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Analog Devices Inc./Maxim Integrated MAX17260SEWL+T
- Part No.:
- MAX17260SEWL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX17260SEWL+T.pdf
- Description:
- IC BATT MON LI-ION 1CELL 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:11,503
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Product details
Overview
The MAX17260SEWL+T from Analog Devices is an ultra-low-power, single-cell lithium-ion/lithium-iron-phosphate fuel gauge IC implementing the ModelGauge m5 EZ algorithm. It performs precision voltage (±20mV), current (±1% reading), and temperature (±1°C) measurements, supports both high-side and low-side current sensing with 1mΩ–1000mΩ sense resistors, and delivers accurate state-of-charge (%), remaining capacity (mAh), time-to-empty/full, and battery aging metrics - deployed in wearables, smartwatches, and medical monitors.
For engineers reviewing the MAX17260SEWL+T datasheet, MAX17260SEWL+T pinout, MAX17260SEWL+T application, or MAX17260SEWL+T equivalent, this page provides verified technical context, package-specific pin functions, real-world design meaning of key specs, and two confirmed alternative fuel gauges for battery management system integration.
Technical Context
The MAX17260SEWL+T integrates a 12-bit ADC, internal 32kHz oscillator, and 1.8V LDO regulator to support autonomous operation without external timing or power components. Its ModelGauge m5 EZ core fuses coulomb counting with voltage-based estimation and real-time temperature compensation - eliminating battery characterization, idle/full/empty calibration, and coulomb-counter drift.
It features dual-current-sensing architecture: CSN detects configuration at startup to auto-select high-side (CSPH/CSN) or low-side (CSPL/GND) topology, while TH enables thermistor-based or internal die-temperature measurement. Alert logic on ALRT supports configurable thresholds for voltage, SOC, temperature, current, and 1% SOC change.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Current | 5.1μA hibernate mode - enables multi-year runtime in always-on wearable devices without compromising fuel gauge accuracy. |
| Voltage Measurement | ±20mV error over -40°C to +85°C - ensures reliable cell voltage tracking across industrial temperature ranges. |
| Current Sensing Range | ±51.2mV full-scale input - supports 1mΩ–1000mΩ sense resistors, enabling flexible trade-offs between power loss and resolution. |
| Temperature Accuracy | ±1°C internal sensor - eliminates need for external thermistor in cost-sensitive applications where ±1°C suffices. |
| I²C Interface | Up to 400kHz standard-mode - compatible with legacy microcontrollers and avoids timing constraints of fast-mode I²C. |
| State-of-Charge Output | 0.0625% resolution (RepSOC register) - provides fine-grained SOC reporting for UI-level battery percentage display. |
| Time-to-Empty Estimation | Dynamic calculation under theoretical load - enables predictive low-battery warnings before critical shutdown. |
Pinout & Package
MAX17260SEWL+T is packaged in a lead-free, 0.4mm pitch, 1.5mm × 1.5mm, 9-pin Wafer-Level Package (WLP) with bottom-side solder bumps. The WLP footprint minimizes PCB area and thermal resistance for space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TH | Thermistor Input / Battery Detect | Connects to NTC thermistor for external temperature sensing; also detects battery insertion/removal via voltage threshold (91–99% VBATT). |
| BATT | Battery Voltage Sense & Power Supply | Direct connection to cell anode; powers IC and measures cell voltage - requires 0.1μF bypass capacitor to GND. |
| SCL / SDA | I²C Clock / Data Bus | Open-drain, 400kHz-compatible interface with internal pulldowns - enables bus disconnection detection without external components. |
| ALRT | Configurable Alert Output | Active-low open-drain output signaling voltage, SOC, temperature, current, or 1% SOC-change events - pulled up externally. |
| CSN | Sense Resistor Negative Terminal | Auto-detects high-side vs. low-side configuration at startup; Kelvin-connected to system side (high-side) or cell side (low-side). |
| CSPH | High-Side Positive Sense | Used only in high-side sensing: Kelvin-connected to system side of external sense resistor; tied to BATT in low-side mode. |
| GND/CSPL | Ground / Low-Side Positive Sense | Shared terminal: serves as IC ground and low-side sense point - Kelvin-connected to cell side of sense resistor. |
| REG | 1.8V Regulator Output | Stable 1.8V supply for internal circuitry; requires 0.47μF ceramic capacitor to GND - must not be loaded externally. |
Key Features
| Feature | Design Value |
|---|---|
| ModelGauge m5 EZ Algorithm | Eliminates battery characterization and calibration cycles - reduces firmware development time and enables drop-in deployment across Li+, LiFePO₄, and variant chemistries. |
| Auto-Detect Sensing Topology | CSN pin voltage analysis at power-up automatically configures high-side or low-side current sensing - removes manual configuration and layout dependency. |
| Dual Temperature Sensing | Switchable between internal die sensor (±1°C) and external NTC thermistor - balances accuracy, cost, and board space based on application requirements. |
| Dynamic Power Estimation | Registers compliant with Intel DBPT v2 - enables host CPU to safely determine maximum turbo-boost power limits using real-time battery capability data. |
| Battery Aging Metrics | Three independent indicators: capacity fade %, resistance increase %, and cycle count - supports predictive maintenance and end-of-life analytics in medical and industrial devices. |
Applications
| Wearable Health Monitor | Smartwatch Power Management |
|---|---|
Use Scenario: Continuous heart-rate and SpO₂ monitoring with Bluetooth LE transmission every 5 seconds. IC Role / Device Role / Timing Role: Fuel gauge IC providing real-time SOC, time-to-empty, and aging data to the MCU for adaptive sampling rate control and low-battery UI alerts. Use Value: Enables >7-day runtime on a 120mAh Li-ion cell while maintaining ±2% SOC accuracy across temperature and aging - critical for clinical-grade reliability. |
Use Scenario: Always-on display with ambient light sensing, GPS logging, and NFC payments. IC Role / Device Role / Timing Role: Primary battery estimator feeding dynamic power budgeting to application processor and triggering hibernation at 5% SOC. Use Value: Delivers precise time-to-empty under variable load (display backlight, RF, sensors), preventing unexpected shutdown during critical GPS sessions. |
| Portable Medical Sensor | Wireless Hearing Aid |
Use Scenario: FDA-cleared glucose meter with wireless data upload and 2-year shelf life. IC Role / Device Role / Timing Role: Long-term battery health tracker reporting capacity fade and cycle count to cloud diagnostics platform. Use Value: Tracks battery degradation over 500+ charge cycles with <1% annual capacity drift error - satisfies regulatory traceability requirements. |
Use Scenario: Rechargeable in-ear hearing aid with 24-hour runtime and magnetic charging case. IC Role / Device Role / Timing Role: Dual-role fuel gauge and charger coordinator - estimates time-to-full during case charging and prevents overcharge via SOC feedback. Use Value: Achieves ±1.5% SOC accuracy at 10%–20% remaining capacity - eliminates "sudden death" failures common in small Li-ion cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fuel gauge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17055EWP+T | Higher operating current (18μA active), no built-in 1.8V LDO, requires external reference; supports 2-cell stacks. | Targeted at higher-capacity tablets and 2S battery packs - lacks integrated regulation and ultra-low-power hibernate mode. | Select MAX17055EWP+T only when managing >4.2V systems or requiring dual-cell support; MAX17260SEWL+T is superior for sub-5V, size-constrained wearables. |
| BQ27441YZFT-G1 | TI Impedance Track™ algorithm; 12μA typical operating current; no high-side sensing option; supports LiCoO₂/LiMn₂O₄ only. | Optimized for smartphones with standardized LiCoO₂ cells - lacks ModelGauge's LiFePO₄ support and auto-sensing topology. | Choose BQ27441YZFT-G1 for cost-driven smartphone designs with fixed chemistry; MAX17260SEWL+T offers broader chemistry support and lower quiescent power. |
Compared with MAX17055EWP+T and BQ27441YZFT-G1, the MAX17260SEWL+T uniquely combines 5.1μA hibernate current, integrated 1.8V LDO, automatic high/low-side sensing detection, and ModelGauge m5 EZ's zero-characterization deployment - making it the optimal choice for next-gen ultra-portable medical and wearable platforms.
Availability
MAX17260SEWL+T is available at Aetrix Electronics and suitable for wearables, smartwatches, and portable medical devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17260SEWL+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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX17260SEWL+T belongs to Analog Devices' ModelGauge m5 fuel gauge product line, engineered specifically for ultra-low-power, single-cell battery management in space- and energy-constrained portable electronics.
FAQ
What is the primary function of the MAX17260SEWL+T in a battery management system?
The MAX17260SEWL+T serves as a standalone fuel gauge IC that accurately reports state-of-charge (%), remaining capacity (mAh), time-to-empty/full, and battery aging metrics using the ModelGauge m5 EZ algorithm. Unlike traditional coulomb counters, the MAX17260SEWL+T requires no battery characterization or calibration, delivering ±2% SOC accuracy across temperature, load, and aging - making it ideal for wearables and medical devices where firmware simplicity and long-term reliability are critical.
Does the MAX17260SEWL+T support both high-side and low-side current sensing?
Yes, the MAX17260SEWL+T automatically detects and configures for high-side or low-side current sensing at startup by measuring the CSN pin voltage. For high-side sensing, CSPH connects to the system side of the sense resistor and CSN to the cell side; for low-side, CSPL/GND connects to the cell side and CSN to the system side. This eliminates manual configuration and supports flexible PCB layout in compact designs.
What temperature sensing options does the MAX17260SEWL+T provide?
The MAX17260SEWL+T offers dual temperature sensing: an internal die sensor with ±1°C accuracy over -40°C to +85°C, and an external thermistor interface via the TH pin. The TH pin supports standard 10kΩ or 100kΩ NTC thermistors and also enables battery insertion/removal detection. Designers can select based on required accuracy, cost, and board space - no external ADC or biasing circuitry is needed.
How does the MAX17260SEWL+T achieve ultra-low power consumption?
The MAX17260SEWL+T achieves 5.1μA hibernate current through architectural optimizations including a dedicated low-power 32kHz oscillator, optimized ADC duty cycling, and intelligent wake-up triggers. Its ModelGauge m5 EZ algorithm minimizes active measurement frequency while maintaining accuracy - enabling multi-year battery life in always-on devices. Shutdown current is further reduced to 0.9μA, supporting long-term storage without significant self-discharge.
Is the MAX17260SEWL+T compatible with Intel's Dynamic Power Technology standard?
Yes, the MAX17260SEWL+T implements registers compliant with Intel's DBPT v2 (Dynamic Battery Power Technology) specification. This allows host processors to read real-time battery power capability data - such as instantaneous wattage and safe discharge limits - enabling dynamic CPU turbo-boost decisions under complex power conditions. This feature is fully implemented in the MAX17260SEWL+T without requiring additional firmware layers.
MAX17260SEWL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- ModelGauge™
- Package/Case:
- 9-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLP (1.47x1.45)
MAX17260SEWL+T FAQ
1.How can I place an order for MAX17260SEWL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17260SEWL+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 MAX17260SEWL+T reliable?
The price and inventory of MAX17260SEWL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17260SEWL+T is usually 5 days.
3.What payment methods are accepted for MAX17260SEWL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17260SEWL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17260SEWL+T?
MAX17260SEWL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17260SEWL+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 MAX17260SEWL+T?
For technical support, including MAX17260SEWL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17260SEWL+T requirements.
6.How does Aetrix verify that MAX17260SEWL+T is sourced from the original manufacturer or authorized distributors?
All MAX17260SEWL+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 MAX17260SEWL+T meets industry standards.
7.What is the process for return or replacement of MAX17260SEWL+T?
All MAX17260SEWL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17260SEWL+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 MAX17260SEWL+T part is unused and in its original packaging.
Return procedure for MAX17260SEWL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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