LTC6810IG-1#3ZZPBF

Product Overview

Category

The LTC6810IG-1#3ZZPBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in battery management systems (BMS) for monitoring and balancing lithium-ion battery stacks.

Characteristics

• The LTC6810IG-1#3ZZPBF is a high-performance, multi-cell battery stack monitor.
• It provides accurate voltage and temperature measurements for each individual cell in a battery stack.
• The device offers built-in balancing functionality to equalize the charge across cells.
• It supports daisy-chaining multiple devices for monitoring large battery packs.
• The LTC6810IG-1#3ZZPBF operates over a wide temperature range and is designed for automotive and industrial applications.

Package

The LTC6810IG-1#3ZZPBF is available in a 144-pin plastic quad flat pack (PQFP) package.

Essence

The essence of the LTC6810IG-1#3ZZPBF lies in its ability to accurately monitor and balance the voltage and temperature of individual cells in a lithium-ion battery stack, ensuring optimal performance and safety.

Packaging/Quantity

This product is typically sold in reels or trays, with a quantity of 250 units per reel/tray.

Specifications

• Input Voltage Range: -0.3V to +5V
• Cell Voltage Measurement Accuracy: ±0.25mV
• Temperature Measurement Accuracy: ±1°C
• Balancing Current: Up to 100mA per cell
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: 2.7V to 5.5V
• Communication Interface: SPI (Serial Peripheral Interface)
• Dimensions: 20mm x 20mm x 1.05mm

Pin Configuration

The LTC6810IG-1#3ZZPBF features a 144-pin package with the following pin configuration:

Functional Features

• Accurate measurement of cell voltages and temperatures
• Built-in balancing functionality for equalizing cell charge
• Daisy-chain capability for monitoring large battery packs
• Fault detection and reporting for overvoltage, undervoltage, and overtemperature conditions
• Low-power sleep mode for energy efficiency
• Configurable alert thresholds and timing parameters

Advantages and Disadvantages

Advantages

• High accuracy in cell voltage and temperature measurements
• Integrated balancing functionality reduces the need for external components
• Wide operating temperature range suitable for automotive and industrial applications
• Daisy-chaining capability simplifies the monitoring of large battery packs

Disadvantages

• Relatively high cost compared to simpler battery monitoring solutions
• Requires knowledge of SPI communication protocol for integration into systems
• Limited availability of alternative models from other manufacturers

Working Principles

The LTC6810IG-1#3ZZPBF works by measuring the voltage and temperature of each individual cell in a lithium-ion battery stack. It utilizes an internal multiplexer to sequentially sample the cell voltages and an on-chip temperature sensor for temperature measurements. The device communicates with a microcontroller or host system through the SPI interface, providing real-time data on cell voltages and temperatures.

The built-in balancing functionality allows the LTC6810IG-1#3ZZPBF to actively equalize the charge across cells by diverting current from higher voltage cells to lower voltage cells. This ensures that all cells operate within their optimal voltage range, maximizing battery performance and lifespan.

Detailed Application Field Plans

The LTC6810IG-1#3ZZPBF is widely used in various applications that require precise monitoring and management of lithium-ion battery stacks. Some common application fields include:

1. Electric Vehicles (EVs): The LTC6810IG-1#3ZZPBF is used in EV battery packs to ensure the safety and efficiency of the power storage system.

2. Renewable Energy Systems: Battery banks in solar or wind energy systems utilize the LTC6810IG-1#3ZZPBF for accurate monitoring and balancing of individual cells.

3. Uninterruptible Power Supplies (UPS): The device helps maintain the health and performance of UPS battery systems, ensuring reliable backup power during outages.

4. Portable Electronics: High-end portable devices, such as laptops and drones, benefit from the LTC6810IG-1#3ZZPBF's ability to monitor and balance battery cells, enhancing overall performance and longevity.

Detailed and Complete Alternative Models

While the LTC6810IG-1#3ZZPBF is a highly capable battery stack monitor, there are alternative models available from other manufacturers. Some notable alternatives include:

1. Texas Instruments BQ76940: This IC offers similar functionality with built-in balancing and