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Texas Instruments BQ2010SN-D107
- Part No.:
- BQ2010SN-D107
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
BQ2010SN-D107.pdf
- Description:
- IC BATTERY GAS GAUGE 16-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,196
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Product details
Overview
BQ2010SN-D107 from Texas Instruments is a dedicated 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-cell batteries (3.0–6.5 V), supports LED or serial interface output, and performs self-discharge compensation using its internal temperature sensor.
For engineers reviewing the BQ2010SN-D107 datasheet, BQ2010SN-D107 pinout, BQ2010SN-D107 application, or BQ2010SN-D107 equivalent, key selection considerations include its 16-pin narrow SOIC package, 120 µA standby current, dual-mode display control (LED/serial), programmable full-count (PFC) configuration, and integrated EDV/empty detection with latched EMPTY output.
Technical Context
The BQ2010SN-D107 implements analog integration of sense-resistor voltage (VSRO = VSR + VOS) to accumulate charge/discharge counts, with real-time temperature-compensated corrections applied to NAC (Nominal Available Charge), DCR (Discharge Count Register), and self-discharge estimation. Its operational core relies on three-level PROGx inputs to configure PFC, gas gauge scaling, self-discharge rate (NAC64/NAC47/disabled), and display mode (absolute/relative).
It uses a single-wire bidirectional serial interface (DQ) with BREAK-initiated, LSB-first, return-to-one protocol at ≤333 bits/sec, and supports direct LED drive via open-drain LCOM and SEG1–SEG6 outputs. Voltage thresholds-including fixed EDV1 (1.05 V), EDVF (0.95 V), and MCV (2.25 V)-are monitored on the SB pin using an external resistive divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–6.5 V - supports direct operation from 3- or 4-cell NiMH/NiCd packs without external regulator |
| Standby Current | 120 µA typical - enables long-term battery-pack integration with minimal parasitic drain |
| Current Sensing Range | >500:1 - accommodates discharge from 50 mA to 2 A using same sense resistor (e.g., 0.1 Ω) |
| Temperature Compensation | -35°C to +85°C in 10°C steps - adapts charge/discharge/self-discharge calculations per measured TMPGG register value |
| Digital Filter Thresholds | VSRD = -300 µV, VSRQ = +375 µV default - suppresses counting noise below valid charge/discharge activity levels |
| Self-Discharge Rate | Programmable: NAC64, NAC47, or disabled - scales daily self-discharge count based on NAC and temperature step |
| EDV Detection | VEDV1 = 1.05 V, VEDVF = 0.95 V - latched EMPTY output triggers at VEDVF and clears only after valid charge |
Pinout & Package
Package: 16-pin narrow SOIC (SOIC-N16), body width 3.9 mm, lead pitch 0.65 mm - optimized for compact battery-pack PCB layouts requiring ≤12 in² footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 3.0–6.5 V; powers internal circuitry and drives LCOM output when LEDs are active |
| VSS | System ground | Single-point ground reference for SR, SB, and all analog sensing - critical for offset voltage (VOS ≤ ±150 µV) integrity |
| SR | Sense resistor high-side input | Monitors voltage drop across series sense resistor; polarity determines charge (+) vs. discharge (–) integration |
| SB | Single-cell battery voltage monitor | High-impedance input for resistive divider; enables EDV/EDVF/MCV detection and battery presence validation |
| DQ | Serial I/O | Open-drain bidirectional pin; requires external pull-up; implements BREAK/command/data protocol for register access |
| LCOM | LED common anode driver | Open-drain switch sourcing current to SEG1–SEG6; off during initialization to read PROGx pull-up/pull-down states |
| SEG1/PROG1 – SEG6/PROG6 | Dual-function terminals | Segment outputs for LED display OR three-level inputs (H/Z/L) configuring PFC, scaling, self-discharge, and display mode |
| EMPTY | Empty battery indicator | Open-drain output latched low after EDVF detection; high-impedance only upon valid charge initiation |
| DISP | Display enable control | Active-low signal enabling LED display; floating enables auto-display during |VSRO| ≥ 4 mV activity |
| REF | Voltage reference output | Provides stable reference for external transistor-based regulator - extends operation beyond 4 cells |
Key Features
| Feature | Design Value |
|---|---|
| Conservative charge estimation | Uses validated NAC/LMD learning algorithm and dual-threshold EDV detection to avoid premature "empty" warnings |
| Integrated self-discharge compensation | Applies temperature-dependent NAC64/NAC47 rates derived from internal TMPGG register - no external thermistor required |
| Flexible display interface | Supports both direct 5-/6-segment LED drive (via LCOM+SEGx) and serial data output (DQ) for host MCU integration |
| Configurable full-count reference | PFC programmed via PROG1–PROG4 selects 22528–49152 counts (10.0–614 mVh), enabling precise match to battery capacity × sense-resistor value |
| Robust communication protocol | Asynchronous, LSB-first, BREAK-initiated serial interface tolerates noisy battery-pack environments without clock lines or complex timing |
Applications
| Smart Power Tools | Medical Portable Devices |
|---|---|
Use Scenario: Cordless drill/driver with 4-cell NiCd pack requiring accurate runtime prediction and low-battery warning before motor stall. IC Role / Device Role / Timing Role: BQ2010SN-D107 acts as primary gas gauge, measuring charge/discharge through sense resistor and updating NAC register in real time while compensating for motor surge currents and ambient temperature shifts. Use Value: Enables precise segment-based LED fuel gauge and latched EMPTY output to trigger audible alert before critical voltage drop, preventing unexpected shutdown during surgery prep or patient transport. | Use Scenario: Battery-powered infusion pump operating on 3-cell NiMH with strict runtime compliance and regulatory traceability requirements. IC Role / Device Role / Timing Role: BQ2010SN-D107 serves as standalone fuel monitor, using SB pin to validate cell voltage against EDV1/EDVF thresholds and serial interface to log NAC/LMD history for audit trails. Use Value: Provides conservative, repeatable capacity tracking across clinical shifts and temperature fluctuations, supporting FDA-required battery life documentation without host MCU overhead. |
| Two-Way Radio Packs | Emergency Lighting Systems |
Use Scenario: Rechargeable battery pack for handheld UHF radios used in public safety, subject to intermittent high-current transmit bursts and wide ambient temperature swings. IC Role / Device Role / Timing Role: BQ2010SN-D107 functions as embedded gas gauge, applying fast-discharge compensation above –4 mV and temperature-adapted discharge factors to maintain accuracy during burst transmission. Use Value: Delivers reliable "low battery" indication via EMPTY output even after repeated short-duration discharges, eliminating false alarms caused by voltage recovery between transmissions. | Use Scenario: UL924-compliant emergency egress lighting with sealed NiCd backup battery requiring fail-safe end-of-life monitoring and maintenance alerts. IC Role / Device Role / Timing Role: BQ2010SN-D107 operates as autonomous capacity tracker, using self-discharge compensation and CI flag to detect aging-induced capacity loss over multi-year service life. Use Value: Triggers maintenance alert via CPI register after 64 charges without LMD update - directly supporting NFPA 101 inspection intervals and battery replacement scheduling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery fuel gauging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ2013SN | Enhanced version with improved INL error (±1% vs. ±2%), wider VCC range (2.7–6.5 V), and added EEPROM for persistent calibration data | Supports longer-term field recalibration and tighter accuracy requirements in medical or industrial logging systems | Select BQ2013SN when traceable, field-updatable calibration and sub-1% integrated non-linearity are mandatory |
| MAX1660EAP+ | Integrates precision ADC, microcontroller, and SMBus interface; requires external firmware; higher quiescent current (300 µA) | Enables custom algorithms and multi-chemistry support (Li-ion, LiFePO₄) but increases BOM and firmware validation burden | Choose MAX1660EAP+ only when cross-chemistry flexibility and host-controlled state estimation outweigh cost and complexity penalties |
Compared with BQ2013SN and MAX1660EAP+, the BQ2010SN-D107 offers lowest system-level integration effort for NiMH/NiCd packs, requiring no external memory or firmware development while delivering production-ready accuracy and robustness in constrained space/power budgets.
Availability
BQ2010SN-D107 is available at Aetrix Electronics and suitable for smart power tools, portable medical devices, two-way radio battery packs, emergency lighting systems, and industrial handheld instruments requiring stable component supply and long-lifecycle support.
Supply support for BQ2010SN-D107 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 decades of battery management IP investment.
The BQ2010SN-D107 belongs to TI's legacy battery fuel gauge IC family, designed specifically for cost-sensitive, high-reliability NiMH/NiCd battery-pack applications where simplicity, low power, and proven analog integration outweigh programmability needs.
FAQ
What is the primary function of the BQ2010SN-D107 in a battery system?
The BQ2010SN-D107 serves as a dedicated analog gas gauge IC that continuously monitors battery charge and discharge activity by integrating voltage across a series sense resistor, then applies temperature- and rate-based compensation to deliver conservative, repeatable estimates of nominal available charge (NAC). It does not manage charging or protection - its sole role is accurate fuel-level reporting for NiMH/NiCd chemistries.
How does the BQ2010SN-D107 handle self-discharge compensation without an external temperature sensor?
The BQ2010SN-D107 uses its internal temperature sensor to determine ambient die temperature in 10°C steps (TMPGG register), then applies pre-characterized self-discharge rates - NAC64, NAC47, or disabled - scaled per temperature bin. For example, at 20–30°C (TMPGG = 6x), NAC64 yields ~64 × NAC counts per day; this rate doubles per +10°C step up to >70°C, eliminating need for external thermistors or calibration.
Can the BQ2010SN-D107 be used with lithium-based batteries?
No - the BQ2010SN-D107 is explicitly designed and characterized for NiMH and NiCd battery chemistries. Its EDV thresholds (1.05 V / 0.95 V), self-discharge models, charge efficiency compensation tables, and voltage reference architecture assume nickel-based cell behavior. Using it with Li-ion or LiFePO₄ would produce inaccurate capacity estimates and unreliable EMPTY signaling due to mismatched voltage profiles and degradation mechanisms.
What is the significance of the PROG1–PROG6 pins on the BQ2010SN-D107?
PROG1–PROG6 are multifunction pins that serve as both LED segment drivers (SEG1–SEG6) and three-level (H/Z/L) configuration inputs. PROG1–PROG4 set the Programmed Full Count (PFC) and gas gauge scaling factor; PROG5 selects self-discharge rate (NAC64/NAC47/disabled); PROG6 chooses display mode (absolute/relative) and NAC reset behavior. Their state is sampled at power-up or reset to configure core gas gauge parameters without serial commands.
How does the BQ2010SN-D107 ensure accuracy during high-current transient events like motor startup?
The BQ2010SN-D107 employs a digital magnitude filter (DMF) with programmable thresholds (default VSRD = –300 µV, VSRQ = +375 µV) to ignore brief voltage spikes on the SR pin. It also applies dynamic discharge compensation - increasing the correction factor by 0.05 per 10°C step below 10°C - and uses fast-discharge detection (|VSRO| < –4 mV) to activate display and adjust counting rates, preserving NAC integrity during surges.
BQ2010SN-D107 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-D107 FAQ
1.How can I place an order for BQ2010SN-D107 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2010SN-D107 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-D107 reliable?
The price and inventory of BQ2010SN-D107 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2010SN-D107 is usually 5 days.
3.What payment methods are accepted for BQ2010SN-D107?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2010SN-D107 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2010SN-D107?
BQ2010SN-D107 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2010SN-D107 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-D107?
For technical support, including BQ2010SN-D107 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2010SN-D107 requirements.
6.How does Aetrix verify that BQ2010SN-D107 is sourced from the original manufacturer or authorized distributors?
All BQ2010SN-D107 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-D107 meets industry standards.
7.What is the process for return or replacement of BQ2010SN-D107?
All BQ2010SN-D107 units undergo pre-shipment inspection (PSI). If there is an issue with BQ2010SN-D107, 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-D107 part is unused and in its original packaging.
Return procedure for BQ2010SN-D107:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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