LTC4006EGN-6#PBF

Product Overview

Category

The LTC4006EGN-6#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, laptops, and portable power banks.

Characteristics

• High efficiency: The LTC4006EGN-6#PBF offers high charging efficiency, ensuring optimal use of power during the charging process.
• Fast charging: It supports fast charging capabilities, reducing the overall charging time for lithium-ion batteries.
• Safety features: This IC incorporates multiple safety features like overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe and reliable battery charging.
• Wide input voltage range: The LTC4006EGN-6#PBF can accept a wide range of input voltages, making it suitable for various charging scenarios.
• Compact package: It comes in a small form factor package, allowing for easy integration into space-constrained electronic devices.

Package and Quantity

The LTC4006EGN-6#PBF is available in a 16-pin SSOP (Shrink Small Outline Package) package. It is typically sold in reels containing a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 36V
• Charging Current Range: Up to 3A
• Charging Voltage: Programmable from 2.5V to 4.2V
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4006EGN-6#PBF has a total of 16 pins. Here is the detailed pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VCC: Supply voltage pin
4. BAT: Battery connection pin
5. PROG: Programming pin for charging voltage
6. ISET: Current limit setting pin
7. STAT: Status output pin
8. TIMER: Timer control pin
9. TS: Temperature sense pin
10. ILIM: Current limit programming pin
11. SENSE+: Positive terminal of sense resistor
12. SENSE-: Negative terminal of sense resistor
13. FREQ: Frequency selection pin
14. SS: Soft-start control pin
15. FLT: Fault indicator pin
16. PGND: Power ground pin

Functional Features

• Constant current/constant voltage (CC/CV) charging algorithm
• Automatic recharge feature after battery discharge
• Programmable charging voltage and current limits
• Thermal regulation to prevent overheating during charging
• Charge termination based on battery voltage and current thresholds
• Reverse battery protection
• LED status indicators for charging progress

Advantages and Disadvantages

Advantages

• High charging efficiency ensures optimal use of power.
• Fast charging capability reduces overall charging time.
• Multiple safety features provide reliable and safe charging.
• Wide input voltage range allows for versatile applications.
• Compact package enables easy integration into electronic devices.

Disadvantages

• Limited to lithium-ion battery charging applications.
• Requires proper programming and configuration for optimal performance.

Working Principles

The LTC4006EGN-6#PBF operates based on a CC/CV charging algorithm. It starts by delivering a constant current to the battery until a predefined voltage threshold is reached. At this point, it switches to a constant voltage mode, maintaining the battery voltage at the programmed level while reducing the charging current gradually. Once the charging current drops below a specified threshold, the charging process terminates.

The IC continuously monitors the battery voltage, current, and temperature to ensure safe and efficient charging. It incorporates various protection mechanisms to prevent overvoltage, overcurrent, and overheating conditions.

Detailed Application Field Plans

The LTC4006EGN-6#PBF finds extensive application in the following fields:

1. Consumer Electronics: Used for charging lithium-ion batteries in smartphones, tablets, laptops, and portable power banks.
2. Industrial Equipment: Integrated into battery-powered industrial devices like handheld tools, wireless sensors, and portable measurement instruments.
3. Medical Devices: Employed in medical equipment that relies on rechargeable lithium-ion batteries, such as portable monitors, infusion pumps, and diagnostic devices.
4. Automotive: Utilized in electric vehicles (EVs) and hybrid electric vehicles (HEVs) for charging their lithium-ion battery packs.
5. Energy Storage Systems: Incorporated into residential and commercial energy storage systems to manage the charging of lithium-ion battery banks.

Detailed and Complete Alternative Models

1. LTC4006EGN-4.2#PBF: Similar to LTC4006EGN-6#PBF but with a fixed charging voltage of 4.2V.
2. LTC4006