/
/
/
Battery Management 
/
Top ![]()
MAX17853
14-Channel High-Voltage Data-Acquisition System
Industry's Leading ASIL D Battery Monitor ASIC
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
| Functions | Status Monitor |
| Battery Type | 3-12 Cell Li-Ion + 2 Bus Bars 3-14 Cell Li-Ion Multi-Cell Li-Ion |
| Interface | SPI UART |
| Parameters Measured | Current through AUX/GPIO Temperature Voltage |
| End Equipment | Host Pack |
| Battery Protection Features | Over Voltage Over-Current Over-Temperature Over/Under Voltage |
| VSUPPLY (V) (min) | 9 |
| VSUPPLY (V) (max) | 65 |
| Package/Pins | LQFP/64 |
| Oper. Temp. (°C) | -40 to +125 |
| Budgetary Price (See Notes) | 0 |
View Less
Simplified Block Diagram
Technical Docs
| Data Sheet | 14-Channel High-Voltage Data-Acquisition System | Sep 24, 2020 | |
| Design Solution | Why Fast Time-to-Market Calls for Flexible EV Battery Management Systems | ||
| White Paper | Why Designing ICs from the Ground Up for Automotive Applications Matters |
Design Solution: Why Fast Time-to-Market Calls for Flexible EV Battery Management Systems Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
Parameters
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
| Functions | Status Monitor |
| Battery Type | 3-12 Cell Li-Ion + 2 Bus Bars 3-14 Cell Li-Ion Multi-Cell Li-Ion |
| Interface | SPI UART |
| Parameters Measured | Current through AUX/GPIO Temperature Voltage |
| End Equipment | Host Pack |
| Battery Protection Features | Over Voltage Over-Current Over-Temperature Over/Under Voltage |
| VSUPPLY (V) (min) | 9 |
| VSUPPLY (V) (max) | 65 |
| Package/Pins | LQFP/64 |
| Oper. Temp. (°C) | -40 to +125 |
| Budgetary Price (See Notes) | 0 |
Key Features
- AECQ-100 Grade 1 Temperature Range -40°C to 125°C
- 65V Operating Voltage
- Ultra-Low-Power Operation
- Standby Mode: 2mA
- Shutdown Mode: 2µA
- Redundant ADC and Comparator (COMP) Acquisitions
- Simultaneous Cell and Bus-Bar Voltage Acquisitions
- 14 Cell-Voltage Measurement Channels
- 1mV Accuracy (3.6V, 25°C)
- 2mV Accuracy (5°C to 40°C)
- 4.5mV Accuracy (-40°C to +125°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 Alert
- Overvoltage, Undertemperature Faults
- Undervoltage, Overtemperature Faults
- One Cell-Mismatch Alert
- Support ASIL D Requirements for Cell Voltage, Temperature, Communication
- Selectable UART, Dual UART, or SPI 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)
- Configurable Hardware-Alert Interfaces
- Factory-Trimmed Oscillator
- No External Crystals Required
- 32-Bit Unique Device ID
- 64-Pin (10mm x 10mm) LQFP Package
Applications/Uses
- Battery-Backup Systems (UPS)
- Battery-Powered Tools
- Electric Bikes
- Electric Vehicles (EVs)
- High-Voltage Battery Stacks
- Hybrid Electric Vehicles (HEVs)
- Super-Cap Systems
Description
The MAX17853 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 263µs, or perform all inputs solely with the ADC measurement engine in 156µs. 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 1mV (3.6V cell, 25°C).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.
For robust communications, the system uses a Maxim battery-management UART or SPI protocol, 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.
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 1mV (3.6V cell, 25°C).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.
For robust communications, the system uses a Maxim battery-management UART or SPI protocol, 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.
 |  |  |
Also see: EV Powertrain ›
Technical Docs
| Data Sheet | 14-Channel High-Voltage Data-Acquisition System | Sep 24, 2020 | |
| Design Solution | Why Fast Time-to-Market Calls for Flexible EV Battery Management Systems | ||
| White Paper | Why Designing ICs from the Ground Up for Automotive Applications Matters |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
Request a Quote