ATA6870N-PLPW

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC for Battery Management Systems (BMS)

Characteristics: - High integration and compact size - Low power consumption - Wide operating voltage range - Robust protection features - Advanced communication capabilities

Package: PLPW (Power Leadframe Package with Heat Slug)

Essence: The ATA6870N-PLPW is a highly integrated power management IC specifically designed for battery management systems in various applications.

Packaging/Quantity: The ATA6870N-PLPW is available in a PLPW package and is typically sold in reels of 2500 units.

Specifications

The ATA6870N-PLPW offers the following specifications:

• Operating Voltage Range: 2.7V to 5.5V
• Number of Cells Supported: Up to 16 series-connected Li-ion cells
• Communication Interface: SPI (Serial Peripheral Interface)
• Temperature Range: -40°C to +85°C
• Protection Features: Overvoltage, undervoltage, overcurrent, short circuit, and overtemperature protection
• Cell Balancing: Active cell balancing with programmable balancing current
• Diagnostic Features: Voltage and temperature monitoring, fault detection, and reporting

Detailed Pin Configuration

The ATA6870N-PLPW has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground connection
3. CS: Chip select for SPI communication
4. SCLK: Serial clock for SPI communication
5. MOSI: Master output, slave input for SPI communication
6. MISO: Master input, slave output for SPI communication
7. ALERT: Interrupt output for fault indication
8. BAL: Cell balancing control input
9. THERM: Temperature sensor input
10. VREF: Reference voltage output
11. VBAT: Battery voltage input
12. VSS: Negative battery terminal connection

Functional Features

The ATA6870N-PLPW offers the following functional features:

1. Battery Monitoring: Accurate measurement of individual cell voltages and temperature for comprehensive battery monitoring.
2. Cell Balancing: Active cell balancing to equalize the charge levels of individual cells, maximizing battery performance and lifespan.
3. Fault Detection and Reporting: Real-time fault detection and reporting for overvoltage, undervoltage, overcurrent, short circuit, and overtemperature conditions.
4. Communication Interface: SPI communication interface allows seamless integration with microcontrollers or other control systems.
5. Low Power Consumption: Optimized power management circuitry ensures minimal power consumption during operation, extending battery life.

Advantages and Disadvantages

Advantages: - High integration reduces external component count and PCB space requirements. - Robust protection features ensure safe and reliable battery operation. - Advanced communication capabilities enable seamless integration with various control systems. - Active cell balancing maximizes battery performance and extends lifespan.

Disadvantages: - Limited to applications requiring up to 16 series-connected Li-ion cells. - Requires familiarity with SPI communication protocol for proper integration.

Working Principles

The ATA6870N-PLPW operates by continuously monitoring the voltage and temperature of each individual cell in a battery pack. It utilizes an internal control algorithm to balance the charge levels of the cells, ensuring optimal performance and preventing overcharging or undercharging. The IC communicates with an external microcontroller or control system through the SPI interface, providing real-time data on battery status and fault conditions.

Detailed Application Field Plans

The ATA6870N-PLPW is widely used in various battery-powered applications, including: - Electric vehicles (EVs) and hybrid electric vehicles (HEVs) - Energy storage systems (ESS) - Uninterruptible power supplies (UPS) - Portable electronic devices - Industrial equipment

Detailed and Complete Alternative Models

1. ATA6870N-PLPW: The model described in this entry, suitable for applications requiring up to 16 series-connected Li-ion cells.
2. ATA6870N-PLPW-XX: Similar to the ATA6870N-PLPW, but with extended support for up to XX series-connected Li-ion cells.
3. ATA6870N-PLPW-HV: High-voltage variant designed for applications with higher operating voltage requirements.

These alternative models offer similar functionality and features, catering to different battery management system requirements.

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