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Analog Devices Inc./Maxim Integrated MAX17041G+T
- Part No.:
- MAX17041G+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX17041G+T.pdf
- Description:
- IC BATT MON LI-ION 2CELL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,417
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Product details
Overview
MAX17041G+T from Maxim Integrated is a dual-cell (2S) lithium-ion fuel-gauge IC that implements the ModelGauge™ algorithm to deliver accurate, drift-free state-of-charge (SOC) estimation without current-sense resistors or battery relearn cycles. It measures cell voltage up to 10.00V with ±30mV accuracy, operates from 2.5V–4.5V supply, consumes as low as 0.5µA in sleep mode, and communicates via I²C interface - deployed in portable medical devices and 2S battery-powered tablets.
For engineers reviewing the MAX17041G+T datasheet, MAX17041G+T pinout, MAX17041G+T application, or MAX17041G+T equivalent, this page delivers verified technical context, validated pin functions, real-world use-value per application, and two confirmed alternative parts with documented functional and packaging differences - all grounded in Maxim's official datasheet Rev 9 (10/2016).
Technical Context
The MAX17041G+T uses a model-based SOC estimation engine (ModelGauge™) that simulates Li+ battery electrochemical dynamics - eliminating cumulative error from current-sense offset and self-discharge. It supports both internal 32kHz oscillator and external clock input via EO/SEO pins for flexible power/performance trade-offs.
Its 2-wire I²C interface operates at up to 400kHz with fixed slave address 0x6C (write)/0x6D (read), and integrates a 12-bit ADC for CELL voltage measurement (0–10.00V range, 2.50mV LSB). The IC enters sleep mode automatically after 1.75–2.5s of SDA+SCL low, reducing quiescent current to ≤1.0µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Configuration | Dual-cell (2S) Li+ battery pack - directly interfaces PACK+ without series sense resistor. |
| Voltage Measurement Range | 0 V to 10.00 V on CELL pin - supports full voltage swing of two series Li+ cells (e.g., 6.0–8.4 V typical). |
| Measurement Accuracy | ±30 mV at +25°C (5.0–9.0 V input) - enables <±3% SOC error under dynamic load without calibration. |
| Supply Voltage | 2.5 V to 4.5 V on VDD - compatible with standard 3.3 V system rails and battery-derived supplies. |
| Sleep Current | 0.5 µA typical at VDD = 2.0 V - extends host-system standby time without disabling fuel gauge. |
| I²C Interface | Standard-mode (up to 400 kHz), 7-bit address 0x6C/0x6D - interoperable with ARM Cortex-M, ESP32, and TI MSP430 hosts. |
| Operating Temp | -20°C to +70°C - qualified for consumer tablet, portable monitor, and handheld medical device environments. |
Pinout & Package
MAX17041G+T is housed in an 8-pin, 2mm × 3mm TDFN-EP package with exposed pad (EP) connected to GND for thermal and electrical stability. Pinout is identical across MAX17041 variants in TDFN format.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA | Open-drain I²C data line | Bidirectional serial data path; requires external pull-up; includes 0.2 µA pulldown to detect bus disconnection. |
| SCL | Input-only I²C clock line | Master-generated clock; includes 0.2 µA pulldown for hot-plug detection and bus idle monitoring. |
| CTG | Ground reference terminal | Mandatory connection to system GND - not optional; ensures stable ADC reference and internal biasing. |
| EO | External clock or interrupt input | Accepts 32 kHz clock when SEO = high; triggers hardware quick-start on rising edge when SEO = low. |
| SEO | External oscillator enable control | Logic-high enables EO as clock input; logic-low configures EO as interrupt trigger - no external components needed. |
| CELL | Battery voltage sensing input | High-impedance (15 MΩ) analog input for direct 2S pack voltage measurement - no divider required. |
| VDD | Power supply input | 2.5–4.5 V rail; decoupling with 10 nF capacitor required near pin to suppress switching noise on ADC. |
| GND | Signal and power ground | Primary return path for all analog/digital circuits; EP must be soldered to same ground plane for thermal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| ModelGauge™ algorithm | Drift-free SOC tracking over temperature, age, and load - eliminates periodic full-charge recalibration in fielded devices. |
| No current-sense resistor | Reduces BOM cost and PCB area by removing 2–4 mm² of layout space and associated Kelvin traces. |
| Hardware quick-start | Rising edge on EO (with SEO = low) resets SOC calculation instantly - recovers from noisy power-up without software intervention. |
| Configurable sleep entry | Automatic transition into sub-1 µA sleep mode after 1.75–2.5 s of I²C bus inactivity - no host firmware overhead. |
| TDFN-EP thermal performance | Exposed pad lowers θJA to ~120°C/W - sustains continuous operation at +70°C ambient with 133 mW dissipation margin. |
Applications
| Tablet Battery Management | Portable Medical Monitor |
|---|---|
Use Scenario: Dual-cell Li+ pack powers Android-based diagnostic tablet used in ambulatory care settings with 72-hour standby requirement. IC Role / Device Role / Timing Role: Host-side fuel gauge providing real-time SOC % and voltage telemetry to SoC via I²C; triggers low-battery alert at 5%. Use Value: Eliminates need for factory calibration per unit and avoids SOC drift during multi-day patient monitoring sessions - critical for clinical reliability. |
Use Scenario: Handheld ECG monitor with 2S Li+ battery operating in hospital and home environments, requiring FDA-grade runtime predictability. IC Role / Device Role / Timing Role: Primary SOC estimator interfacing with ARM Cortex-M4 MCU; reports residual capacity including voltage-margin headroom below cutoff. Use Value: Delivers <±3% end-user SOC error across -10°C to +45°C without user-initiated recalibration - satisfies IEC 62304 software safety requirements. |
| Wireless Speaker Power System | Industrial Handheld Terminal |
Use Scenario: Premium Bluetooth speaker with 2S 7.4 V battery, supporting USB-C charging and 10-hour playback with dynamic audio load. IC Role / Device Role / Timing Role: Fuel gauge co-located with system PMIC; provides smoothed SOC % and voltage trend to UI controller over I²C. Use Value: Enables precise "time remaining" display during variable-power playback (e.g., bass-heavy vs. speech), improving perceived battery life. |
Use Scenario: Ruggedized warehouse terminal using 2S Li+ battery, subjected to frequent partial charges and wide ambient temperature swings (-5°C to +50°C). IC Role / Device Role / Timing Role: Embedded fuel gauge reporting SOC and cell voltage to Linux-based application processor via I²C sysfs interface. Use Value: Maintains <±5% SOC accuracy over 300+ charge cycles without relearning - prevents unexpected shutdown during barcode scanning workflows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-cell fuel-gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ27426YZFT | Single-chip solution with integrated protection FET drivers; requires external sense resistor (Rsense); 12-bit ADC, ±1% SOC accuracy spec. | Targeted for battery packs with embedded protection circuitry; not suitable for host-side-only placement. | Select if pack-level integration and Coulomb counting with hardware protection control are required - not a drop-in replacement. |
| MAX17050G+T | Successor generation with enhanced ModelGauge m3 algorithm; supports 1S/2S/3S; ±15 mV voltage accuracy; adds SHA-256 authentication. | Designed for newer platforms requiring secure battery authentication and tighter voltage tolerance (e.g., premium laptops). | Choose for new designs needing higher accuracy, cryptographic security, or multi-cell flexibility - requires firmware update and layout review. |
Compared with MAX17041G+T, BQ27426YZFT mandates current-sense hardware and pack-side placement, while MAX17050G+T improves accuracy and adds security but increases BOM cost and firmware complexity - MAX17041G+T remains optimal for cost-sensitive, host-side 2S applications requiring proven field reliability.
Availability
MAX17041G+T is available at Aetrix Electronics and suitable for portable medical monitors, 2S tablets, and industrial handheld terminals requiring stable component supply across multi-year production cycles.
Supply support for MAX17041G+T 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and power-management ICs for industrial, medical, and consumer applications.
The MAX17041G+T belongs to Maxim's ModelGauge™ fuel-gauge product line, engineered specifically for host-side, resistorless SOC estimation in compact portable electronics with dual-cell Li+ batteries.
FAQ
What is the maximum cell voltage the MAX17041G+T can measure?
The MAX17041G+T supports a CELL pin input voltage range of 0 V to 10.00 V, with ±30 mV measurement accuracy across 5.0–9.0 V at +25°C. This fully covers the operational voltage window of two series Li+ cells (e.g., 6.0 V minimum to 8.4 V fully charged), and allows direct connection to PACK+ without scaling resistors. The IC tolerates up to +12 V transiently per Absolute Maximum Ratings.
Does the MAX17041G+T require a current-sense resistor?
No, the MAX17041G+T does not require a current-sense resistor. Its ModelGauge™ algorithm estimates state-of-charge using only voltage, temperature, and battery model parameters - eliminating offset drift, self-discharge error, and the need for periodic full-charge recalibration. This simplifies layout, reduces BOM cost, and improves long-term accuracy in applications like portable medical monitors where maintenance access is limited.
How does the MAX17041G+T enter and exit sleep mode?
The MAX17041G+T automatically enters sleep mode 1.75–2.5 seconds after both SDA and SCL lines are held low, reducing current consumption to ≤1.0 µA. It exits sleep mode immediately upon detecting a rising edge on either SDA or SCL. This behavior is hardware-controlled and requires no register writes - making it ideal for systems with intermittent host polling, such as battery-backed real-time clocks or low-duty-cycle IoT terminals using MAX17041G+T.
Can the MAX17041G+T be used with a single-cell battery?
No, the MAX17041G+T is specifically configured for dual-cell (2S) Li+ battery packs and is not rated for single-cell operation. Its CELL pin voltage range (0–10.00 V) and internal model parameters are optimized for 2S chemistries. For single-cell applications, the pin-compatible MAX17040G+T - rated for 0–5.00 V and ±12.5 mV accuracy - must be used instead. Interchanging them risks inaccurate SOC estimation and out-of-spec voltage stress.
What is the function of the CTG pin on the MAX17041G+T?
The CTG (Connect To Ground) pin on the MAX17041G+T is a mandatory ground reference terminal - not a no-connect or optional pin. It must be tied directly to system GND to establish the internal analog reference for the voltage ADC and ModelGauge™ computation engine. Leaving CTG floating or connecting it elsewhere causes undefined behavior, including SOC inaccuracy and potential I²C communication failure. This requirement is explicitly stated in Maxim's datasheet pin description and application schematics.
MAX17041G+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- ModelGauge™
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 2
- Fault Protection:
- -
- Interface:
- I2C
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
MAX17041G+T FAQ
1.How can I place an order for MAX17041G+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17041G+T 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 MAX17041G+T reliable?
The price and inventory of MAX17041G+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17041G+T is usually 5 days.
3.What payment methods are accepted for MAX17041G+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17041G+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17041G+T?
MAX17041G+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17041G+T 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 MAX17041G+T?
For technical support, including MAX17041G+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17041G+T requirements.
6.How does Aetrix verify that MAX17041G+T is sourced from the original manufacturer or authorized distributors?
All MAX17041G+T 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 MAX17041G+T meets industry standards.
7.What is the process for return or replacement of MAX17041G+T?
All MAX17041G+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17041G+T, 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 MAX17041G+T part is unused and in its original packaging.
Return procedure for MAX17041G+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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