LT3650EDD-8.2#TRPBF

Product Overview

Category

The LT3650EDD-8.2#TRPBF 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, portable media players, and other portable electronic devices.

Characteristics

• Input Voltage Range: 4V to 40V
• Output Voltage: 8.2V
• Charging Current: Up to 2A
• Package Type: DFN-12
• Essence: High-efficiency battery charger IC with thermal regulation and constant current/constant voltage charging algorithm.
• Packaging/Quantity: The LT3650EDD-8.2#TRPBF is typically sold in reels containing 250 units.

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage: 8.2V ±1%
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Charge Termination: Programmable timer or C/10 termination
• Battery Float Voltage: 4.2V
• Battery Absorption Voltage: 4.1V
• Battery Trickle Charge Voltage: 4.05V
• Battery Recharge Threshold: 3.9V
• Thermal Regulation: Yes
• Reverse Battery Protection: Yes
• Short-Circuit Protection: Yes
• Package Type: DFN-12

Detailed Pin Configuration

The LT3650EDD-8.2#TRPBF package consists of 12 pins arranged as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Programming pin for setting the charge termination current
4. ISET: Programming pin for setting the charging current
5. STAT: Status output pin indicating charging status
6. FLT: Fault indicator output pin
7. TS: Thermal shutdown pin
8. BAT: Battery voltage sense pin
9. VFB: Feedback voltage pin
10. SS: Soft-start capacitor pin
11. PGND: Power ground pin
12. VOUT: Output voltage pin

Functional Features

• High-efficiency charging: The LT3650EDD-8.2#TRPBF utilizes a high-efficiency switching regulator to maximize charging efficiency and minimize power dissipation.
• Thermal regulation: The IC incorporates thermal regulation to prevent overheating during charging, ensuring safe operation.
• Constant current/constant voltage charging: The LT3650EDD-8.2#TRPBF employs a constant current/constant voltage charging algorithm to optimize battery charging performance.
• Programmable charge termination: The charge termination current can be programmed using the PROG pin, allowing flexibility in charging different battery types.
• Reverse battery protection: The IC includes reverse battery protection to prevent damage in case of accidental reverse battery connection.
• Short-circuit protection: The LT3650EDD-8.2#TRPBF features built-in short-circuit protection to safeguard against potential damage caused by short circuits.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High charging efficiency reduces power consumption and charging time.
• Thermal regulation ensures safe and reliable charging.
• Programmable charge termination provides flexibility for different battery types.
• Built-in reverse battery and short-circuit protection enhance safety.

Disadvantages

• Limited output voltage options may not be suitable for all applications.
• Requires external components for complete charging circuit implementation.

Working Principles

The LT3650EDD-8.2#TRPBF operates by converting the input voltage to a regulated output voltage suitable for charging lithium-ion batteries. It employs a switching regulator topology to achieve high efficiency and minimize power dissipation. The IC utilizes a constant current/constant voltage charging algorithm to optimize battery charging performance. Thermal regulation is implemented to prevent overheating during charging, ensuring safe operation.

Detailed Application Field Plans

The LT3650EDD-8.2#TRPBF is widely used in various portable electronic devices that require lithium-ion battery charging capabilities. Some common application fields include: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Wearable devices - GPS navigation systems - Portable gaming consoles

Detailed and Complete Alternative Models

1. LT3650EDD-8.4#TRPBF: Similar to LT3650EDD-8.2#TRPBF, but with an output voltage of 8.4V.
2. LT3650EDD-7.4#TRPBF: Similar to LT3650EDD-8.2#TRPBF, but with