Datasheet > MAX17843

MAX17843

更新时间： 2024-09-09 02:52:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
131页	2069K
描述
12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface

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MAX17843

12-Channel, High-Voltage Smart Sensor

Data-Acquisition Interface

General Description

Beneﬁts and Features

● 12-Cell Battery-Voltage Measurement for Lithium-Ion,

The MAX17843 is a programmable, highly integrated,

high-voltage, 12-channel battery-monitoring smart data-

acquisition interface with extensive features for safety. It

is optimized for use with batteries used in automotive sys-

tems, hybrid electric battery packs, electric cars, and any

system that stacks long series strings of secondary metal

batteries. This highly integrated battery sensor incorpo-

rates a high-speed differential UART bus for robust daisy-

chained serial communication.

NiMH, or Super-Cap Cells

● Two Auxiliary Analog Inputs for NTC Thermistor or

Absolute Voltage Measurement

● Die Temperature Measurement and alert

● High-Accuracy Differential Measurement I/Os

• ±2mV Accuracy at +25°C and 3.6V

● Integrated 12-Channel Data-Acquisition System

• Diﬀerential High-Voltage Mux to ADC

• 14-Bit ADC Resolution with Oversampling

• 12 Cell Voltages Measured within 142μs

• Module Voltage Measurement

The analog front-end combines a 12-channel voltage-

measurement data-acquisition system with a high-voltage

switch-bank input. All measurements are done differen-

tially across each cell. The full-scale measurement range

is from 0 to 5.0V with a usable range of 0.2V to 4.8V. A

high-speed successive approximation (SAR) A/D con-

verter is used to digitize the cell voltages at 14-bit resolu-

tion with oversampling. All 12 cells can be measured in

under 142μs. The MAX17843 uses a 2-scan approach

for collecting cell measurements and correcting them for

errors. This 2-phase approach yields excellent accuracy

over temperature and in the face of extreme noise in the

system.

• Redundant ADC

● Battery Fault Detection

• Overvoltage and Undervoltage Digital Threshold

Detection

• Enhanced Diagnostic Features for Fault Detection

to Support ASIL and FMEA

● 12 Internal Cell-Balancing Switches

• Support Up to 150mA per Switch

• Emergency Cell-Discharge Mode

The MAX17843 has two auxiliary analog inputs that can

be used to measure external thermistor components. A

negative temperature coefficient (NTC) thermistor can be

configured with the AUXIN analog inputs to accurately

monitor module or battery-cell temperature. A thermal-

overload detector disables the MAX17843’s linear regula-

tor to protect the IC, and a die-temperature measurement

is also available.

● Integrated 9V to 65V Input Linear Regulator

● Integrated Temperature-Compensated, Voltage

Reference

● Robust Differential Daisy-Chain UART Interface

• Up to 32 Connected ICs in a Single Daisy-Chain

• Compatible with Direct MCU Connection

• Standard UART bytes at 2Mb/s (max) Rate

● Four General-Purpose Digital I/O Lines

Applications

● Built-In Diagnostics to Support ASIL D and FMEA

● 48V Vehicle Battery Modules or Systems

● High-Voltage Electric Vehicle (EVs)

● Hybrid Electric Vehicles (HEVs)

● Battery Packs

Requirements

● Ultra-Low-Power Dissipation

• 2.0mA (typ) Standby-Mode Supply Current

• 3μA Shutdown Mode Leakage Current

● Electric Bikes

● High-Power Battery-Backup Systems

● Super-Cap Backup Systems

● Power Tools

● -40°C to +125°C Operating Temperature Range

(AEC-Q100 Grade 1)

● 64-Pin, Lead-Free/RoHS-Compliant, 10mm x 10mm

LQFP Package

Ordering Information appears at end of data sheet.

19-100084; Rev 2; 4/18

12 3 4 5 6 7...131

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与MAX17843相关器件

型号	品牌	获取价格	描述	数据表
MAX17843ACB	MAXIM	获取价格	12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
MAX17843ACBV	MAXIM	获取价格	12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
MAX17851	ADI	获取价格	SPI to UART Safety Monitoring Bridge
MAX17852	ADI	获取价格	14-Channel High-Voltage, ASIL D, Data-Acquisition System with Integrated Current-Sense Amp
MAX17853	MAXIM	获取价格	14-Channel High-Voltage Data-Acquisition System
MAX17853	ADI	获取价格	14通道、高压数据采集系统
MAX17853ACB	MAXIM	获取价格	14-Channel High-Voltage Data-Acquisition System
MAX17853ACBV	MAXIM	获取价格	14-Channel High-Voltage Data-Acquisition System
MAX17854	ADI	获取价格	14通道高压数据采集系统
MAX17880	MAXIM	获取价格	Ensures Safe Operation of Li-Ion Battery Packs While Reducing System Cost

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