MAX17843 datasheet(1/131 Pages) MAXIM

部件名	MAX17843

功能描述	12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface

PDF	131 Pages

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制造商	MAXIM [Maxim Integrated Products]

网页	https://www.maximintegrated.com/en.html

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General Description

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.

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.

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.

Applications

● 48V Vehicle Battery Modules or Systems

● High-Voltage Electric Vehicle (EVs)

● Hybrid Electric Vehicles (HEVs)

● Battery Packs

● Electric Bikes

● High-Power Battery-Backup Systems

● Super-Cap Backup Systems

● Power Tools

Benefits and Features

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

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

• 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

● 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

● Built-In Diagnostics to Support ASIL D and FMEA

Requirements

● Ultra-Low-Power Dissipation

• 2.0mA (typ) Standby-Mode Supply Current

• 3μA Shutdown Mode Leakage Current

● -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

Click

here for production status of specific part numbers.

MAX17843

12-Channel, High-Voltage Smart Sensor

Data-Acquisition Interface

EVALUATION KIT AVAILABLE

类似零件编号 - MAX17843

制造商	部件名	数据表	功能描述
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	MAX17841BGUE	1Mb / 33P	Automotive SPI Communication Interface (ASCI) Rev 2; 1/15
	MAX17841BGUEV	1Mb / 33P	Automotive SPI Communication Interface (ASCI) Rev 2; 1/15

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