LTC6802IG-2#TRPBF

Product Overview

Category

The LTC6802IG-2#TRPBF belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• High accuracy: The LTC6802IG-2#TRPBF offers precise voltage measurement and balancing capabilities.
• Multi-cell support: It can monitor up to 12 series-connected battery cells.
• Balancing functionality: The IC enables active cell balancing, ensuring uniform charge levels across all cells.
• Fault detection: It provides comprehensive fault detection features, including overvoltage, undervoltage, and overtemperature protection.
• Communication interface: The LTC6802IG-2#TRPBF supports a serial communication interface for easy integration into BMS designs.

Package

This product is available in a 38-lead plastic TSSOP package.

Essence

The LTC6802IG-2#TRPBF is an essential component in battery management systems, enabling accurate monitoring, balancing, and protection of lithium-ion battery cells.

Packaging/Quantity

The LTC6802IG-2#TRPBF is typically packaged in reels containing 250 units per reel.

Specifications

• Voltage Measurement Range: 0V to 5V
• Cell Balancing Current: Up to 100mA
• Operating Temperature Range: -40°C to 85°C
• Supply Voltage Range: 2.7V to 5.5V
• Communication Interface: SPI (Serial Peripheral Interface)
• Dimensions: 9.7mm x 6.4mm x 1.1mm

Detailed Pin Configuration

The LTC6802IG-2#TRPBF features a total of 38 pins. Here is a detailed pin configuration:

1. VREF-
2. VREF+
3. VDD
4. GND
5. GPIO1
6. GPIO2
7. GPIO3
8. GPIO4
9. GPIO5
10. GPIO6
11. GPIO7
12. GPIO8
13. GPIO9
14. GPIO10
15. GPIO11
16. GPIO12
17. CS
18. SDO
19. SDI
20. SCK
21. MISO
22. MOSI
23. CB1
24. CB2
25. CB3
26. CB4
27. CB5
28. CB6
29. CB7
30. CB8
31. CB9
32. CB10
33. CB11
34. CB12
35. CB13
36. CB14
37. CB15
38. CB16

Functional Features

The LTC6802IG-2#TRPBF offers the following functional features:

1. Voltage Measurement: Accurate measurement of individual battery cell voltages.
2. Cell Balancing: Active balancing of cells to ensure uniform charge levels.
3. Fault Detection: Comprehensive fault detection for overvoltage, undervoltage, and overtemperature conditions.
4. Communication Interface: Serial communication interface for easy integration with microcontrollers or BMS controllers.
5. Daisy-Chaining: Multiple LTC6802IG-2#TRPBF ICs can be daisy-chained for monitoring larger battery packs.

Advantages and Disadvantages

Advantages

• High accuracy voltage measurement ensures precise monitoring of battery cells.
• Active cell balancing improves overall battery pack performance and longevity.
• Comprehensive fault detection protects the battery cells from potential damage.
• Serial communication interface simplifies integration into battery management systems.
• Daisy-chaining capability allows scalability for larger battery packs.

Disadvantages

• Limited to monitoring and balancing lithium-ion battery cells.
• Requires additional external components for complete battery management system implementation.
• Relatively high cost compared to simpler battery monitoring ICs.

Working Principles

The LTC6802IG-2#TRPBF operates by measuring the voltage of each individual battery cell in a series-connected configuration. It uses an internal multiplexer to sequentially measure the voltage across each cell. The measured voltages are then compared to predefined thresholds to detect faults such as overvoltage or undervoltage conditions. If any imbalances are detected, the IC activates the cell balancing circuitry to equalize the charge levels among the cells.

Detailed Application Field Plans

The LTC6802IG-2#TRPBF is widely used in various applications involving lithium-ion battery packs, including:

1. Electric Vehicles (EVs): Ensuring the safety and performance of EV battery packs.
2. Renewable Energy Systems: Monitoring and managing battery banks in solar or wind power installations.
3. Portable Electronics: Optimizing battery life and preventing damage in smartphones, tablets, and laptops.
4. Uninterrupt