LT3652IMSE#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger

Characteristics: - High Efficiency - Wide Input Voltage Range - Programmable Charging Current - Thermal Regulation for Optimal Performance - Reverse Battery Protection - Overvoltage Protection - Under Voltage Lockout

Package: MSOP-10E

Essence: The LT3652IMSE#TRPBF is a high-efficiency battery charger IC designed for various portable devices. It offers a wide input voltage range and programmable charging current, making it suitable for a wide range of battery types and capacities.

Packaging/Quantity: The LT3652IMSE#TRPBF is available in a MSOP-10E package. It is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 4V to 45V
• Charging Current Range: 50mA to 2A
• Float Voltage: Programmable from 3.5V to 14.4V
• Charge Termination: Programmable C/10 or C/20
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LT3652IMSE#TRPBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. PROG: Programming Pin
4. ISET: Charging Current Set Pin
5. STAT: Status Indicator
6. SS: Soft-Start Pin
7. VFB: Feedback Voltage Pin
8. BAT: Battery Connection
9. TIMER: Timer Pin
10. FLT: Fault Indicator

Functional Features

• High efficiency synchronous buck charger
• Programmable charging current and float voltage
• Thermal regulation for optimal performance
• Reverse battery protection
• Overvoltage protection
• Under voltage lockout

Advantages and Disadvantages

Advantages: - Wide input voltage range allows compatibility with various power sources - Programmable charging current and float voltage for flexibility - High efficiency reduces power loss and heat generation - Thermal regulation ensures safe operation under different conditions - Reverse battery protection prevents damage to the charger and battery - Overvoltage protection safeguards against excessive voltage levels - Under voltage lockout protects the battery from deep discharge

Disadvantages: - Limited availability of alternative models - Relatively high cost compared to some other battery charger ICs

Working Principles

The LT3652IMSE#TRPBF operates as a synchronous buck charger, converting the input voltage to a regulated charging voltage for the battery. It uses a high-efficiency switching regulator to minimize power loss and maximize charging efficiency. The charging current and float voltage can be programmed using external resistors, allowing customization for different battery types and capacities.

The IC incorporates thermal regulation to adjust the charging current based on the temperature, ensuring optimal performance and preventing overheating. It also includes reverse battery protection to prevent damage in case of incorrect battery connection, and overvoltage protection to safeguard against excessive voltage levels.

Detailed Application Field Plans

The LT3652IMSE#TRPBF is widely used in various portable devices that require battery charging capabilities. Some common application fields include:

1. Mobile Phones and Smartphones
2. Tablets and Laptops
3. Portable Media Players
4. Digital Cameras
5. Portable Gaming Devices
6. Wireless Headsets
7. GPS Navigation Systems
8. Portable Medical Devices
9. Handheld Test Equipment
10. Industrial Portable Devices

Detailed and Complete Alternative Models

While the LT3652IMSE#TRPBF is a popular choice for battery charging applications, there are several alternative models available in the market. Some notable alternatives include:

1. MCP73871: Integrated Linear Charge Management Controller
2. BQ24075: Single-Input, Single-Cell Li-Ion Battery Charger
3. MAX1555: Stand-Alone NiMH/NiCd Battery Charger
4. LTC4000: High Voltage High Current Controller for Battery Charging

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

In conclusion, the LT3652IMSE#TRPBF is a versatile battery charger IC with high efficiency and programmable charging capabilities. Its wide input voltage range and thermal regulation make it suitable for various portable devices. While it has some limitations in terms of availability and cost, there are alternative models available to meet specific design needs.