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LT3651IUHE-4.2
Product Overview
Category
LT3651IUHE-4.2 belongs to the category of integrated circuits (ICs) used in power management applications.
Use
The LT3651IUHE-4.2 IC is primarily used for battery charging and power management in various electronic devices.
Characteristics
- The LT3651IUHE-4.2 is a high-efficiency, multi-chemistry battery charger.
- It supports charging of lithium-ion, lithium-polymer, and sealed lead-acid batteries.
- The IC operates from a wide input voltage range, making it suitable for various power sources.
- It incorporates a comprehensive set of safety features to protect the battery and the charging circuitry.
- The LT3651IUHE-4.2 offers programmable charge current and termination algorithms for flexible charging profiles.
- It provides accurate monitoring and reporting of battery status through an integrated fuel gauge.
Package
LT3651IUHE-4.2 is available in a compact and thermally enhanced 28-pin QFN package.
Essence
The essence of LT3651IUHE-4.2 lies in its ability to efficiently charge different types of batteries while ensuring safety and flexibility.
Packaging/Quantity
The IC is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.
Specifications
- Input Voltage Range: 4V to 32V
- Charge Current Range: Up to 4.2A
- Programmable Charge Termination Algorithms
- Integrated Battery Fuel Gauge
- Operating Temperature Range: -40°C to 85°C
Detailed Pin Configuration
The LT3651IUHE-4.2 IC has the following pin configuration:
- VIN: Input Voltage
- GND: Ground
- VCC: Internal Regulator Output
- ISET: Charge Current Programming Pin
- TS: Thermal Shutdown
- STAT: Status Output
- FLT: Fault Indicator
- BAT: Battery Connection
- VFB: Feedback Voltage Input
- PROG: Programming Pin
- TIMER: Timer Programming Pin
- ILIM: Input Current Limit Programming Pin
- SDA: I2C Serial Data Input/Output
- SCL: I2C Serial Clock Input
- INTVCC: Internal Regulator Input
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
- NC: No Connect
Functional Features
- Multi-Chemistry Charging: The LT3651IUHE-4.2 supports charging of lithium-ion, lithium-polymer, and sealed lead-acid batteries.
- Wide Input Voltage Range: The IC can operate from a wide input voltage range, making it suitable for various power sources.
- Programmable Charge Current and Termination Algorithms: It offers flexibility in setting the charge current and termination algorithms to meet specific battery requirements.
- Integrated Battery Fuel Gauge: Accurate monitoring and reporting of battery status are provided through an integrated fuel gauge.
- Comprehensive Safety Features: The IC incorporates various safety features to protect the battery and the charging circuitry.
- Thermal Shutdown: The thermal shutdown feature prevents damage due to excessive heat.
Advantages and Disadvantages
Advantages
- High efficiency charging for multiple battery chemistries.
- Wide input voltage range allows compatibility with various power sources.
- Flexibility in charge current and termination algorithms.
- Integrated fuel gauge for accurate battery monitoring.
- Comprehensive safety features ensure protection.
Disadvantages
- Limited to charging specific battery chemistries (lithium-ion, lithium-polymer, sealed lead-acid).
- Requires programming for optimal charging profiles.
Working Principles
The LT3651IUHE-4.2 operates by converting the input voltage to a regulated charging voltage suitable for the connected battery. It employs a switching regulator topology to achieve high efficiency. The charge current and termination algorithms can be programmed to match the requirements of different battery chemistries. Safety features such as thermal shutdown, overvoltage protection, and reverse battery protection are integrated to safeguard the battery and the charging circuitry.
Detailed Application Field Plans
The LT3651IUHE-4.2 IC finds applications in various fields, including: - Portable electronic devices - Battery-powered tools and equipment - Electric vehicles and hybrid electric vehicles - Solar-powered systems - Industrial automation
Detailed and Complete Alternative Models
Some alternative models to LT3651IU
Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LT3651IUHE-4.2 v technických řešeních
Sure! Here are 10 common questions and answers related to the application of LT3651IUHE-4.2 in technical solutions:
Q1: What is the input voltage range for LT3651IUHE-4.2? A1: The input voltage range for LT3651IUHE-4.2 is typically between 4.95V and 32V.
Q2: What is the output voltage of LT3651IUHE-4.2? A2: The output voltage of LT3651IUHE-4.2 is fixed at 4.2V.
Q3: Can LT3651IUHE-4.2 charge multiple batteries simultaneously? A3: No, LT3651IUHE-4.2 is designed to charge a single lithium-ion or lithium-polymer battery at a time.
Q4: What is the maximum charging current supported by LT3651IUHE-4.2? A4: LT3651IUHE-4.2 supports a maximum charging current of 2A.
Q5: Does LT3651IUHE-4.2 have built-in thermal protection? A5: Yes, LT3651IUHE-4.2 has built-in thermal protection to prevent overheating during operation.
Q6: Can LT3651IUHE-4.2 be used for wireless charging applications? A6: No, LT3651IUHE-4.2 is not specifically designed for wireless charging applications.
Q7: Is LT3651IUHE-4.2 suitable for fast charging applications? A7: Yes, LT3651IUHE-4.2 supports fast charging with its high charging current capability.
Q8: What is the recommended operating temperature range for LT3651IUHE-4.2? A8: The recommended operating temperature range for LT3651IUHE-4.2 is typically between -40°C and 85°C.
Q9: Can LT3651IUHE-4.2 be used in automotive applications? A9: Yes, LT3651IUHE-4.2 is suitable for automotive applications as it meets the necessary requirements.
Q10: Does LT3651IUHE-4.2 have an enable pin for controlling charging? A10: Yes, LT3651IUHE-4.2 has an enable pin that can be used to control the charging process.
Please note that these answers are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed information.