ATA6870-PLQW

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: PLQW (Power Leadless Quad Flat No-Lead)

Essence: The ATA6870-PLQW is a highly integrated power management IC specifically designed for battery management systems in various applications.

Packaging/Quantity: The ATA6870-PLQW is available in a PLQW package. The quantity per package may vary depending on the supplier.

Specifications

The ATA6870-PLQW 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 thresholds
• Fault Diagnosis: Comprehensive fault diagnosis and reporting capabilities

Detailed Pin Configuration

The ATA6870-PLQW has a pin configuration as follows:

1. VDD: Power supply input
2. GND: Ground connection
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 indication
8. THERM: Temperature sense input
9. CB[0:15]: Cell balance control pins for active cell balancing

Functional Features

The ATA6870-PLQW offers the following functional features:

1. Battery Monitoring: Accurate monitoring of individual cell voltages and temperatures.
2. Cell Balancing: Active balancing of cell voltages to ensure uniform charge/discharge levels.
3. Fault Detection: Comprehensive fault detection and reporting for enhanced safety.
4. Communication Interface: SPI interface for easy integration with microcontrollers or host systems.
5. Low Power Consumption: Optimized power management for efficient operation.

Advantages and Disadvantages

Advantages: - High integration reduces component count and board space requirements. - Robust protection features enhance battery safety and reliability. - Advanced communication capabilities enable seamless integration with various systems. - Compact size allows for flexible placement in space-constrained applications.

Disadvantages: - Limited to Li-ion battery applications. - Requires external microcontroller or host system for full functionality.

Working Principles

The ATA6870-PLQW operates by continuously monitoring the voltage and temperature of each individual cell in a battery pack. It uses active cell balancing techniques to ensure that all cells are charged and discharged uniformly, maximizing the overall battery performance and lifespan. The IC also incorporates comprehensive protection features to prevent overvoltage, undervoltage, overcurrent, short circuit, and overtemperature conditions.

Detailed Application Field Plans

The ATA6870-PLQW is widely used in battery management systems for various 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

Some alternative models to the ATA6870-PLQW include: - BQ76940: Texas Instruments' battery management IC with similar features and specifications. - LTC6804: Linear Technology's multicell battery monitor and balancer. - MAX14920: Maxim Integrated's integrated battery management IC for Li-ion battery packs.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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