LTC4162IUFD-SSTM#PBF

Product Overview

Category

The LTC4162IUFD-SSTM#PBF belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

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

Characteristics

• High efficiency: The LTC4162IUFD-SSTM#PBF offers high charging efficiency, ensuring maximum power transfer from the power source to the battery.
• Fast charging: It supports fast charging protocols, allowing for quick and efficient battery charging.
• Advanced protection features: This IC incorporates various protection mechanisms like overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe and reliable battery charging.
• Programmable charging parameters: Users can customize the charging parameters according to their specific requirements, providing flexibility in battery management.

Package

The LTC4162IUFD-SSTM#PBF is available in a small form factor package, making it suitable for space-constrained applications. The package type is SSTM, which stands for Small Shrink Thin Module.

Essence

The essence of the LTC4162IUFD-SSTM#PBF lies in its ability to efficiently charge and manage lithium-ion batteries, offering fast charging capabilities and advanced protection features.

Packaging/Quantity

This product is typically sold in reels or trays, with a standard quantity of 250 units per reel/tray.

Specifications

• Input Voltage Range: 4V to 38V
• Charging Current Range: Up to 3A
• Maximum Charging Voltage: 4.2V per cell
• Operating Temperature Range: -40°C to 85°C
• Control Interface: I2C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. SDA: I2C data pin
4. SCL: I2C clock pin
5. BAT: Battery connection pin
6. PROG: Programming pin for setting charging parameters
7. STAT: Status output pin
8. INTVCC: Internal voltage supply pin

Functional Features

• Constant current/constant voltage (CC/CV) charging algorithm
• Programmable charging parameters such as charge current, termination current, and termination voltage
• Automatic recharge feature to maintain battery capacity
• Battery temperature monitoring and protection
• LED status indicators for charging progress
• Fault detection and reporting

Advantages and Disadvantages

Advantages

• High charging efficiency ensures maximum power transfer
• Fast charging capability reduces charging time
• Advanced protection features ensure safe battery charging
• Customizable charging parameters provide flexibility
• Small form factor package suitable for space-constrained applications

Disadvantages

• Requires an external microcontroller or host system for control and monitoring
• Limited to lithium-ion battery charging applications

Working Principles

The LTC4162IUFD-SSTM#PBF operates based on the CC/CV charging algorithm commonly used for lithium-ion batteries. It regulates the charging current during the constant current phase until the battery voltage reaches a predetermined threshold. Then, it switches to the constant voltage phase, maintaining a steady voltage while reducing the charging current gradually. This approach ensures efficient and controlled charging of the battery.

The IC also incorporates various protection mechanisms to safeguard the battery and the charging circuitry. These include overvoltage protection, which prevents the battery from being charged beyond its safe voltage limit, and overcurrent protection, which limits the charging current to prevent damage to the battery and the IC itself. Additionally, thermal shutdown protection is implemented to prevent overheating of the IC during operation.

Detailed Application Field Plans

The LTC4162IUFD-SSTM#PBF is widely used in various portable electronic devices that rely on lithium-ion batteries. Some of the common application fields include:

1. Smartphones and tablets
2. Portable media players
3. Wearable devices
4. Wireless headphones and earbuds
5. Portable gaming consoles
6. GPS navigation devices
7. Portable medical devices

Detailed and Complete Alternative Models

• LTC4162IUFD-4.2: Similar to LTC4162IUFD-SSTM#PBF but with a different package type (not SSTM).
• LTC4162IUFD-3.7: Variant designed for charging lithium-ion batteries with a nominal voltage of 3.7V per cell.
• LTC4162IUFD-QFN: Alternative package option with a quad flat no-leads (QFN) package.

These alternative models offer similar functionality and features, providing options for different application requirements.

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