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LTC4077EDD#PBF
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LTC4077EDD#PBF

Product Overview

Category

The LTC4077EDD#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the battery charger ICs.

Use

This product is primarily used for charging single-cell lithium-ion/polymer batteries. It provides a complete charging solution with various features and protections.

Characteristics

  • Integrated battery charger IC
  • Suitable for single-cell lithium-ion/polymer batteries
  • Complete charging solution
  • Multiple features and protections
  • High efficiency charging
  • Small package size
  • Low power consumption

Package

The LTC4077EDD#PBF comes in a DFN (Dual Flat No-Lead) package, which is a small and surface-mountable package. This package offers excellent thermal performance and compactness.

Essence

The essence of the LTC4077EDD#PBF lies in its ability to efficiently charge single-cell lithium-ion/polymer batteries while providing necessary safety features and maintaining a small form factor.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

  • Input Voltage Range: 4.95V to 6V
  • Charge Current: Up to 950mA
  • Programmable Charge Termination Current
  • Preconditioning of Deeply Discharged Cells
  • Automatic Recharge
  • Battery Temperature Monitoring
  • Undervoltage Lockout
  • Thermal Shutdown Protection

Detailed Pin Configuration

The LTC4077EDD#PBF has the following pin configuration:

  1. VIN - Input voltage pin
  2. GND - Ground pin
  3. PROG - Charge termination current programming pin
  4. STAT - Status output pin
  5. CE - Charger enable pin
  6. TS - Battery temperature sense pin
  7. BAT - Battery connection pin

Functional Features

  1. High-efficiency charging: The LTC4077EDD#PBF offers high charging efficiency, ensuring maximum utilization of the input power.
  2. Programmable charge termination current: Users can set the charge termination current according to their battery requirements.
  3. Preconditioning of deeply discharged cells: This feature allows safe charging of batteries that have been deeply discharged.
  4. Automatic recharge: The IC automatically restarts the charging process if the battery voltage drops below a certain threshold after completion.
  5. Battery temperature monitoring: The LTC4077EDD#PBF includes a temperature sense pin to monitor the battery temperature during charging.
  6. Undervoltage lockout: The IC prevents charging if the input voltage falls below a specified threshold.
  7. Thermal shutdown protection: In case of excessive heat, the IC shuts down to prevent damage.

Advantages and Disadvantages

Advantages

  • Efficient charging with high power utilization
  • Flexibility in charge termination current programming
  • Safe charging of deeply discharged batteries
  • Automatic recharge feature ensures continuous charging
  • Battery temperature monitoring for enhanced safety
  • Protection against undervoltage and thermal shutdown

Disadvantages

  • Limited to single-cell lithium-ion/polymer batteries
  • Requires additional external components for a complete charging solution

Working Principles

The LTC4077EDD#PBF operates by regulating the charging current and voltage to ensure safe and efficient charging of single-cell lithium-ion/polymer batteries. It monitors the battery voltage, temperature, and other parameters to provide necessary protections and terminate the charging process when required.

Detailed Application Field Plans

The LTC4077EDD#PBF finds applications in various portable electronic devices, such as smartphones, tablets, digital cameras, and wearable devices. It is suitable for any application that requires efficient and reliable charging of single-cell lithium-ion/polymer batteries.

Detailed and Complete Alternative Models

  1. LTC4077EDD#TRPBF: Similar to LTC4077EDD#PBF, but available in tape and reel packaging with a quantity of 3000 units per reel.
  2. LTC4077IDD#PBF: A similar battery charger IC from the same family, but with an alternative package (DFN-10) and slightly different specifications.
  3. LTC4077XEDD#PBF: An extended temperature range version of LTC4077EDD#PBF, suitable for applications requiring operation in extreme temperature conditions.

These alternative models provide options based on packaging, quantity, and specific requirements of the application.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LTC4077EDD#PBF i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of LTC4077EDD#PBF in technical solutions:

  1. Q: What is LTC4077EDD#PBF? A: LTC4077EDD#PBF is a battery charger IC designed for single-cell lithium-ion/polymer batteries.

  2. Q: What is the input voltage range supported by LTC4077EDD#PBF? A: The input voltage range supported by LTC4077EDD#PBF is typically between 4.35V and 6V.

  3. Q: Can LTC4077EDD#PBF charge multiple batteries simultaneously? A: No, LTC4077EDD#PBF is designed to charge a single-cell lithium-ion/polymer battery at a time.

  4. Q: What is the maximum charging current provided by LTC4077EDD#PBF? A: LTC4077EDD#PBF can provide a maximum charging current of up to 950mA.

  5. Q: Does LTC4077EDD#PBF support USB charging? A: Yes, LTC4077EDD#PBF supports USB charging and can be powered from a USB port.

  6. Q: Is LTC4077EDD#PBF suitable for low-power applications? A: Yes, LTC4077EDD#PBF is designed for low-power applications and offers a low quiescent current.

  7. Q: Can LTC4077EDD#PBF operate with a wide temperature range? A: Yes, LTC4077EDD#PBF can operate within a temperature range of -40°C to +85°C.

  8. Q: Does LTC4077EDD#PBF have built-in overvoltage protection? A: Yes, LTC4077EDD#PBF has built-in overvoltage protection to prevent damage to the battery.

  9. Q: Can LTC4077EDD#PBF be used in portable devices like smartphones or tablets? A: Yes, LTC4077EDD#PBF is suitable for use in portable devices that require single-cell lithium-ion/polymer battery charging.

  10. Q: Are there any evaluation boards or reference designs available for LTC4077EDD#PBF? A: Yes, Linear Technology (now part of Analog Devices) provides evaluation boards and reference designs for LTC4077EDD#PBF to aid in its application.

Please note that these answers are general and may vary depending on specific design considerations and requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for accurate and detailed information.