LTC4052EMS8E-4.2#TRPBF

Product Overview

Category

The LTC4052EMS8E-4.2#TRPBF belongs to the category of battery charger ICs.

Use

This product is primarily used for charging lithium-ion batteries.

Characteristics

• Package: MSOP-8
• Essence: Battery charger IC with thermal regulation and constant current/constant voltage (CC/CV) operation.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

The LTC4052EMS8E-4.2#TRPBF has the following specifications:

• Input Voltage Range: 4.5V to 6.5V
• Charge Current: Up to 800mA
• Float Voltage: 4.2V ±1%
• Preconditioning Current: 10% of programmed charge current
• Thermal Regulation: 100°C
• Charge Termination: C/10
• Reverse Leakage Current: <1µA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LTC4052EMS8E-4.2#TRPBF has the following pin configuration:

1. VBAT - Battery Voltage Input
2. PROG - Charge Current Programming Pin
3. STAT - Status Output Pin
4. GND - Ground
5. CE - Charge Enable Pin
6. TS - Thermal Sense Pin
7. VCC - Supply Voltage Input
8. VFB - Feedback Voltage Input

Functional Features

The LTC4052EMS8E-4.2#TRPBF offers the following functional features:

• Thermal regulation to prevent overheating during charging.
• Constant current/constant voltage (CC/CV) operation for efficient and safe charging.
• Programmable charge current for flexibility in charging different battery capacities.
• Status output pin to indicate the charging status.
• Reverse leakage current protection to prevent battery discharge.

Advantages and Disadvantages

Advantages

• Efficient and safe charging of lithium-ion batteries.
• Thermal regulation prevents overheating, ensuring battery longevity.
• Programmable charge current allows for flexibility in charging different battery capacities.

Disadvantages

• Limited input voltage range (4.5V to 6.5V).
• Not suitable for charging batteries with voltages other than 4.2V.

Working Principles

The LTC4052EMS8E-4.2#TRPBF operates on the principle of constant current/constant voltage (CC/CV) charging. It starts by supplying a constant current to the battery until the battery voltage reaches the float voltage of 4.2V. Once the float voltage is reached, the charger switches to constant voltage mode, maintaining the battery voltage at 4.2V while reducing the charging current gradually. This ensures efficient and safe charging without overcharging the battery.

Detailed Application Field Plans

The LTC4052EMS8E-4.2#TRPBF is widely used in various applications that require lithium-ion battery charging. Some of the detailed application field plans include:

1. Portable electronic devices: This IC is commonly used in smartphones, tablets, and portable media players to provide reliable and efficient battery charging.

2. Wearable devices: Smartwatches, fitness trackers, and other wearable devices often utilize the LTC4052EMS8E-4.2#TRPBF for their battery charging needs.

3. Medical devices: Many medical devices, such as portable monitors and handheld diagnostic tools, rely on this IC for charging their lithium-ion batteries.

4. Industrial equipment: The LTC4052EMS8E-4.2#TRPBF finds applications in various industrial equipment, including handheld meters, data loggers, and portable sensors.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LTC4052EMS8E-4.2#TRPBF include:

1. MCP73831: A compact, standalone linear Li-Ion/Li-Polymer charge management controller.
2. BQ24075: A highly integrated single-cell Li-Ion battery charger and system power path management device.
3. MAX1555: A highly integrated lithium-ion battery charger with a USB-friendly interface.

These alternative models provide options for designers based on specific requirements and design constraints.

In conclusion, the LTC4052EMS8E-4.2#TRPBF is a battery charger IC designed for efficient and safe charging of lithium-ion batteries. With its thermal regulation, constant current/constant voltage operation, and programmable charge current, it offers advantages in terms of battery longevity and flexibility. However, it has limitations in terms of input voltage range and compatibility with batteries other than 4.2V. It finds applications in various fields such as portable electronics, wearables, medical devices,