transitions between NORMAL, SLEEP, HIBERNATE, and SHUTDOWN modes based on activity and timeout conditions. For example, it enters HIBERNATE after 30 minutes of I²C inactivity and SHUTDOWN when VBAT drops below 1.95 V (UVLOIT– threshold). Host commands can force mode changes, but autonomous operation reduces firmware complexity and ensures power savings even if the host is unresponsive.
BQ27411DRZR-G1A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Impedance Track™
- Package/Case:
- 12-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-SON (2.5x4)
BQ27411DRZR-G1A FAQ
1.How can I place an order for BQ27411DRZR-G1A through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ27411DRZR-G1A 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 BQ27411DRZR-G1A reliable?
The price and inventory of BQ27411DRZR-G1A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ27411DRZR-G1A is usually 5 days.
3.What payment methods are accepted for BQ27411DRZR-G1A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ27411DRZR-G1A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ27411DRZR-G1A?
BQ27411DRZR-G1A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ27411DRZR-G1A 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 BQ27411DRZR-G1A?
For technical support, including BQ27411DRZR-G1A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ27411DRZR-G1A requirements.
6.How does Aetrix verify that BQ27411DRZR-G1A is sourced from the original manufacturer or authorized distributors?
All BQ27411DRZR-G1A 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 BQ27411DRZR-G1A meets industry standards.
7.What is the process for return or replacement of BQ27411DRZR-G1A?
All BQ27411DRZR-G1A units undergo pre-shipment inspection (PSI). If there is an issue with BQ27411DRZR-G1A, 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 BQ27411DRZR-G1A part is unused and in its original packaging.
Return procedure for BQ27411DRZR-G1A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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