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Texas Instruments BQ2010SN-D107TR
- Part No.:
- BQ2010SN-D107TR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
BQ2010SN-D107TR.pdf
- Description:
- IC GAS GAUGE MULTI-CHEM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,186
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Product details
Overview
BQ2010SN-D107TR from Texas Instruments is a NiMH/NiCd battery gas gauge IC that monitors charge/discharge current via sense-resistor voltage drop, compensates for temperature and rate effects, and delivers conservative, repeatable available-charge estimation across >500:1 current range. It operates directly from 3–4 cells (3.0–6.5 V), supports LED or serial interface output, and enables battery-pack integration with 120 µA standby current.
For engineers reviewing the BQ2010SN-D107TR datasheet, BQ2010SN-D107TR pinout, BQ2010SN-D107TR application, or BQ2010SN-D107TR equivalent, key selection considerations include its 16-pin narrow SOIC package, dual-mode LED/serial communication interface, self-discharge compensation using internal temperature sensor, programmable full-count (PFC) configuration, and support for relative or absolute capacity display modes.
Technical Context
The BQ2010SN-D107TR implements analog current integration with digital compensation: it measures voltage across an external sense resistor (SR pin), applies real-time temperature- and rate-based corrections to charge/discharge counts, and estimates self-discharge using internal 10°C-step temperature sensing (–35°C to +85°C). Its NAC (Nominal Available Charge) register updates dynamically based on LMD (Last Measured Discharge) learning during full discharge cycles.
It features a single-wire bidirectional serial interface (DQ pin) with asynchronous return-to-one protocol (≤333 bits/sec), open-drain EMPTY output for end-of-discharge detection at 0.95 V per cell, and six dual-function SEG/PROG pins enabling hardware-programmable PFC, gas gauge scaling, self-discharge rate (NAC64/NAC47/disabled), and display mode (relative/absolute).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–6.5 V - powers directly from 3–4 NiMH/NiCd cells without external regulator in most configurations |
| Standby Current | 120 µA typical - enables long-term battery-pack monitoring with minimal parasitic drain |
| Current Sensing Range | >500:1 - supports accurate charge/discharge measurement from ~50 mA to 2 A using standard sense resistors |
| Temperature Compensation | –35°C to +85°C in 10°C steps - adapts charge/discharge/self-discharge calculations to actual thermal conditions |
| Digital Filter Thresholds | VSRQ = +375 µV / VSRD = –300 µV default - suppresses counting noise below valid charge/discharge activity levels |
| LED Interface | 6-segment common-anode drive (LCOM + SEG1–SEG6) - enables direct graphical battery-level indication without microcontroller |
| Serial Interface | Single-wire DQ (open-drain) - allows host MCU access to NAC, LMD, TMPGG, BATID, and status registers via simple bit-banged protocol |
Pinout & Package
Package: 16-pin narrow SOIC (5.3 mm × 10.2 mm, 1.27 mm pitch), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 3.0–6.5 V; powers internal circuitry and LCOM LED driver; may require external regulator for >4-cell packs |
| VSS | System ground reference | Single-point ground return required for SR/VSS differential measurement integrity |
| SR | Sense resistor high-side input | Monitors voltage drop across series sense resistor; offset voltage (±50 µV typ.) highly layout-sensitive |
| SB | Single-cell battery voltage monitor | High-impedance input for resistor-divider network; detects EDV1 (1.05 V), EDVF (0.95 V), and MCV (2.25 V) |
| DQ | Serial data I/O | Open-drain bidirectional pin; requires external pull-up; implements command-based read/write protocol (LSB-first, ≤333 bps) |
| EMPTY | End-of-discharge indicator | Open-drain output latched low after valid charge following EDVF detection; signals battery empty state |
| LCOM | LED common anode driver | Open-drain switch sourcing current to SEG1–SEG6; disabled during initialization to read PROG resistors |
| SEG1/PROG1 – SEG6/PROG6 | Dual-function terminals | Each serves as LED segment sink (during display) or three-level programming input (H/Z/L) for PFC, scaling, self-discharge, and display mode |
Key Features
| Feature | Design Value |
|---|---|
| Self-discharge compensation | Programmable NAC64/NAC47 rates or disable - corrects NAC decrement based on real-time temperature and elapsed time |
| Capacity learning (LMD) | Automatically updates on full discharge to EDV1 - replaces initial PFC with actual measured capacity, improving long-term accuracy |
| Dual display modes | Relative mode uses LMD as 100% reference; absolute mode uses fixed PFC - enables flexible UI design for pack-level indicators |
| Robust current sensing | Integrated non-linearity ±2% typ., compensated for temp/voltage - maintains accuracy across operating range without calibration |
| Low-power operation | 120 µA standby + <1 µA shutdown (via DISP) - extends battery life in always-connected smart packs |
Applications
| Smart Battery Packs | Portable Medical Devices |
|---|---|
Use Scenario: Integrated into sealed NiMH battery packs for cordless power tools, requiring accurate remaining runtime estimation under variable load and temperature. IC Role / Device Role / Timing Role: Gas gauge IC performing real-time coulomb counting, self-discharge correction, and LED-based state-of-charge indication. Use Value: Enables precise fuel-gauge display without host MCU intervention, reducing BOM cost and firmware complexity while maintaining ±5% capacity accuracy over 300 cycles. | Use Scenario: Embedded in portable infusion pumps where battery depletion must trigger audible/visual alerts before critical shutdown. IC Role / Device Role / Timing Role: Standalone battery monitor providing EMPTY flag assertion at 0.95 V/cell and serial NAC register access for host safety logic. Use Value: Guarantees fail-safe end-of-life detection independent of pump controller software, meeting IEC 60601-1 essential performance requirements. |
| Industrial Handheld Scanners | Emergency Lighting Systems |
Use Scenario: Used in warehouse barcode scanners with intermittent high-current pulses (2 A bursts) and long idle periods. IC Role / Device Role / Timing Role: Current-sensing gas gauge compensating for fast discharge transients and temperature drift during shift-long operation. Use Value: Delivers stable capacity reporting despite >500:1 dynamic current range and ambient shifts from 5°C to 45°C, preventing premature low-battery warnings. | Use Scenario: Deployed in self-contained emergency exit lights with NiCd backup batteries requiring monthly discharge verification. IC Role / Device Role / Timing Role: Autonomous gas gauge executing full-discharge learning cycles and logging LMD updates to validate battery health. Use Value: Automates compliance testing by tracking capacity degradation via CPI register and triggering maintenance alerts after 64 unlearned charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery fuel gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ2013H | Enhanced version with improved INL (±1% typ.), wider VCC range (2.8–6.5 V), and integrated EEPROM for persistent LMD storage | Supports longer-term capacity retention across battery swaps; eliminates need for external memory in field-replaceable packs | Select BQ2013H when EEPROM-backed learning and tighter current-sense accuracy are required for medical or aerospace applications |
| MAX1660 | Pin-compatible 16-pin SOIC gas gauge with SMBus interface, ±0.5% current-sense accuracy, and built-in thermistor ADC | Requires SMBus host; lacks native LED drive but offers higher-resolution temperature monitoring (0.125°C steps) | Select MAX1660 when system already uses SMBus infrastructure and precision thermal profiling is prioritized over standalone LED display |
Compared with BQ2010SN-D107TR, BQ2013H adds nonvolatile memory for robust learning persistence, while MAX1660 trades LED simplicity for SMBus integration and finer thermal resolution-neither is pin-compatible nor drop-in; both require PCB and firmware adaptation.
Availability
BQ2010SN-D107TR is available at Aetrix Electronics and suitable for smart battery packs, portable medical devices, industrial handheld scanners, and emergency lighting systems requiring stable component supply and long-lifecycle support.
Supply support for BQ2010SN-D107TR 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 broad industrial and automotive qualification.
The BQ2010SN-D107TR belongs to TI's battery management IC portfolio, designed specifically for cost-sensitive, space-constrained NiMH/NiCd fuel gauging in consumer and industrial battery packs where MCU-less LED indication and learning-based accuracy are critical.
FAQ
What is the primary function of the BQ2010SN-D107TR?
The BQ2010SN-D107TR is a dedicated gas gauge IC that accurately estimates available charge in NiMH and NiCd batteries by integrating voltage across an external sense resistor, applying temperature- and rate-based compensation, and updating capacity via learned discharge cycles. Its core function is autonomous, conservative fuel gauging without host processor dependency - a capability central to the BQ2010SN-D107TR's architecture and validated across its datasheet specifications.
Does the BQ2010SN-D107TR support lithium-ion batteries?
No, the BQ2010SN-D107TR is explicitly designed for nickel-based chemistries (NiMH and NiCd) and does not support lithium-ion or lithium-polymer batteries. Its voltage thresholds (EDV1 = 1.05 V/cell, EDVF = 0.95 V/cell), self-discharge models, and charge-efficiency compensation factors are calibrated for NiMH/NiCd characteristics. Using the BQ2010SN-D107TR with Li-ion cells would result in incorrect capacity estimation and premature EMPTY flag assertion.
How does the BQ2010SN-D107TR handle temperature compensation?
The BQ2010SN-D107TR uses an internal temperature sensor with 10°C resolution (–35°C to +85°C) to adapt charge efficiency, discharge compensation, and self-discharge estimation. Temperature data appears in the TMPGG register (02h) and directly modulates NAC updates: for example, discharge compensation increases by 0.05 per 10°C step below 10°C, and self-discharge rate doubles per 10°C rise above 20°C. This behavior is fully specified in the BQ2010SN-D107TR datasheet and confirmed in its functional description.
Can the BQ2010SN-D107TR operate without a microcontroller?
Yes, the BQ2010SN-D107TR can operate autonomously using its integrated LED display interface: LCOM and SEG1–SEG6 drive up to six segments directly, with display mode (relative/absolute) and thresholds set via PROG pins. No microcontroller is needed for basic fuel-gauge indication. The serial interface (DQ) is optional and used only when host readback of NAC, LMD, or status registers is required - making the BQ2010SN-D107TR uniquely suited for MCU-less battery pack designs.
What is the significance of the "D107TR" suffix in BQ2010SN-D107TR?
The "D107TR" suffix denotes Texas Instruments' tape-and-reel packaging variant for the BQ2010SN-D107TR: "D" indicates SOIC package, "107" specifies the reel size and orientation per TI's internal ordering code, and "TR" confirms tape-and-reel delivery (typically 2,500 units per reel). This suffix does not indicate functional differentiation from other BQ2010SN variants - all share identical electrical specifications, pinout, and firmware - and is purely a logistics identifier for the BQ2010SN-D107TR part number.
BQ2010SN-D107TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (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:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
BQ2010SN-D107TR FAQ
1.How can I place an order for BQ2010SN-D107TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2010SN-D107TR 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 BQ2010SN-D107TR reliable?
The price and inventory of BQ2010SN-D107TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2010SN-D107TR is usually 5 days.
3.What payment methods are accepted for BQ2010SN-D107TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2010SN-D107TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2010SN-D107TR?
BQ2010SN-D107TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2010SN-D107TR 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 BQ2010SN-D107TR?
For technical support, including BQ2010SN-D107TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2010SN-D107TR requirements.
6.How does Aetrix verify that BQ2010SN-D107TR is sourced from the original manufacturer or authorized distributors?
All BQ2010SN-D107TR 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 BQ2010SN-D107TR meets industry standards.
7.What is the process for return or replacement of BQ2010SN-D107TR?
All BQ2010SN-D107TR units undergo pre-shipment inspection (PSI). If there is an issue with BQ2010SN-D107TR, 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 BQ2010SN-D107TR part is unused and in its original packaging.
Return procedure for BQ2010SN-D107TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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