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Analog Devices Inc./Maxim Integrated MAX17311G+T
- Part No.:
- MAX17311G+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MAX17311G+T.pdf
- Description:
- MODEL GAUGE M5 1S TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,577
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Product details
Overview
The MAX17311G+T from Analog Devices is a standalone 1-cell Li-ion/polymer fuel gauge IC with integrated protector, ModelGauge m5 algorithm, SHA-256 authentication, and battery internal self-discharge (ISD) detection. It monitors voltage, current, temperature, and state-of-charge with 24µA active quiescent current, delivers dynamic power estimation, and enforces JEITA-compliant charging prescriptions in smart battery packs for wearables and medical devices.
For engineers reviewing the MAX17311G+T datasheet, MAX17311G+T pinout, MAX17311G+T application, or MAX17311G+T equivalent, this page provides verified technical context, package mapping to 15-bump WLP (0.5mm pitch), ModelGauge m5 accuracy claims, ISD detection capability, and two validated alternative fuel gauges with documented functional and protection-level differences.
Technical Context
The MAX17311G+T implements a dual-sensing architecture: coulomb counting for short-term capacity linearity and open-circuit voltage (OCV) modeling for long-term SOC stability, fused via the ModelGauge m5 EZ algorithm. It supports both I²C and 1-Wire interfaces and includes dedicated hardware comparators for overvoltage, overcurrent, over/undertemperature, and short-circuit protection using external high-side N-FETs.
It integrates nonvolatile memory (122 bytes user space + life logging), SHA-256 engine with 160-bit secret key, and a unique 64-bit ID to prevent pack cloning. The IC enables zero-volt charging, ideal diode discharge during charge fault, and SmartEmpty™ undervoltage management - all configurable via registers including nVPrtTh1 (1D0h), nIPrtTh1 (1D3h), and nTPrtTh1 (1D1h).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count | 1-cell Li-ion/polymer only; not configurable for multi-cell stacks. |
| Quiescent Current | 24µA active (FETs enabled); enables >1-year shelf life in hibernate mode (18µA). |
| Fuel Gauge Algorithm | ModelGauge m5 EZ: combines coulomb count + OCV-based SOC for ±1% typical accuracy across aging, temperature, and load. |
| Protection Functions | Overvoltage, overcurrent, short-circuit, over/undertemperature, overcharge, and internal self-discharge detection (ISD). |
| Authentication | Hardware-accelerated SHA-256 with 160-bit secret key and unique 64-bit IC ID for anti-cloning. |
| Interface | I²C (2-wire) and 1-Wire®; ALRT/PIO pin supports pushbutton wakeup and fault signaling. |
| Dynamic Power | Real-time calculation of max safe system output power without violating minimum input voltage. |
Pinout & Package
The MAX17311G+T is packaged in a lead-free, 1.7mm × 2.5mm, 15-bump WLP with 0.5mm pitch. This ultra-compact package targets space-constrained battery packs in wearables and medical sensors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ALRT/PIO | Programmable I/O / Alert Output | Configurable as interrupt (e.g., SOC low, fault), pushbutton input, or general-purpose I/O with internal pull-up. |
| SDA/DQ | Data Line (I²C or 1-Wire) | Shared bidirectional data pin; requires external pull-up for I²C, no pull-up needed for 1-Wire. |
| SCL/OD | Serial Clock / Open-Drain Output | I²C clock input; when used as OD, functions as open-drain status output (e.g., CHG/DSG FET status). |
| CSN | Current Sense Negative | Low-side current sense reference; connects to battery pack negative terminal (PK−) via sense resistor. |
| CSP | Current Sense Positive | High-side current sense input; connects to battery pack positive (PK+) side of sense resistor. |
| TH | Thermistor Input | Analog input for NTC thermistor; measures die and/or external battery temperature with 10-bit ADC resolution. |
| GND | Ground Reference | Analog/digital ground plane connection; must be low-impedance and separate from high-current return paths. |
| REG | Regulator Output | Internal LDO output (1.8V) powering internal logic; decoupled with 0.1µF capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| ModelGauge m5 EZ Algorithm | Delivers %SOC, mAh capacity, time-to-empty/full, cycle count, and Cycle+™ age forecast without factory calibration. |
| Battery Internal Self-Discharge Detection | Identifies abnormal self-discharge rates in sealed packs - exclusive to MAX17310/MAX17311 variants per datasheet Section 39. |
| JEITA Charging Prescription | Automatically adjusts charge voltage/current based on real-time temperature zones (cold/hot/normal) per JEITA standard. |
| SHA-256 Authentication Engine | Prevents unauthorized battery pack replication using challenge-response protocol with stored 160-bit secret key. |
| Pushbutton Wakeup | Eliminates system-side always-on consumption by enabling wake-from-ship mode (<0.02µA) via mechanical button press. |
Applications
| Smart Wearables | Medical Monitoring Devices |
|---|---|
|
Use Scenario: Compact smartwatch battery pack requiring accurate remaining runtime and tamper-resistant authentication. IC Role / Device Role / Timing Role: Standalone fuel gauge + protector managing charge/discharge safety and reporting SOC to host MCU via I²C. Use Value: ±1% SOC accuracy over lifetime enables reliable low-battery warnings; SHA-256 prevents counterfeit battery substitution. |
Use Scenario: Portable ECG or glucose monitor with regulated 3.7V Li-ion supply and strict safety certification requirements. IC Role / Device Role / Timing Role: Primary protection controller enforcing overtemperature cutoff and JEITA-compliant charging during clinical use. Use Value: Integrated ISD detection identifies failing cells before thermal runaway; SmartEmpty™ ensures graceful shutdown at safe residual voltage. |
| Digital Action Cameras | Smart Battery Packs |
|
Use Scenario: High-drain 4K video recording where instantaneous power delivery must avoid brownouts during burst writes. IC Role / Device Role / Timing Role: Dynamic power estimator calculating real-time max safe load current without violating system input voltage floor. Use Value: Prevents unexpected shutdown during peak video encoding by limiting system load to validated power envelope. |
Use Scenario: Rechargeable tool battery with OEM branding, firmware lock, and field-replaceable cell validation. IC Role / Device Role / Timing Role: Pack-side security anchor providing unique ID, SHA-256 challenge-response, and nonvolatile history logging. Use Value: 100-entry life log captures fault events and usage cycles for warranty analytics; 122-byte NV user space stores calibration or serial data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fuel gauge with protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17310G+T | Identical pinout, same WLP package, identical ISD and SHA-256 features; differs only in factory-programmed nDesignCap register value. | Targeted for battery packs with different nominal capacity (e.g., 1200mAh vs. 1500mAh); otherwise drop-in compatible. | Select MAX17310G+T when matching a specific reference design's preconfigured full-capacity setting. |
| BQ34Z100-G1 | 4-cell capable, uses Impedance Track™ algorithm, no integrated SHA-256 or ISD detection; requires external protector FET drivers. | Suitable for higher-voltage industrial packs but lacks anti-cloning and self-discharge monitoring required in consumer medical/wearables. | Choose BQ34Z100-G1 only if multi-cell support and TI ecosystem integration outweigh need for hardware authentication and ISD. |
Compared with MAX17311G+T, MAX17310G+T offers identical functionality with preprogrammed capacity tuning, while BQ34Z100-G1 trades security and single-cell optimization for broader voltage range and TI-specific toolchain support - making MAX17311G+T optimal for compact, authenticated, single-cell medical and wearable systems.
Availability
The MAX17311G+T is available at Aetrix Electronics and suitable for smart wearables, portable medical monitors, and digital action cameras requiring stable component supply, long-term lifecycle support, and secure battery authentication.
Supply support for MAX17311G+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
Analog Devices (acquired Maxim Integrated in 2021) designs precision analog, mixed-signal, and power management ICs for high-reliability applications across industrial, automotive, and healthcare markets.
The MAX173xx family was developed specifically for secure, high-accuracy fuel gauging in space-constrained single-cell Li-ion battery packs - emphasizing safety certification readiness, anti-counterfeiting, and maintenance-free operation over product lifetime.
FAQ
What protection functions does the MAX17311G+T provide?
The MAX17311G+T provides overvoltage, overcurrent, short-circuit, over/undertemperature, overcharge, and battery internal self-discharge (ISD) detection. It controls external high-side N-FETs to enforce these protections and supports JEITA-compliant charging prescriptions. All thresholds are configurable via registers like nVPrtTh1 (1D0h) and nTPrtTh1 (1D1h), and fault events are logged in nFaultLog (1AEh).
Does the MAX17311G+T support SHA-256 authentication?
Yes, the MAX17311G+T integrates a hardware SHA-256 engine with a 160-bit programmable secret key and a unique 64-bit IC ID. This enables secure challenge-response authentication to prevent unauthorized battery pack cloning - a feature confirmed in the General Description and Benefits sections of the official datasheet.
What is the package type and size of the MAX17311G+T?
The MAX17311G+T uses a 1.7mm × 2.5mm, 15-bump WLP (wafer-level package) with 0.5mm pitch. This ultra-compact footprint is specified in the "Package Information" section (page 17) and matches the pinout shown in Figure 24 (WLP configuration). It is lead-free and RoHS-compliant.
How does the ModelGauge m5 algorithm improve fuel gauge accuracy?
The ModelGauge m5 algorithm in the MAX17311G+T fuses coulomb counting (for short-term linearity) with voltage-based OCV modeling (for long-term stability), automatically compensating for cell aging, temperature, and discharge rate. It delivers ±1% typical SOC accuracy without factory calibration - verified in the "ModelGauge m5 EZ Performance" section (page 67) and supported by registers like RepSOC (006h) and Age (007h).
Is internal self-discharge (ISD) detection available on the MAX17311G+T?
Yes, internal self-discharge detection is explicitly supported on the MAX17311G+T. The datasheet confirms ISD is available on MAX17310/MAX17311 variants only (Section 39, p.39), and related registers (e.g., nISDCfg, nISDTh) are defined in the register map. This feature enables early detection of latent cell defects in sealed battery packs.
MAX17311G+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- ModelGauge™
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Fuel Gauge
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- Over Current, Over Temperature, Over/Under Voltage, Short Circuit
- Interface:
- 1-Wire
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3)
MAX17311G+T FAQ
1.How can I place an order for MAX17311G+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17311G+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 MAX17311G+T reliable?
The price and inventory of MAX17311G+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17311G+T is usually 5 days.
3.What payment methods are accepted for MAX17311G+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17311G+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17311G+T?
MAX17311G+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17311G+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 MAX17311G+T?
For technical support, including MAX17311G+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17311G+T requirements.
6.How does Aetrix verify that MAX17311G+T is sourced from the original manufacturer or authorized distributors?
All MAX17311G+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 MAX17311G+T meets industry standards.
7.What is the process for return or replacement of MAX17311G+T?
All MAX17311G+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17311G+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 MAX17311G+T part is unused and in its original packaging.
Return procedure for MAX17311G+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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