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Texas Instruments BQ2013HSN-A514TR
- Part No.:
- BQ2013HSN-A514TR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
BQ2013HSN-A514TR.pdf
- Description:
- IC GAS GAUGE MULTI-CHEM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,845
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Product details
Overview
BQ2013HSN-A514TR from Texas Instruments is a gas gauge IC for rechargeable battery packs, designed to monitor charge/discharge current via sense-resistor voltage drop, estimate self-discharge using internal temperature sensing, and drive five-segment LED displays directly. It supports NiCd, NiMH, and lead-acid chemistries, operates from 4 NiCd or 3 lead-acid cells (≤6.5 V), and delivers ±2% typical integrated non-linearity in current measurement.
For engineers reviewing the BQ2013HSN-A514TR datasheet, BQ2013HSN-A514TR pinout, BQ2013HSN-A514TR application, or BQ2013HSN-A514TR equivalent, key selection considerations include its 16-pin narrow SOIC package, single-wire HDQ serial interface, programmable full-count (PFC) configuration via PROG1–PROG6 pins, LED segment control with LCOM/SEG1–SEG5 dual-function terminals, and support for relative/absolute display modes in electric assist bicycle battery management systems.
Technical Context
The BQ2013HSN-A514TR implements analog front-end current integration with voltage-to-frequency conversion, applying real-time compensation for temperature (−35°C to +85°C in 10°C steps), charge rate (trickle/fast), and self-discharge (programmable 0.2–1.6%/day). Its NAC register tracks nominal available capacity with offset correction (±150 µV programmable), while LMD adapts full-capacity reference based on qualified full-to-empty discharge cycles.
Operation relies on SR pin differential sensing (VSR = VBAT− − VGND), with charge detection at VSRO > 250 µV and discharge at VSRO < −250 µV. The HDQ serial port uses asynchronous return-to-one protocol (≤5 kbps), supporting host read/write of 16+ registers including NACH/NACL, TMPGG, FLGS1/FLGS2, and SDR - all accessible without external microcontroller dependency for basic LED display control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.8 V (4 NiCd) to 6.5 V max; supports direct connection without external regulator for ≤4-cell stacks |
| Current Sensing Accuracy | ±2% typical INL; includes ±0.1%/°C and ±1%/V drift compensation for stable gauging across operating conditions |
| Standby Current | 120 µA typical in self-discharge estimation mode - enables long-term battery pack monitoring without significant parasitic drain |
| Temperature Range | −35°C to +85°C measured in 10°C steps; used for adaptive self-discharge and charge efficiency compensation |
| LED Drive Capability | Direct open-drain LCOM output sourcing VCC; SEG1–SEG5 sink up to 20 mA per segment for five-segment graphical capacity display |
| Serial Interface | Single-wire HDQ bidirectional port (open-drain); ≤5 kbps, LSB-first, command-based register access without dedicated UART |
| End-of-Discharge Thresholds | EDV1 = 1.00 V, EDVF = 0.90 V (scaled via SB resistive divider); latched flags disable display and signal critical low-voltage state |
Pinout & Package
Package: 16-pin narrow SOIC (SOIC-N), 3.9 mm width, 1.75 mm height, 1.27 mm pitch - optimized for compact battery pack PCB layouts requiring ≤12 in² total area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Accepts 4.8–6.5 V; powers internal circuitry and LCOM LED driver; requires 0.1 µF ceramic decoupling near pin |
| VSS | Ground reference | Single-point ground return for SR and analog sections; critical for minimizing VOS error in current sensing |
| SR | Sense resistor input | Monitors voltage drop across series sense resistor (RS); detects charge (VSRO > 250 µV) and discharge (VSRO < −250 µV) |
| LCOM | LED common output | Open-drain switch sourcing VCC to LED anodes; high-impedance when display disabled or during PROG resistor read |
| SEG1/PROG1 – SEG5/PROG5 | Dual-function terminal | Drives LED cathodes (sink mode) or configures PFC/display mode/self-discharge rate via 3-level (H/Z/L) programming resistors |
| PROG6 | Offset compensation input | Selects −150 µV / −75 µV / 0 µV offset correction to minimize VOS-induced gauging error |
| HDQ | Serial I/O | Open-drain bidirectional data line; requires external pull-up; supports register read/write and reset commands |
| RBI | Register backup input | Accepts storage capacitor voltage to retain NAC/LMD registers during VCC dropout below 3.0 V |
| DONE | Charge completion input | Active-high signal from external charger; forces NAC = LMD on fast-charge termination |
| DISP | Display control | Pulled high disables LED display; floating or low activates display during charge/discharge events |
| SB | Scaled battery voltage input | High-impedance input for resistive divider; monitors end-of-discharge voltage thresholds (EDV1/EDVF) |
| REF | Voltage reference output | Provides stable reference for optional external regulator when VCC exceeds 6.5 V or cell count >4 |
Key Features
| Feature | Design Value |
|---|---|
| Self-discharge estimation | Programmable rate (0.2–1.6%/day) with 8-step temperature scaling - maintains capacity accuracy over months of storage |
| Capacity learning | Automatically updates Last Measured Discharge (LMD) after full-to-EDV1 discharge - eliminates need for manual calibration or fixed PFC assumptions |
| LED display control | Integrated five-segment driver with push-button activation and 4-second timer - enables intuitive user-facing battery level indication without MCU intervention |
| Single-wire diagnostics | HDQ port allows host processor to read NAC, temperature, status flags, and battery ID - supports subassembly testing and field firmware updates |
| Robust voltage monitoring | Dual EDV thresholds (EDV1/EDVF) with configurable delay timers (2–7 s) - prevents false low-battery warnings under transient load conditions |
Applications
| Electric Assist Bicycle Battery Packs | Industrial Portable Tools |
|---|---|
Use Scenario: Integrated into 24–36 V NiCd/NiMH battery packs for e-bikes, providing real-time state-of-charge feedback to handlebar displays. IC Role / Device Role / Timing Role: Gas gauge IC performing continuous coulomb counting, self-discharge compensation, and LED-driven capacity visualization. Use Value: Enables accurate remaining range estimation despite variable assist levels and ambient temperature swings - critical for rider confidence and battery longevity. | Use Scenario: Embedded in cordless power tool battery packs (e.g., drills, saws) to indicate charge level during high-pulse discharge cycles. IC Role / Device Role / Timing Role: Primary capacity monitor interfacing with pack protection circuitry and user LED indicators. Use Value: Maintains ±2% gauging accuracy across 0–30 A discharge transients and 0–50°C operating range - reduces unexpected shutdowns during demanding tasks. |
| Medical Mobility Devices | Backup Power Systems |
Use Scenario: Used in battery modules for motorized wheelchairs and scooters, where reliable runtime prediction ensures patient safety. IC Role / Device Role / Timing Role: Standalone fuel gauge managing capacity tracking, low-voltage warning (EDV1/EDVF), and display enablement via DISP pin. Use Value: Delivers stable 120 µA standby current and RBI-backed register retention - preserves capacity history during infrequent use and intermittent charging. | Use Scenario: Deployed in UPS and telecom backup battery strings to monitor aging and predict replacement timing. IC Role / Device Role / Timing Role: Long-term self-discharge estimator and learned capacity tracker feeding maintenance logs via HDQ interface. Use Value: Tracks capacity degradation over time using LMD updates and temperature-compensated DCR - enables predictive maintenance without external sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gas gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ2019GNR | Same 16-pin SOIC package; adds EEPROM for permanent PFC/LMD storage; higher 200 µA standby current | Requires no re-learning after full discharge; better suited for applications needing guaranteed initial accuracy without qualification cycle | Select BQ2019GNR when EEPROM retention of learned capacity is mandatory and 80 µA higher standby is acceptable |
| BQ2010SN | Legacy 16-pin SOIC variant; lacks PROG6 offset adjustment and HDQ register write capability; fixed 0.8%/day self-discharge | No programmable offset or charge compensation; limited to simpler NiCd-only packs with stable thermal profiles | Choose BQ2010SN only for cost-sensitive, thermally stable legacy designs where advanced compensation is unnecessary |
Compared with BQ2013HSN-A514TR, BQ2019GNR offers nonvolatile memory for learned capacity but increases quiescent current, while BQ2010SN sacrifices configurability for lower cost and reduced feature set - making BQ2013HSN-A514TR the optimal balance of adaptability, accuracy, and compact integration for modern power-assist systems.
Availability
BQ2013HSN-A514TR is available at Aetrix Electronics and suitable for electric assist bicycles, industrial portable tools, medical mobility devices, and backup power systems requiring stable component supply, long-term lifecycle support, and precise battery capacity tracking under dynamic load and temperature conditions.
Supply support for BQ2013HSN-A514TR 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 expertise in battery management solutions.
The BQ2013HSN-A514TR belongs to TI's gas gauge IC product line, engineered specifically for cost-sensitive, space-constrained battery packs in power-assist transportation and portable industrial equipment - emphasizing LED-driven usability, self-calibrating accuracy, and minimal external component count.
FAQ
What battery chemistries does the BQ2013HSN-A514TR support?
The BQ2013HSN-A514TR supports NiCd, NiMH, and lead-acid battery chemistries. It achieves accurate gauging by adapting charge/discharge compensation and self-discharge rates to each chemistry's characteristics - for example, using PROG3 to select 0.2%/day for NiCd or 1.6%/day for lead-acid. The BQ2013HSN-A514TR does not support Li-ion or Li-polymer chemistries, as its internal algorithms and voltage thresholds (e.g., EDV1 = 1.00 V) are calibrated specifically for the lower nominal voltages and discharge profiles of Ni-based and lead-acid cells.
How does the BQ2013HSN-A514TR handle battery capacity learning?
The BQ2013HSN-A514TR learns actual battery capacity by updating the Last Measured Discharge (LMD) register after a qualified full-to-empty discharge cycle ending at EDV1. During this cycle, the Discharge Count Register (DCR) accumulates total discharge; if conditions are met - including temperature ≥0°C at EDV1, no partial charges, and self-discharge <6% - the DCR value transfers to LMD. This learned value then becomes the 100% reference for relative display mode and replaces the initial Programmed Full Count (PFC). The BQ2013HSN-A514TR repeats this process automatically across battery life to track aging.
Can the BQ2013HSN-A514TR operate without an external microcontroller?
Yes, the BQ2013HSN-A514TR can operate autonomously without an external microcontroller. Its integrated LED drivers (LCOM/SEG1–SEG5), push-button display activation, and programmable PROG pins allow standalone capacity indication. Functions like charge/discharge counting, self-discharge estimation, EDV1/EDVF flagging, and DONE-triggered NAC updates require no host intervention. The HDQ serial interface is optional - used only for diagnostics, register reads/writes, or advanced configuration; the BQ2013HSN-A514TR delivers full gas gauge functionality out-of-the-box with minimal external components.
What is the purpose of the RBI pin on the BQ2013HSN-A514TR?
The RBI (Register Backup Input) pin on the BQ2013HSN-A514TR provides backup power to retain critical registers - including NAC, LMD, and DCR - when VCC drops below 3.0 V. A storage capacitor connected between RBI and VSS maintains register contents during brief power interruptions or battery removal. When VCC rises above 3.0 V, the BQ2013HSN-A514TR checks for data corruption; if detected, it clears NAC and reloads LMD from PFC. This ensures capacity history survives power cycling, which is essential for accurate long-term gauging in intermittently used devices like e-bikes or medical scooters.
How does the BQ2013HSN-A514TR compensate for temperature effects on battery capacity?
The BQ2013HSN-A514TR compensates for temperature using an internal sensor that reports battery temperature in 10°C steps (−35°C to +85°C) via the TMPGG register. This temperature data adjusts three key functions: (1) self-discharge rate scaling per Table 7 (e.g., doubling per 10°C step), (2) charge efficiency factors for trickle/fast charge per Table 5, and (3) offset correction applied to the SR input. These adaptations ensure the BQ2013HSN-A514TR maintains ±2% current measurement accuracy and stable capacity tracking across the full industrial temperature range without external thermistors or calibration.
BQ2013HSN-A514TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- -
- Fault Protection:
- -
- Interface:
- HDQ
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
BQ2013HSN-A514TR FAQ
1.How can I place an order for BQ2013HSN-A514TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ2013HSN-A514TR 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 BQ2013HSN-A514TR reliable?
The price and inventory of BQ2013HSN-A514TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ2013HSN-A514TR is usually 5 days.
3.What payment methods are accepted for BQ2013HSN-A514TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ2013HSN-A514TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ2013HSN-A514TR?
BQ2013HSN-A514TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ2013HSN-A514TR 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 BQ2013HSN-A514TR?
For technical support, including BQ2013HSN-A514TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ2013HSN-A514TR requirements.
6.How does Aetrix verify that BQ2013HSN-A514TR is sourced from the original manufacturer or authorized distributors?
All BQ2013HSN-A514TR 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 BQ2013HSN-A514TR meets industry standards.
7.What is the process for return or replacement of BQ2013HSN-A514TR?
All BQ2013HSN-A514TR units undergo pre-shipment inspection (PSI). If there is an issue with BQ2013HSN-A514TR, 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 BQ2013HSN-A514TR part is unused and in its original packaging.
Return procedure for BQ2013HSN-A514TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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