MAX17854

RECOMMENDED FOR NEW DESIGNS

14-Channel, High-Voltage Data-Acquisition System

Fastest Acquisition, Highest ASIL Level, Best Accuracy in Full Temperature Range and Highest Balancing Current

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $6.32

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Overview

65V Operating Voltage
Ultra-Low Power Operation

Shutdown Mode: 2µA

Redundant ADC and Comparator (COMP) Acquisitions
Simultaneous Cell and Bus-Bar Voltage Acquisitions
14 Cell-Voltage Measurement Channels

2.2mV Accuracy (-40°C to +125°C)
1.8mV Accuracy (+5°C to +65°C)

14 Cell-Balancing Switches

>300mA Software-Programmable Balancing Current
Optimized Driving and Parking Balancing Modes
Automated Balancing with Individual Cell Timers
Automated Balancing by Cell Voltage
Emergency Discharge Mode

Six Configurable Auxiliary Inputs for Temperature, Voltage, or GPIO
Integrated Die Temperature Measurement
Automatic Thermal Protection
Individually Configurable Safety Alerts

Overvoltage, Undertemperature Faults
Undervoltage, Overtemperature Faults
1-Cell Mismatch Alert

Support ASIL D Requirements for Cell Voltage, Temperature, Communication
UART, Dual UART Interface
Battery-Management UART Protocol
- Daisy-Chain up to 32 Devices
- Capacitive Communication-Port Isolation
- Up to 2Mbps Baud Rate (Auto-Detect)
- 1.5μs Propagation Delay per Device
- Packet-Error Checking (PEC)
I²C Master
Configurable Hardware-Alert Interfaces
32-Bit Unique Device ID
AEC-Q100 Grade 1

Temperature Range -40°C to +125°C

The MAX17854 is a flexible data-acquisition system for the management of high-voltage and low-voltage battery modules. The system can measure 14 cell voltages and a combination of six temperatures or system voltage measurements with fully redundant measurement engines in 162µs, or perform all inputs solely with the ADC measurement engine in 99µs. There are 14 internal balancing switches rated for >300mA for cell-balancing current, each supporting extensive built-in diagnostics. Up to 32 devices can be daisy-chained to manage 448 cells and monitor 192 temperatures.

Cell and bus-bar voltages ranging from -2.5V to +5V are measured differentially over a 65V common-mode range, with a typical accuracy of 100µV. If oversampling is enabled, up to 128 measurements per channel can be averaged internally with 14-bit resolution and combined with digital post-processing IIR filtering for increased noise immunity. The system can shut itself down in the event of a thermal overload by measuring its own die temperature.

The system uses Analog Devices' battery-management UART protocol for robust communications and supports an I²C master interface for external device control, and is optimized to support a reduced feature set of internal diagnostics and rapid-alert communication through both embedded communication and hardware-alert interfaces to support ASIL D and FMEA requirements.

Applications

Battery-Backup Systems (UPS)
Battery-Powered Tools
Electric Bikes
Electric Vehicles (EVs)
High-Voltage Battery Stacks
Hybrid Electric Vehicles (HEVs)
Super-Cap Systems

Part Models: 2
1ku List Price: Starting From $6.32

Documentation

Data Sheet 1

MAX17854: 14-Channel, High-Voltage Data-Acquisition System Data Sheet (Rev.0) 12/20/2021

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX17854ACB/V+	64-LQFP-10X10X1.4	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX17854ACB/V+T	64-LQFP-10X10X1.4	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 3, 2024 - 2267B ASSEMBLY
		pcn_2267b
MAX17854ACB/V+	PRODUCTION
MAX17854ACB/V+T
Jul 22, 2022 - 2267A ASSEMBLY
		pcn_2267a
MAX17854ACB/V+	PRODUCTION
MAX17854ACB/V+T
Sep 1, 2021 - 2181 ASSEMBLY
		pcn_2181
MAX17854ACB/V+	PRODUCTION	pcn_2181

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Monitors & Fuel Gauges 4
MAX17823B	PRODUCTION	12-Channel High-Voltage Data Acquisition System
MAX17843	PRODUCTION	12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
MAX17853	PRODUCTION	14-Channel High-Voltage Data-Acquisition System
MAX17852	PRODUCTION	14-Channel High-Voltage, ASIL D, Data-Acquisition System with Integrated Current-Sense Amplifier

Tools & Simulations

Software Development 1

MAX17854 Evaluation Kit Software, 1.0.2

Evaluation Kits

Evaluation Kit for the MAX17854

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Features and Benefits

Provides a Convenient Platform for Evaluating the Features and Functions of the MAX17854
Versatile GUI Interface for Features Evaluation
Plug-and-Play Architecture for Rapid System Prototyping
Force and Sense Pin Headers for Precision Measurement Assessment
Built-In Resistor Stack for Battery Emulation
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX17854 evaluation kit (EV kit) is used to demonstrate the features and capabilities of the MAX17854 14-channel high-voltage smart sensor data acquisition interface IC. The EV kit is coupled with a MAX17851 EV kit to establish communication with a host PC. With communication established, control of the MAX17854 EV kit is executed through the EV kit GUI on the host PC. The GUI is Windows XP^®-, Windows Vista^®-, Windows^® 7-, and Windows 10-compatible and is available through your local Maxim Integrated sales office.

Note: References to the MAX17851 in this data sheet pertain equally to the MAX17841B as well.

The MAX17854 EV kit design provides a convenient platform for evaluating the features and functions of the IC, in addition to the IC’s electrical parameters. The EV kit with vertical communication connectors (TXLP_CONN, RXLP_CON, TXUP_CONN, RXUP_CONN) and snap and lock battery pack connector enables the user to quickly build and evaluate a system with up to 32 daisychain devices.

Applications

Battery-Backup Systems (UPS)
Battery-Powered Tools
Electric Bikes
Electric Vehicles (EVs)
High-Voltage Battery Stacks
Hybrid Electric Vehicles (HEVs)
Super-Cap Systems

Resources

MAX17854EVKIT ODB Files - Design Files
1/1/0001

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