LT3651EUHE-8.2#TRPBF

Product Overview

Category

LT3651EUHE-8.2#TRPBF belongs to the category of integrated circuits (ICs) and specifically falls under the battery management ICs.

Use

This product is primarily used for charging and managing lithium-ion batteries in various electronic devices.

Characteristics

• Input Voltage Range: 4V to 32V
• Output Voltage: 8.2V
• Charging Current: Up to 2A
• Package Type: 16-Lead 3mm x 3mm QFN
• Essence: Battery management and charging solution
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

The LT3651EUHE-8.2#TRPBF has the following specifications:

• Input Voltage Range: 4V to 32V
• Output Voltage: 8.2V ± 1%
• Maximum Charging Current: 2A
• Charge Termination Current: 10% of the programmed charge current
• Precharge Current: 10% of the programmed charge current
• Operating Temperature Range: -40°C to 85°C
• Package Type: 16-Lead 3mm x 3mm QFN

Detailed Pin Configuration

The LT3651EUHE-8.2#TRPBF has a 16-lead QFN package with the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VFB: Feedback voltage pin
4. ISET: Charge current set pin
5. STAT: Status indicator pin
6. TS: Thermal shutdown pin
7. PROG: Programming pin
8. BAT: Battery connection pin
9. PGND: Power ground pin
10. VCC: Internal regulator output pin
11. FLT: Fault indicator pin
12. EN: Enable pin
13. ILIM: Input current limit pin
14. SDA: I2C data pin
15. SCL: I2C clock pin
16. NC: No connection

Functional Features

The LT3651EUHE-8.2#TRPBF offers the following functional features:

1. High Efficiency Charging: The IC provides a highly efficient charging solution for lithium-ion batteries, ensuring maximum power transfer and minimal energy loss.

2. Programmable Charge Current: The charge current can be easily programmed using an external resistor, allowing flexibility in battery charging rates.

3. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection to prevent overheating and ensure safe operation under extreme temperature conditions.

4. Status Indication: The status indicator pin provides visual feedback on the charging process, indicating when the battery is fully charged or if any fault conditions occur.

5. I2C Interface: The LT3651EUHE-8.2#TRPBF supports an I2C interface, enabling communication with a microcontroller or other devices for advanced battery management and monitoring.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High charging efficiency minimizes energy loss.
• Programmable charge current offers flexibility in battery charging rates.
• Thermal shutdown protection ensures safe operation.
• I2C interface enables advanced battery management capabilities.

Disadvantages

• Limited to lithium-ion battery charging applications.
• Requires additional external components for complete battery management system implementation.

Working Principles

The LT3651EUHE-8.2#TRPBF operates based on a switching regulator architecture. It utilizes a high-frequency switching converter to efficiently regulate the charging current and voltage for lithium-ion batteries. The IC incorporates a programmable charge current control, thermal shutdown protection, and status indication features to ensure safe and efficient battery charging.

Detailed Application Field Plans

The LT3651EUHE-8.2#TRPBF finds applications in various electronic devices that utilize lithium-ion batteries, such as:

1. Portable Consumer Electronics: Smartphones, tablets, portable media players, and digital cameras.
2. Wearable Devices: Smartwatches, fitness trackers, and wireless earbuds.
3. Portable Medical Devices: Blood glucose monitors, pulse oximeters, and portable nebulizers.
4. Industrial Equipment: Handheld measurement devices, portable data loggers, and wireless sensors.
5. Automotive Electronics: Dashcams, GPS trackers, and portable jump starters.

Detailed and Complete Alternative Models

1. LTC4000-1: Battery Charger IC with Maximum Power Point Tracking (MPPT) capability.
2. MCP73871: Standalone Linear Li-Ion/Li-Polymer Charge Management Controller.
3. BQ24075: Single-Chip Li-Ion/Li-Polymer Battery Charger with Integrated FETs.
4. MAX1555: Stand-Al