ATA6870-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 - Reliable performance

Package: PLPW (Power Leadframe Package)

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

Packaging/Quantity: The ATA6870-PLPW is available in a PLPW package and is typically sold in reels of 2500 units.

Specifications

The ATA6870-PLPW offers the following specifications:

• Operating Voltage Range: 2.7V to 5.5V
• Number of Cells Supported: Up to 16 series-connected cells
• Cell Voltage Measurement Accuracy: ±10mV
• Current Measurement Accuracy: ±1%
• Temperature Measurement Accuracy: ±2°C
• Communication Interface: SPI (Serial Peripheral Interface)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ATA6870-PLPW has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. CS: Chip select input
4. SCLK: Serial clock input
5. SDI: Serial data input
6. SDO: Serial data output
7. ALERT: Interrupt output
8. THERM: Temperature sensor input
9. VREF: Reference voltage output
10. VBAT: Battery voltage input
11. VSS: Negative battery terminal
12. VCC: Positive battery terminal

Functional Features

The ATA6870-PLPW offers the following functional features:

1. Cell Voltage Monitoring: Accurate measurement of individual cell voltages in a battery pack.
2. Current Measurement: Precise monitoring of battery pack current for accurate state-of-charge estimation.
3. Temperature Monitoring: Reliable temperature measurement to ensure safe operation and prevent overheating.
4. Overvoltage/Undervoltage Protection: Detects and protects against excessive or insufficient cell voltages.
5. Overcurrent Protection: Safeguards the battery pack from excessive discharge or charge currents.
6. Communication Interface: Allows communication with external microcontrollers or host systems.

Advantages and Disadvantages

Advantages: - High integration reduces component count and PCB space requirements. - Low power consumption prolongs battery life. - Wide operating voltage range enables compatibility with various battery chemistries. - Robust protection features enhance safety and reliability. - Reliable performance ensures accurate battery management.

Disadvantages: - Limited to applications requiring up to 16 series-connected cells. - Requires an external microcontroller or host system for full functionality.

Working Principles

The ATA6870-PLPW operates based on the principles of voltage, current, and temperature measurement. It utilizes an internal ADC (Analog-to-Digital Converter) to convert analog signals from the battery pack into digital data. This data is then processed and used for various battery management functions such as cell balancing, state-of-charge estimation, and protection.

Detailed Application Field Plans

The ATA6870-PLPW is widely used in battery management systems for various applications, including but not limited to:

1. Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs)
2. Energy Storage Systems (ESS)
3. Uninterruptible Power Supplies (UPS)
4. Portable Electronic Devices
5. Industrial Equipment

Detailed and Complete Alternative Models

1. ATA6870-PLPW+: Enhanced version with extended temperature range (-40°C to +105°C).
2. ATA6870-PLPW-LT: Low-power variant with reduced power consumption.
3. ATA6870-PLPW-HV: High-voltage version supporting up to 24 series-connected cells.

These alternative models offer similar functionality but cater to specific application requirements or operating conditions.

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