MAX17843ACB/V+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Automotive Battery Management System (BMS)
• Characteristics:
  • High accuracy and precision
  • Low power consumption
  • Robust protection features
• Package: Chip Scale Package (CSP)
• Essence: Advanced battery management solution
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 3.0V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Number of Cells Supported: Up to 14 series-connected cells
• Cell Voltage Measurement Accuracy: ±2mV
• Current Measurement Accuracy: ±1%
• Communication Interface: SPI (Serial Peripheral Interface)

Detailed Pin Configuration

The MAX17843ACB/V+T has the following pin configuration:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. CS: Chip select for SPI communication
4. SCLK: Serial clock for SPI communication
5. SDI: Serial data input for SPI communication
6. SDO: Serial data output for SPI communication
7. ALERT: Interrupt output for fault conditions
8. THERM: Thermistor input for temperature monitoring
9. BAT: Battery voltage sense input
10. ISENSE: Current sense input

Functional Features

• Accurate cell voltage and current measurement
• Overvoltage and undervoltage protection
• Overcurrent and short-circuit protection
• Temperature monitoring and thermal shutdown
• Fault detection and reporting through interrupt output
• Configurable SPI interface for communication with external microcontroller

Advantages

• High accuracy and precision ensure reliable battery management
• Low power consumption extends battery life
• Robust protection features safeguard against potential faults
• Compact CSP package allows for space-efficient integration
• Flexible SPI interface enables seamless communication with external devices

Disadvantages

• Limited support for a maximum of 14 series-connected cells
• Requires an external microcontroller for full functionality

Working Principles

The MAX17843ACB/V+T is designed to monitor and manage the performance of automotive battery packs. It accurately measures the voltage and current of each cell in the pack, ensuring optimal charging and discharging processes. The IC incorporates various protection features to prevent overvoltage, undervoltage, overcurrent, and short-circuit conditions. Temperature monitoring helps prevent thermal runaway, while fault detection and reporting enhance system safety.

Detailed Application Field Plans

The MAX17843ACB/V+T is primarily used in automotive applications, specifically in Battery Management Systems (BMS). It finds extensive use in electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (PHEVs). The IC's high accuracy and robust protection features make it suitable for demanding automotive environments.

Detailed and Complete Alternative Models

1. MAX17843GCB/V+T: Similar to MAX17843ACB/V+T, but supports up to 12 series-connected cells.
2. MAX17844ACB/V+T: Offers additional features such as cell balancing and state-of-charge estimation.
3. LTC6804-2: Competing IC with similar functionality, supporting up to 12 series-connected cells.

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