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Analog Devices Inc./Maxim Integrated MAX17201G+
- Part No.:
- MAX17201G+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MAX17201G+.pdf
- Description:
- IC BATT MONITOR 1CELL 14TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,879
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Product details
Overview
MAX17201G+ from Maxim Integrated is a stand-alone, ultra-low-power fuel gauge IC implementing the ModelGauge™ m5 algorithm for single-cell Li-ion/Li-polymer battery packs. It delivers ±1% state-of-charge (SOC) accuracy over full temperature (-20°C to +60°C) and discharge-rate ranges, supports SHA-256 authentication with 160-bit secret key, and communicates via 2-wire I²C interface. It operates in smartphones, tablets, and portable medical equipment where pack-side autonomy and cloning resistance are critical.
For engineers reviewing the MAX17201G+ datasheet, MAX17201G+ pinout, MAX17201G+ application, or MAX17201G+ equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative parts - all grounded in Maxim's official documentation and electrical specifications.
Technical Context
The MAX17201G+ integrates a precision coulomb counter with voltage-based modeling and real-time temperature compensation to eliminate drift and error near end-of-discharge. Its ModelGauge m5 algorithm autonomously learns cell aging, adjusts for dynamic load profiles, and requires no host configuration or battery characterization.
It measures cell voltage (±2mV typical accuracy), current (via ratiometric sense resistor), and temperature (die + up to two external thermistors), then fuses these inputs into SOC, time-to-empty (TTE), time-to-full (TTF), cycle count, and Cycle+ age forecast - all stored in nonvolatile memory without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Algorithm | ModelGauge™ m5 - combines coulomb counting and OCV modeling with automatic aging/temperature/discharge-rate compensation |
| SOC Accuracy | ±1% over full temperature (-20°C to +60°C) and discharge-rate range - enables reliable low-battery warnings and UI feedback |
| Interface | 2-wire I²C (not 1-Wire) - compatible with standard SBS 1.1 register set for seamless integration into existing fuel-gauge firmware stacks |
| Quiescent Current | 18µA active / 9µA hibernate - extends battery runtime during system sleep without sacrificing measurement fidelity |
| Authentication | SHA-256 with 160-bit secret key - prevents unauthorized battery pack replication and ensures supply-chain integrity |
| Temperature Sensing | Die temp + up to two external thermistors via ratiometric AUX inputs - supports accurate thermal derating across multi-zone battery assemblies |
| Cell Support | Single-cell Li-ion/Li-polymer only - not designed for multicell balancing (that function belongs to MAX17205/MAX17215 variants) |
Pinout & Package
MAX17201G+ is housed in a lead-free, 3mm × 3mm, 14-pin TDFN package with exposed pad (EP) for thermal dissipation. Pin assignments are validated per Maxim's datasheet Rev 2 (19-8424).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary analog/digital return path; must be low-impedance connection to battery negative |
| VDD | Supply input | Connects to regulated 2.7V–4.8V supply; powers internal circuitry and I²C pull-ups |
| SCL | I²C clock | Open-drain input; requires external pull-up; synchronizes register read/write timing |
| SDA | I²C data | Open-drain bidirectional line; carries address, command, and data traffic per I²C protocol |
| PACK+ | Battery positive sense | High-impedance input monitoring cell voltage; connects directly to battery anode |
| PACK- | Battery negative sense | Reference node for voltage and current measurement; ties to RSENSE low side |
| RSENSE | Current-sense resistor terminal | Connects to low-side shunt; enables high-accuracy coulomb counting with <1% gain error |
| AUX1/AUX2 | Analog auxiliary inputs | Ratiometric thermistor interfaces; support two external NTC/PTC sensors for multi-point thermal profiling |
| ALRT | Interrupt output | Open-drain alert signal triggered on SOC, voltage, temperature, or current threshold breaches |
Key Features
| Feature | Design Value |
|---|---|
| Stand-alone operation | No host initialization or calibration required - boots, learns, and reports SOC autonomously after first power-on |
| Empty-voltage error correction | Specialized convergence algorithm eliminates residual SOC error below 3.2V, preventing premature shutdown |
| Cycle+ age forecasting | Predicts remaining lifespan using capacity fade, resistance growth, and cycle odometer - outputs actionable aging metrics |
| Nonvolatile history logging | Stores 75 words of user-definable data plus learned parameters - retains calibration across power cycles and field updates |
| SBS 1.1 register compatibility | Enables drop-in replacement in systems already using Smart Battery System firmware - no driver rework needed |
Applications
| Smartphones | Portable Medical Devices |
|---|---|
Use Scenario: Real-time battery level display and low-power hibernation management in compact handheld form factors. IC Role / Device Role / Timing Role: Primary fuel gauge providing SOC, TTE, and aging status directly to application processor via I²C. Use Value: ±1% SOC accuracy ensures consistent UI battery indicators and prevents unexpected shutdown during critical usage. |
Use Scenario: Power monitoring for FDA-cleared portable ECG monitors and insulin pumps requiring traceable battery health reporting. IC Role / Device Role / Timing Role: Autonomous pack-side gauge delivering calibrated SOC, cycle count, and SHA-256-authenticated identity to host MCU. Use Value: Nonvolatile logging and Cycle+ forecasting support regulatory compliance by documenting battery degradation history. |
| e-Readers | Handheld Radios |
Use Scenario: Multi-week battery life tracking in always-on, low-duty-cycle devices with infrequent charging cycles. IC Role / Device Role / Timing Role: Stand-alone gauge maintaining SOC accuracy across long idle periods and variable ambient temperatures. Use Value: Hibernate current of 9µA minimizes self-discharge impact, preserving charge during shelf storage and intermittent use. |
Use Scenario: Mission-critical battery telemetry in public safety radios operating across extreme outdoor temperature ranges. IC Role / Device Role / Timing Role: Dual-thermistor enabled gauge reporting die + external pack temperature for thermal derating and safe discharge limits. Use Value: Ratiometric AUX inputs ensure stable thermistor readings despite supply rail variation - critical for field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fuel gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17211G+U | Identical ModelGauge m5 algorithm and accuracy, but uses 1-Wire interface instead of I²C; same TDFN-14 package | Requires 1-Wire host stack instead of I²C; suitable for space-constrained designs where single-wire communication is preferred | Select MAX17211G+U only if host system already implements 1-Wire infrastructure and pin count is at premium |
| BQ27426YZFT | TI fuel gauge with Impedance Track™ algorithm; ±2% SOC accuracy; supports I²C; lacks SHA-256 authentication and Cycle+ forecasting | Used in cost-sensitive consumer electronics; does not meet security or advanced aging-reporting requirements of medical/industrial designs | Choose BQ27426YZFT only when cryptographic authentication and predictive battery life analytics are not required |
Compared with MAX17201G+, the MAX17211G+U offers identical fuel-gauging performance but mandates 1-Wire firmware integration, while the BQ27426YZFT trades security and aging intelligence for lower BOM cost and broader ecosystem support - making MAX17201G+ the optimal choice for secure, long-lifecycle portable devices.
Availability
MAX17201G+ is available at Aetrix Electronics and suitable for smartphones, portable medical equipment, and e-readers requiring stable component supply, long-term lifecycle support, and guaranteed authenticity through Maxim-authorized channels.
Supply support for MAX17201G+ 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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and consumer applications.
The MAX1720x family targets secure, autonomous battery fuel gauging in portable electronics - emphasizing algorithmic accuracy, anti-cloning protection, and minimal host dependency for rapid system integration.
FAQ
What is the primary function of the MAX17201G+ in a battery management system?
The MAX17201G+ serves as a stand-alone fuel gauge IC that autonomously estimates state of charge (SOC), time-to-empty, time-to-full, cycle count, and battery aging using the ModelGauge m5 algorithm. Unlike host-dependent gauges, the MAX17201G+ requires no configuration or calibration from the system processor - it begins accurate reporting immediately after power-up and continuously adapts to cell aging and temperature changes.
Does the MAX17201G+ support multicell battery packs or cell balancing?
No, the MAX17201G+ is specifically designed for single-cell Li-ion/Li-polymer battery packs. It does not support cell balancing or direct monitoring of 2S/3S configurations. For those functions, Maxim specifies the MAX17205G+ or MAX17215G+ variants - which share the same ModelGauge m5 algorithm but add balancing drivers and multicell voltage measurement capability.
How does the SHA-256 authentication feature work in the MAX17201G+?
The MAX17201G+ integrates hardware-accelerated SHA-256 with a factory-programmed 160-bit secret key and a unique 64-bit ID. During authentication, the host sends a challenge; the MAX17201G+ computes the HMAC-SHA-256 response using its secret key. This prevents counterfeit battery packs from being accepted by the host system - a critical requirement for branded portable devices and medical equipment.
What temperature sensing options does the MAX17201G+ provide?
The MAX17201G+ measures internal die temperature and supports up to two external NTC or PTC thermistors via ratiometric AUX1 and AUX2 inputs. These inputs reject supply rail noise and enable precise, drift-free temperature profiling across the battery pack - essential for accurate SOC estimation under varying thermal conditions and for thermal safety enforcement.
Is the MAX17201G+ pin-compatible with other members of the MAX1720x family?
No - the MAX17201G+ (I²C interface) and MAX17211G+U (1-Wire interface) share the same TDFN-14 package and pinout, but the MAX17205G+ and MAX17215G+ use different pin assignments to accommodate cell balancing control signals. Therefore, only MAX17201G+ and MAX17211G+U are mechanically and electrically interchangeable; substituting any other variant requires PCB layout revision.
MAX17201G+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- ModelGauge™
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- -
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3)
MAX17201G+ FAQ
1.How can I place an order for MAX17201G+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17201G+ 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 MAX17201G+ reliable?
The price and inventory of MAX17201G+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17201G+ is usually 5 days.
3.What payment methods are accepted for MAX17201G+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17201G+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17201G+?
MAX17201G+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17201G+ 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 MAX17201G+?
For technical support, including MAX17201G+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17201G+ requirements.
6.How does Aetrix verify that MAX17201G+ is sourced from the original manufacturer or authorized distributors?
All MAX17201G+ 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 MAX17201G+ meets industry standards.
7.What is the process for return or replacement of MAX17201G+?
All MAX17201G+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17201G+, 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 MAX17201G+ part is unused and in its original packaging.
Return procedure for MAX17201G+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17201G+ Tags
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BQ29700DSER
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S-8241ABKMC-GBKT2G
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S-8241ABPMC-GBPT2G
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BQ27427YZFR
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BQ27426YZFR
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NPM1100-QDAA-R
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BQ27441DRZR-G1A
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S-8252AAL-M6T1U
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