LTC6803IG-4#PBF

Product Overview

Use

This product is primarily used in battery management systems (BMS) to monitor and balance the voltage levels of individual battery cells within a battery pack.

Characteristics

Battery monitoring: The LTC6803IG-4#PBF provides accurate measurement of each battery cell's voltage, allowing for precise monitoring of the overall battery health.
Balancing capability: It also offers the ability to balance the charge across individual battery cells, ensuring optimal performance and extending battery life.
High accuracy: The LTC6803IG-4#PBF features high-resolution analog-to-digital converters (ADCs) that provide accurate voltage measurements with low error margins.
Robust design: This IC is built to withstand harsh operating conditions, making it suitable for use in various industrial and automotive applications.
Low power consumption: The LTC6803IG-4#PBF is designed to minimize power consumption, enabling efficient battery management without draining excessive power from the battery pack.

Package and Quantity

The LTC6803IG-4#PBF is available in a 38-pin plastic quad flat no-leads (QFN) package. It is typically sold in reels or tubes, with a standard quantity of 250 units per reel/tube.

Specifications

Supply Voltage Range: 2.7V to 5.5V
Number of Battery Cells: Up to 12 cells
Voltage Measurement Resolution: 16 bits
Communication Interface: SPI (Serial Peripheral Interface)
Operating Temperature Range: -40°C to +85°C
Package Dimensions: 6mm x 6mm x 0.75mm

Pin Configuration

The LTC6803IG-4#PBF features a 38-pin QFN package with the following pin configuration:

VREF-
VREF+
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
GPIO11
GPIO12
GPIO13
GPIO14
GPIO15
GPIO16
GPIO17
GPIO18
GPIO19
GPIO20
GPIO21
GPIO22
GPIO23
GPIO24
GPIO25
GPIO26
GPIO27
GPIO28
GPIO29
GPIO30
GPIO31
SDO
SDI
SCK
CS
GND

Functional Features

Battery voltage measurement: The LTC6803IG-4#PBF can measure the voltage of each battery cell accurately and simultaneously.
Balancing control: It provides balancing control signals to ensure that the charge across individual battery cells is distributed evenly.
Fault detection: This IC can detect various faults such as overvoltage, undervoltage, and open-wire conditions, ensuring the safety and reliability of the battery pack.
Communication interface: The SPI interface allows for easy integration with microcontrollers or other digital systems.

Advantages and Disadvantages

Advantages

High accuracy voltage measurement
Balancing capability for optimal battery performance
Robust design suitable for harsh environments
Low power consumption for efficient battery management

Disadvantages

Limited to a maximum of 12 battery cells
Requires external microcontroller or digital system for full functionality

Working Principles

The LTC6803IG-4#PBF works by continuously monitoring the voltage of each battery cell in a battery pack. It uses high-resolution ADCs to convert the analog voltage readings into digital values. These values are then processed to determine the state of each battery cell, including any imbalances or faults.

If an imbalance is detected, the LTC6803IG-4#PBF generates balancing control signals to redistribute the charge among the cells, ensuring that they are charged and discharged uniformly. This balancing process helps to extend the overall battery life and maintain optimal performance.

The IC communicates with an external microcontroller or digital system through the SPI interface, providing real-time data on battery voltages and status. This allows for comprehensive battery management and enables timely actions to be taken in case of any abnormalities.

Detailed Application Field Plans

The LTC6803IG-4#PBF is widely used in various applications where accurate battery monitoring and balancing are crucial. Some of the common application fields include:

Electric vehicles (EVs) and hybrid electric vehicles (HEVs): The LTC

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LTC6803IG-4#PBF v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LTC6803IG-4#PBF in technical solutions:

Q: What is LTC6803IG-4#PBF? A: LTC6803IG-4#PBF is a high-performance battery stack monitor IC designed for multi-cell battery monitoring applications.
Q: What is the maximum number of cells that can be monitored using LTC6803IG-4#PBF? A: LTC6803IG-4#PBF can monitor up to 12 series-connected battery cells.
Q: How does LTC6803IG-4#PBF measure cell voltages? A: LTC6803IG-4#PBF uses an integrated 16-bit delta-sigma ADC to measure individual cell voltages accurately.
Q: Can LTC6803IG-4#PBF measure temperature as well? A: Yes, LTC6803IG-4#PBF has built-in temperature measurement capability for each cell.
Q: What communication interface does LTC6803IG-4#PBF support? A: LTC6803IG-4#PBF supports a daisy-chainable SPI interface for communication with a microcontroller or host system.
Q: Is LTC6803IG-4#PBF suitable for automotive applications? A: Yes, LTC6803IG-4#PBF is designed to meet the stringent requirements of automotive applications.
Q: Can LTC6803IG-4#PBF detect overvoltage and undervoltage conditions? A: Yes, LTC6803IG-4#PBF has built-in overvoltage and undervoltage detection circuits for each cell.
Q: Does LTC6803IG-4#PBF have any fault detection features? A: Yes, LTC6803IG-4#PBF can detect open-wire faults and short-circuit faults in the battery stack.
Q: Can multiple LTC6803IG-4#PBF ICs be used together for larger battery stacks? A: Yes, multiple LTC6803IG-4#PBF ICs can be daisy-chained to monitor larger battery stacks with more than 12 cells.
Q: What is the typical power consumption of LTC6803IG-4#PBF? A: The typical power consumption of LTC6803IG-4#PBF is around 1.5mW during normal operation.

Please note that these answers are general and may vary depending on the specific application and configuration. It's always recommended to refer to the datasheet and application notes for detailed information.