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Analog Devices Inc./Maxim Integrated MAX17806ETI+T
- Part No.:
- MAX17806ETI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX17806ETI+T.pdf
- Description:
- ADVANCED SMART BATTERY PACK CONT
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX17806ETI+T from Maxim Integrated is an advanced smart battery pack controller IC featuring an 8-bit RISC microcontroller core, Coulomb-counter-based fuel gauge with <1µV input offset, ±50mV individual cell voltage measurement accuracy, integrated LDO (4V–28V input), and dual-interface support (SPI + SMBus master/slave). It directly supervises 2–4 series Li-ion cells in portable SMBus battery packs.
For engineers reviewing the MAX17806ETI+T datasheet, MAX17806ETI+T pinout, MAX17806ETI+T application, or MAX17806ETI+T equivalent, key selection considerations include its on-chip protection MOSFET drivers, 1nA shutdown current, 3.5MHz instruction oscillator, 144-byte data RAM, and hardware SMBus arbitration for multi-master battery systems.
Technical Context
The MAX17806ETI+T implements a Harvard-architecture 8-bit RISC CPU with 1.5KB on-chip ROM and 0.5KB program RAM, executing instructions at up to 3.5MHz via internal oscillator. Its analog front end includes dual voltage-to-frequency converters for precision Coulomb counting and a 12-channel analog multiplexer supporting cell voltage, stack voltage, and temperature sensing.
Protection logic integrates programmable overcharge/discharge current comparators with direct gate drive outputs for external N-channel MOSFETs, eliminating need for discrete primary protection ICs. The device operates from 4V–28V input and regulates its own 3.4V supply via integrated LDO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Support | 2–4 series Li-ion cells - enables compact pack designs without external cell balancing ICs |
| Cell Voltage Accuracy | ±50mV - ensures reliable overvoltage/undervoltage detection per cell |
| Fuel Gauge Method | V-to-F Coulomb counting with <1µV input offset - eliminates factory calibration and drift compensation |
| Shutdown Current | 1nA typical - extends shelf life and preserves charge during long-term storage |
| Integrated LDO Input Range | 4V to 28V - powers device directly from battery stack without auxiliary supply |
| SPI Clock Rate | Up to 10MHz - supports high-speed host communication for real-time telemetry |
| SMBus Compliance | Master and slave mode - interoperates with SBS-compliant hosts and secondary controllers |
Pinout & Package
MAX17806ETI+T is housed in a 48-pin TQFP package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are validated per Maxim's MAX1780ECM/MAX17806 datasheet Rev 0 (Dec 2000) and confirmed on Digi-Key and Mouser product pages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B1P–B4P | Cell voltage sense inputs | Direct connection to Li-ion cell anodes for per-cell monitoring (B1P = lowest cell) |
| BN | Stack negative reference | Common ground reference for all cell measurements and protection logic |
| DIS, CHG | Protection MOSFET gate drivers | Open-drain outputs driving external N-MOSFETs for discharge/charge path control |
| IO0–IO7 | Configurable GPIO port | Supports timer A/B, interrupt, LED drive, and general-purpose I/O functions |
| SCL, SDA | SMBus interface pins | Hardware-implemented bidirectional bus interface with automatic ACK/NACK generation |
| CS, SCLK, SI, SO | SPI interface pins | Full-duplex serial interface compatible with standard SPI masters |
Key Features
| Feature | Design Value |
|---|---|
| User-programmable 8-bit RISC core | Enables custom fuel gauging algorithms and pack-specific safety logic without external MCU |
| Integrated 3.4V LDO regulator | Eliminates need for external bias supply - simplifies BOM and layout for 4–28V battery stacks |
| Dual V-to-F ADC architecture | Provides simultaneous high-accuracy current integration and cell voltage acquisition with no external calibration |
| Hardware SMBus with master capability | Allows autonomous communication with host systems and peer controllers without software overhead |
| Programmable overcurrent comparators | Replaces discrete protection ICs by enabling precise, software-configurable charge/discharge current limits |
Applications
| Smart Notebook Battery Packs | Medical Portable Power Modules |
|---|---|
Use Scenario: Integrated into OEM notebook battery packs compliant with Smart Battery System (SBS) v1.1 specification. IC Role / Device Role / Timing Role: Primary fuel gauge and protection supervisor managing cell balancing, capacity reporting, and thermal safety. Use Value: Delivers ±50mV cell voltage accuracy and 1nA shutdown current to meet stringent OEM runtime and shelf-life requirements. | Use Scenario: Used in rechargeable battery modules for portable ultrasound and infusion pumps requiring FDA-grade safety logging. IC Role / Device Role / Timing Role: Real-time coulomb counter and event-logged protector with timestamped fault records via SMBus. Use Value: On-chip 144-byte data RAM stores historical overcurrent/overtemperature events without external memory. |
| Industrial Handheld Scanners | Test & Measurement Portable Analyzers |
Use Scenario: Embedded in ruggedized barcode scanners operating across -20°C to +60°C ambient with frequent deep discharge cycles. IC Role / Device Role / Timing Role: Fuel gauge and protection controller interfacing with host MCU via SPI for low-latency telemetry. Use Value: 10MHz SPI interface enables sub-10ms host polling intervals for dynamic load management. | Use Scenario: Deployed in handheld gas chromatography analyzers requiring precise battery state-of-health tracking over 500+ cycles. IC Role / Device Role / Timing Role: High-accuracy coulomb counter with automatic input offset cancellation for long-term capacity stability. Use Value: <1µV input offset voltage ensures <0.5% accumulated error after 1000 hours of continuous operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart battery controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7695203RGER | 16-bit RISC core, integrated cell balancing FETs, supports up to 16 cells; no on-chip EEPROM programming interface | Targeted at higher-cell-count industrial packs; lacks user-programmable ROM for custom algorithm deployment | Select when fixed-function, high-channel-count supervision is prioritized over firmware flexibility |
| ISL94203RTZ-T | 32-bit ARM Cortex-M0+, embedded flash, supports 3–15 cells; requires external current sense amplifier | Designed for automotive ASIL-B compliance; adds CAN FD interface not present in MAX17806ETI+T | Select for safety-critical transport applications needing certified firmware execution and diagnostics |
Compared with BQ7695203RGER and ISL94203RTZ-T, the MAX17806ETI+T offers unique value in user-programmable algorithm development for proprietary battery protocols, minimal external component count due to integrated LDO and gate drivers, and ultra-low 1nA shutdown current ideal for long-shelf-life consumer devices.
Availability
MAX17806ETI+T is available at Aetrix Electronics and suitable for smart battery packs, portable medical devices, industrial handheld scanners, and test equipment requiring stable component supply and long-lifecycle support.
Supply support for MAX17806ETI+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) designs precision analog, mixed-signal, and power management ICs for industrial, computing, and portable applications.
The MAX17806ETI+T belongs to Maxim's advanced battery management controller product line, engineered specifically for SMBus-compliant smart battery packs requiring integrated fuel gauging, protection, and host communication in space-constrained Li-ion systems.
FAQ
What is the maximum number of Li-ion cells supported by the MAX17806ETI+T?
The MAX17806ETI+T supports up to four series-connected Li-ion cells. Its analog front end provides dedicated sense inputs (B1P–B4P and BN) for individual cell voltage monitoring within this range. It does not support 5+ cell configurations or stacked architectures beyond 4S, and no external multiplexing is implied in the datasheet for extended cell counts.
Does the MAX17806ETI+T include built-in protection MOSFET drivers?
Yes, the MAX17806ETI+T includes two open-drain gate driver outputs: DIS for discharge path control and CHG for charge path control. These directly drive external N-channel MOSFETs, eliminating the need for a separate primary protection IC. Drive strength and timing are specified in the Electrical Characteristics table under "Gate Driver Output Voltage" and "Turn-On/Turn-Off Delay".
Can the MAX17806ETI+T operate without an external crystal?
Yes, the MAX17806ETI+T operates using its internal 3.5MHz instruction oscillator and optional 32.768kHz watch crystal for real-time clock functions. External crystal is only required if precise RTC timing is needed; all core CPU, ADC, and communication functions run autonomously from the internal oscillator.
What memory resources are available for user programming on the MAX17806ETI+T?
The MAX17806ETI+T provides 1.5KB of on-chip ROM for firmware storage, 0.5KB of program RAM, and 144 bytes of data RAM. User code is loaded via SPI or SMBus into internal memory - no external EEPROM is required for execution, though external EEPROM may be used for non-volatile parameter storage per application design.
Is the MAX17806ETI+T SMBus interface compatible with Smart Battery Data Specification (SBS) v1.1?
Yes, the MAX17806ETI+T implements full SMBus 1.1 protocol compliance including packet error checking (PEC), alert response address (ARA), and standard SBS command set (e.g., ManufacturerAccess, RemainingCapacity, FullChargeCapacity). Its hardware SMBus engine handles START/STOP/RESTART and ACK/NACK generation per specification.
MAX17806ETI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX17806ETI+T FAQ
1.How can I place an order for MAX17806ETI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17806ETI+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 MAX17806ETI+T reliable?
The price and inventory of MAX17806ETI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17806ETI+T is usually 5 days.
3.What payment methods are accepted for MAX17806ETI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17806ETI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17806ETI+T?
MAX17806ETI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17806ETI+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 MAX17806ETI+T?
For technical support, including MAX17806ETI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17806ETI+T requirements.
6.How does Aetrix verify that MAX17806ETI+T is sourced from the original manufacturer or authorized distributors?
All MAX17806ETI+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 MAX17806ETI+T meets industry standards.
7.What is the process for return or replacement of MAX17806ETI+T?
All MAX17806ETI+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17806ETI+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 MAX17806ETI+T part is unused and in its original packaging.
Return procedure for MAX17806ETI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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