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LT3650EDD-4.2#PBF
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LT3650EDD-4.2#PBF

Product Overview

Category

The LT3650EDD-4.2#PBF belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging lithium-ion batteries in various electronic devices such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

  • Input Voltage Range: 4V to 8V
  • Output Voltage: 4.2V
  • Charging Current: Up to 2A
  • Efficiency: High efficiency charging with up to 94% efficiency
  • Thermal Regulation: Built-in thermal regulation to prevent overheating
  • Safety Features: Overvoltage protection, reverse battery protection, and short-circuit protection

Package

The LT3650EDD-4.2#PBF is available in a small form factor 12-pin DFN (Dual Flat No-Lead) package, which provides excellent thermal performance and compact size.

Essence

The essence of the LT3650EDD-4.2#PBF lies in its ability to efficiently charge lithium-ion batteries while providing necessary safety features and thermal regulation.

Packaging/Quantity

This product is typically sold in reels or tubes, containing a specified quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Input Voltage Range: 4V to 8V
  • Output Voltage: 4.2V
  • Charging Current: Up to 2A
  • Efficiency: Up to 94%
  • Operating Temperature Range: -40°C to 85°C
  • Package Type: 12-pin DFN

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. GND: Ground reference pin
  3. VFB: Feedback voltage pin
  4. VOUT: Output voltage pin
  5. ISET: Charging current set pin
  6. STAT: Status indicator pin
  7. PROG: Programming pin
  8. TS: Thermal shutdown pin
  9. BAT: Battery connection pin
  10. SS: Soft-start pin
  11. FLT: Fault indicator pin
  12. NC: No connection pin

Functional Features

  • Constant Current/Constant Voltage (CC/CV) Charging: The LT3650EDD-4.2#PBF provides a CC/CV charging profile, ensuring optimal charging for lithium-ion batteries.
  • Thermal Regulation: The built-in thermal regulation feature prevents the IC from overheating during charging, enhancing safety and reliability.
  • Safety Protection: The product incorporates overvoltage protection, reverse battery protection, and short-circuit protection to safeguard the battery and the charging circuitry.
  • Status Indication: The STAT pin provides status indication, allowing the user to monitor the charging process.

Advantages and Disadvantages

Advantages

  • High charging efficiency ensures faster charging times.
  • Compact package size allows for easy integration into various electronic devices.
  • Built-in safety features protect the battery and the charging circuitry.
  • Thermal regulation prevents overheating, enhancing reliability.

Disadvantages

  • Limited to charging lithium-ion batteries only.
  • Requires external components for complete charging circuit implementation.

Working Principles

The LT3650EDD-4.2#PBF operates on the principle of CC/CV charging. It starts by providing a constant current to the battery until it reaches its maximum voltage. Once the maximum voltage is reached, the charger switches to a constant voltage mode to prevent overcharging. The charging current and voltage are controlled through feedback mechanisms, ensuring safe and efficient charging.

Detailed Application Field Plans

The LT3650EDD-4.2#PBF finds applications in a wide range of portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth headsets - Wearable devices

Detailed and Complete Alternative Models

  1. LT3650EDD-4.1#PBF: Similar to LT3650EDD-4.2#PBF but with an output voltage of 4.1V.
  2. LT3650EDD-4.3#PBF: Similar to LT3650EDD-4.2#PBF but with an output voltage of 4.3V.
  3. LT3650EDD-4.4#PBF: Similar to LT3650EDD-4.2#PBF but with an output voltage of 4.4V.

These alternative models provide flexibility in charging different lithium-ion battery configurations with varying voltage requirements.

In conclusion, the LT3650EDD-4.2#PBF is a highly efficient integrated circuit designed for charging lithium-ion batteries in various portable electronic devices. Its compact size, safety features, and thermal regulation make it an ideal choice for battery charging applications.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LT3650EDD-4.2#PBF v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LT3650EDD-4.2#PBF in technical solutions:

  1. Q: What is the input voltage range for LT3650EDD-4.2#PBF? A: The input voltage range for LT3650EDD-4.2#PBF is typically between 4.95V and 32V.

  2. Q: What is the output voltage of LT3650EDD-4.2#PBF? A: The output voltage of LT3650EDD-4.2#PBF is fixed at 4.2V.

  3. Q: What is the maximum charging current supported by LT3650EDD-4.2#PBF? A: LT3650EDD-4.2#PBF can support a maximum charging current of up to 2A.

  4. Q: Can LT3650EDD-4.2#PBF charge multiple battery chemistries? A: No, LT3650EDD-4.2#PBF is specifically designed for charging lithium-ion (Li-Ion) batteries.

  5. Q: Does LT3650EDD-4.2#PBF have built-in thermal protection? A: Yes, LT3650EDD-4.2#PBF has built-in thermal protection to prevent overheating during charging.

  6. Q: Can LT3650EDD-4.2#PBF operate in a wide temperature range? A: Yes, LT3650EDD-4.2#PBF can operate within a temperature range of -40°C to 85°C.

  7. Q: Is LT3650EDD-4.2#PBF suitable for portable devices? A: Yes, LT3650EDD-4.2#PBF is commonly used in portable devices such as smartphones, tablets, and wearable devices.

  8. Q: Does LT3650EDD-4.2#PBF support USB charging? A: Yes, LT3650EDD-4.2#PBF supports USB charging and can be used in various USB-powered applications.

  9. Q: Can LT3650EDD-4.2#PBF operate with a wide input voltage range? A: Yes, LT3650EDD-4.2#PBF can efficiently operate with an input voltage range of 4.95V to 32V.

  10. Q: Is LT3650EDD-4.2#PBF suitable for fast charging applications? A: Yes, LT3650EDD-4.2#PBF is capable of providing fast charging capabilities with its maximum charging current of 2A.

Please note that these answers are based on general information about LT3650EDD-4.2#PBF and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult the manufacturer for detailed technical specifications and guidelines.