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Analog Devices Inc./Maxim Integrated MAX17320G10+
- Part No.:
- MAX17320G10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX17320G10+.pdf
- Description:
- IC BATT FUEL LI-ION 2-4C 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:152
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Product details
Overview
MAX17320G10+ from Analog Devices is a stand-alone 2S–4S lithium-ion/polymer battery fuel gauge IC with integrated protector, internal self-discharge detection, SHA-256 authentication, and ModelGauge m5 EZ algorithm. It delivers ±1% state-of-charge accuracy over full temperature and load range, supports JEITA-compliant charging prescriptions, and uses internal FETs for passive cell balancing. It is deployed in smart battery packs for medical monitors and portable power tools.
For engineers reviewing the MAX17320G10+ datasheet, MAX17320G10+ pinout, MAX17320G10+ application, or MAX17320G10+ equivalent, key selection considerations include its 38μA quiescent current in active protection mode, 2.4mm × 2.6mm 30-bump WLP package, SBS 1.1 register compatibility, and support for up to four thermistor inputs with ±1°C measurement accuracy.
Technical Context
The MAX17320G10+ implements dual-path protection logic using external high-side N-FETs for overvoltage, overcurrent, short-circuit, and over/undertemperature conditions, while autonomously managing prequal charging via CHGFET linear control. Its ModelGauge m5 EZ algorithm fuses coulomb counting with voltage-based OCV estimation to maintain SOC accuracy without periodic calibration.
It integrates a configurable always-on LDO (AOLDO*) for system-side critical loads, dynamic power estimation for real-time maximum deliverable power, and nonvolatile memory (84 bytes user data + history logging). Communication occurs via 1-Wire or I²C/SMBus interface with SBS 1.1 register mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2S–4S Li-ion/polymer (6V–16.8V pack voltage); operates across full cell voltage range including zero-volt charge recovery. |
| Quiescent Current | 38μA with FETs enabled - enables multi-year battery pack shelf life without compromising protection responsiveness. |
| Fuel Gauge Accuracy | ±1% SOC error over full temperature (-20°C to +65°C) and discharge rate (0.1C–2C); no factory calibration required. |
| Thermistor Support | Four independent thermistor inputs (TH1–TH4) with ±1°C absolute accuracy - enables precise thermal profiling of multi-cell stacks. |
| Cell Balancing | Internal FET-based passive balancing (up to 4 cells); programmable threshold (±5mV resolution) and duty cycle control. |
| Authentication | SHA-256 with 160-bit secret key + unique 64-bit ID - prevents unauthorized battery cloning in OEM systems. |
| Interface | I²C/SMBus (2-wire) or 1-Wire; SBS 1.1 register set compliance ensures drop-in firmware compatibility with existing smart battery managers. |
Pinout & Package
The MAX17320G10+ is packaged in a lead-free, 2.4mm × 2.6mm, 30-bump, 0.4mm pitch Wafer-Level Package (WLP), optimized for space-constrained battery pack PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CELL1–CELL3* | Cell voltage sense inputs | Direct connection to individual cell terminals (up to 4S); * denotes optional for 2S/3S configurations. |
| PACK+, PACK- | Primary pack voltage terminals | High-current paths for charge/discharge current sensing and overvoltage/undervoltage protection reference. |
| CHG, DIS | High-side N-FET gate drivers | Drive external N-channel MOSFETs for charge and discharge path control; support ideal diode behavior during fault. |
| TH1–TH4 | Thermistor analog inputs | Four independent ADC channels for precision temperature monitoring at cell, PCB, and ambient locations. |
| SDA/DQ, SCL/OD | Bi-mode serial interface | Configurable as I²C (SDA/SCL) or 1-Wire (DQ/OD); enables flexible host controller integration. |
| AOLDO* | Always-on LDO output | Regulated output powering MCU or RTC on system side; remains active even during pack fault or deep discharge. |
| ALRT* | Open-drain alert output | Asserts on protection faults, low SOC, or authentication failure; directly drives LED or microcontroller interrupt. |
Key Features
| Feature | Design Value |
|---|---|
| ModelGauge m5 EZ algorithm | Delivers percent SOC, remaining capacity (mAh), time-to-empty/full, and Cycle+™ age forecast without host-side modeling or calibration. |
| Internal self-discharge detection (ISD) | Identifies abnormal cell leakage currents ≥10μA per cell - enables early detection of defective or aging cells before field failure. |
| JEITA-compliant charging prescription | Automatically adjusts charge voltage/current thresholds based on die and thermistor temperatures - ensures safe charging across environmental extremes. |
| Pushbutton wakeup | Eliminates system-side standby current until physical button press - extends battery shelf life in storage mode. |
| Nonvolatile history logging | Stores 32+ cycles of voltage, current, temperature, and fault event timestamps - supports field failure root-cause analysis. |
Applications
| Medical Health Monitors | Smart Power Tools |
|---|---|
Use Scenario: Rechargeable handheld blood glucose meters and ECG patches requiring accurate runtime prediction and tamper-resistant battery authentication. IC Role / Device Role / Timing Role: Stand-alone fuel gauge and protector managing 2S–3S LiPo packs; provides SOC, aging forecast, and SHA-256 verification during pack insertion. Use Value: Enables FDA-compliant battery life reporting and prevents counterfeit battery use that could compromise diagnostic accuracy. | Use Scenario: Cordless drills and impact drivers with replaceable 4S battery packs operating under high pulse loads and wide ambient temperatures. IC Role / Device Role / Timing Role: Real-time dynamic power estimation and JEITA-compliant charge control ensure safe operation during rapid charge/discharge cycles. Use Value: Prevents thermal runaway during fast charging and extends usable cycle life by >20% via adaptive cell balancing and aging compensation. |
| Digital Action Cameras | Smart Battery Backup Systems |
Use Scenario: Compact 4K action cameras with sealed 3S battery enclosures needing precise low-power fuel gauging and robust overtemperature protection. IC Role / Device Role / Timing Role: Fuel gauge with ±1°C thermistor accuracy and pushbutton wakeup manages cold-weather startup and runtime estimation. Use Value: Delivers accurate "minutes remaining" display down to -10°C and eliminates phantom drain during transport/storage. | Use Scenario: UPS modules for network routers and IoT gateways requiring seamless switchover, long-term self-discharge monitoring, and secure firmware updates. IC Role / Device Role / Timing Role: Dual-role IC providing backup LDO (AOLDO*) for system keep-alive and internal self-discharge detection for predictive maintenance alerts. Use Value: Maintains system uptime during AC loss and triggers replacement alerts when ISD exceeds 15μA/cell over 30 days. |
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 |
|---|---|---|---|
| BQ34Z100-G1 | Standalone impedance-track fuel gauge (no integrated protector); requires external FET drivers and discrete protection IC. | Lacks built-in overvoltage/overcurrent protection and SHA-256 authentication; used where host MCU handles protection logic. | Select when system already includes a dedicated protector IC and prioritizes impedance-track accuracy over integrated safety. |
| MAX17205 | Similar ModelGauge m5 architecture but no internal self-discharge detection, no SHA-256, and no JEITA charging prescription. | Targeted at cost-sensitive consumer electronics without anti-cloning or advanced thermal charge management requirements. | Select only if ISD detection, authentication, and JEITA compliance are not required - reduces BOM count but sacrifices security and longevity features. |
Compared with BQ34Z100-G1 and MAX17205, the MAX17320G10+ uniquely combines certified fuel gauging, full hardware protection, cryptographic authentication, and predictive aging in a single WLP package - eliminating need for companion ICs and reducing PCB area by >35%.
Availability
MAX17320G10+ is available at Aetrix Electronics and suitable for medical health monitors, smart power tools, and digital action cameras requiring stable component supply, long-term lifecycle support, and secure battery authentication.
Supply support for MAX17320G10+ 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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The MAX17320G10+ belongs to Analog Devices' ModelGauge™ m5 smart battery fuel gauge product line, designed specifically for secure, accurate, and maintenance-free battery management in space- and safety-critical portable systems.
FAQ
What protection functions does the MAX17320G10+ provide?
The MAX17320G10+ provides overvoltage, undervoltage, overcurrent, short-circuit, overtemperature, undertemperature, overcharge, and internal self-discharge detection. It controls external high-side N-FETs for charge/discharge path protection and implements SmartEmpty™ for precise end-of-discharge cutoff. All thresholds are programmable via I²C or 1-Wire registers, and the MAX17320G10+ supports JEITA-compliant thermal charge regulation.
How does the ModelGauge m5 EZ algorithm improve fuel gauge accuracy?
The ModelGauge m5 EZ algorithm in the MAX17320G10+ fuses coulomb counting with voltage-based open-circuit voltage (OCV) estimation to eliminate drift and maintain ±1% SOC accuracy across temperature, aging, and load variations. It automatically compensates for cell aging, temperature gradients, and discharge rates without requiring host calibration or learning cycles - delivering reliable runtime estimates directly from the MAX17320G10+.
Does the MAX17320G10+ support cell balancing, and how is it implemented?
Yes, the MAX17320G10+ supports passive cell balancing using internal FETs for up to four series cells. Balancing is triggered when cell voltage mismatch exceeds a programmable threshold (default ±20mV), with adjustable duty cycle and current limit. The MAX17320G10+ balances cells sequentially during rest or charge phases, improving pack longevity and usable capacity - especially critical in 3S–4S power tool and medical battery applications.
What interfaces does the MAX17320G10+ support, and are they software-compatible with legacy systems?
The MAX17320G10+ supports both I²C/SMBus (2-wire) and 1-Wire interfaces, selectable via pin configuration. Its register map is fully SBS 1.1 compliant, enabling direct firmware compatibility with existing smart battery manager platforms. No driver modification is needed when replacing legacy SBS-compliant fuel gauges - the MAX17320G10+ retains identical command structure, data formats, and alarm reporting behavior.
What is the purpose of the AOLDO* pin on the MAX17320G10+?
The AOLDO* pin on the MAX17320G10+ provides a regulated, always-on LDO output capable of powering small system-side loads (e.g., MCU RTC, EEPROM, or sensor bias) independently of the main battery pack state. It remains active even during pack faults, deep discharge, or protection lockout - ensuring continuous system supervision and secure boot functionality. The MAX17320G10+ maintains AOLDO* regulation down to PACK- = 1.5V, supporting fail-safe operation in degraded battery conditions.
MAX17320G10+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- ModelGauge™
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Fuel Gauge
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 4
- 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:
- 24-TQFN (4x4)
MAX17320G10+ FAQ
1.How can I place an order for MAX17320G10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17320G10+ 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 MAX17320G10+ reliable?
The price and inventory of MAX17320G10+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17320G10+ is usually 5 days.
3.What payment methods are accepted for MAX17320G10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17320G10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17320G10+?
MAX17320G10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17320G10+ 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 MAX17320G10+?
For technical support, including MAX17320G10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17320G10+ requirements.
6.How does Aetrix verify that MAX17320G10+ is sourced from the original manufacturer or authorized distributors?
All MAX17320G10+ 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 MAX17320G10+ meets industry standards.
7.What is the process for return or replacement of MAX17320G10+?
All MAX17320G10+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17320G10+, 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 MAX17320G10+ part is unused and in its original packaging.
Return procedure for MAX17320G10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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