ADBMS6815M

PRODUCTION

12-Channel Multicell Battery Monitor

Data Sheet (Rev. Sp0) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Overview

Measures up to 12 battery cells in series
Maximum lifetime total measurement error: ±1.9 mV at 3.3 V per cell (–40℃ to +85℃)
Stackable architecture for high voltage battery packs
Built-in isoSPI interface
2 Mbps isolated serial communications
Uses a single twisted pair, up to 20 meters
Low EMI susceptibility and emissions
Bidirectional for broken wire protection
Capacitor or transformer coupled
Hot plug tolerant without external protection
Diagnostics for IC and application circuit failure modes

304 μs to measure all cells in a system
16-bit ADC with programmable noise filter
Passive cell balancing up to 300 mA per channel with programmable PWM
7 GPIOx or analog inputs
Temperature or other sensor inputs
Configurable as an I2C or SPI controller
Sleep state V+ supply current: 5.5 μA typical
Includes low power cell monitoring (LPCM) for cell and temperature monitoring in key-off state
48-lead LFCSP_SS package with exposed pad
- Also available in 48-lead LQFP package with exposed pad, see ADBMS6815
AEC-Q100 qualified for automotive applications

The ADBMS6815M is a multicell battery stack monitor that measures up to 12 series connected battery cells with a lifetime total measurement error (TME) of less than 1.9 mV. The cell measurement range of 0 V to 5 V makes the ADBMS6815M suitable for most battery chemistries. All 12 cells can be measured in 304 μs, and lower data acquisition rates can be selected for high noise reduction.

Multiple ADBMS6815M devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each ADBMS6815M has an isolated serial peripheral interface (isoSPI^™) interface for high speed, RF immune, long distance communications. Multiple devices are connected in a daisy chain with one host processor connection for all devices. This daisy chain can operate bidirectionally to ensure communication integrity even in the event of a fault along the communication path.

The ADBMS6815M can be powered directly from the battery stack or from an isolated supply. The ADBMS6815M includes passive balancing for each cell, with individual pulse-width modulation (PWM) duty cycle control for each cell. Other features include an on-board 5 V regulator, seven general-purpose input and output (GPIOx) lines, and a sleep state, where current consumption is reduced to 5.5 μA.

APPLICATIONS

Electric and hybrid electric vehicles
Backup battery systems
Grid energy storage
Large portable power banks

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

ADBMS6815M: 12-Channel Multicell Battery Monitor Data Sheet (Rev.Sp0) 09/22/2021

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
ADBMS6815MWCCSZ	48-Lead Plastic Side Wettable QFN (7mm × 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADBMS6815MWCCSZ-RL	48-Lead Plastic Side Wettable QFN (7mm × 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jan 19, 2024 - 23_0271 ADBMS6815M/ADBMS6817M Die Revision and Copper Wire Change
		PCN23_0271_Form Material_Report Delta Qualification Matrix Qualification Results Summary Qualification Results Summary
ADBMS6815MWCCSZ
ADBMS6815MWCCSZ-RL

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

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