LTC4065LXEDC-4.1#TRMPBF

Product Overview

Category

The LTC4065LXEDC-4.1#TRMPBF belongs to the category of integrated circuits (ICs) and specifically falls under the battery charger ICs.

Use

This product is primarily used for charging single-cell lithium-ion/polymer batteries in various portable electronic devices such as smartphones, tablets, digital cameras, and portable media players.

Characteristics

• Input Voltage Range: 4.95V to 6.5V
• Charge Current: Up to 950mA
• Programmable Charge Current Limit
• Automatic Recharge
• Thermal Regulation for Optimal Charging Rate
• Undervoltage Lockout
• Overvoltage Protection
• Reverse Battery Protection
• Status Indication Outputs
• Low Profile (0.75mm) DFN Package

Package

The LTC4065LXEDC-4.1#TRMPBF is available in a low-profile 10-lead DFN (Dual Flat No-Lead) package, which ensures efficient heat dissipation and compact design integration.

Essence

The essence of LTC4065LXEDC-4.1#TRMPBF lies in its ability to provide a reliable and efficient charging solution for single-cell lithium-ion/polymer batteries, ensuring optimal performance and safety.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.95V to 6.5V
• Charge Voltage: 4.1V
• Charge Current: Up to 950mA
• Preconditioning Current: 10% of Programmed Charge Current
• Charge Termination: C/10
• Charge Accuracy: ±0.5%
• Operating Temperature Range: -40°C to 85°C
• Package Type: 10-Lead DFN

Detailed Pin Configuration

1. VIN: Input Voltage Pin
2. GND: Ground Pin
3. PROG: Charge Current Programming Pin
4. STAT: Status Indication Output Pin
5. CE: Charger Enable Pin
6. TS: Thermal Sense Pin
7. BAT: Battery Connection Pin
8. NTC: Negative Temperature Coefficient Thermistor Pin
9. VOUT: Regulated Output Voltage Pin
10. VSSOP: Voltage Supply for the IC Pin

Functional Features

• Programmable charge current limit allows flexibility in battery charging rate.
• Automatic recharge feature ensures continuous charging when the battery voltage drops below a certain threshold.
• Thermal regulation optimizes the charging rate based on the temperature, preventing overheating and enhancing battery life.
• Undervoltage lockout protects the battery from being discharged beyond safe limits.
• Overvoltage protection safeguards the battery from excessive voltage during charging.
• Reverse battery protection prevents damage caused by accidental reverse polarity connection.
• Status indication outputs provide visual feedback on the charging process.
• Low-profile package enables space-efficient integration into portable electronic devices.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High charge current capability enables faster charging times.
• Programmable charge current limit offers flexibility in battery charging rate selection.
• Automatic recharge feature ensures uninterrupted charging.
• Thermal regulation optimizes charging efficiency and battery lifespan.
• Comprehensive protection features enhance safety and reliability.
• Compact package facilitates integration into space-constrained designs.

Disadvantages

• Limited to single-cell lithium-ion/polymer battery charging applications.
• Not suitable for multi-cell battery systems.

Working Principles

The LTC4065LXEDC-4.1#TRMPBF operates as a linear battery charger IC. It regulates the charging process by controlling the charge current and monitoring the battery voltage and temperature. The charge current can be programmed using an external resistor connected to the PROG pin. The IC employs thermal regulation to adjust the charging rate based on the temperature, ensuring optimal performance and preventing overheating.

The charger includes various protection features such as undervoltage lockout, overvoltage protection, and reverse battery protection to safeguard the battery and the charging circuitry from potential damage. The status indication outputs provide visual feedback on the charging process, allowing users to monitor the battery's state.

Detailed Application Field Plans

The LTC4065LXEDC-4.1#TRMPBF is widely used in portable electronic devices that require single-cell lithium-ion/polymer battery charging. Some common application fields include:

1. Smartphones
2. Tablets
3. Digital Cameras
4. Portable Media Players
5. Bluetooth Headsets
6. GPS Devices
7. Wearable Electronics

Detailed and Complete Alternative Models

1. MCP73831: Single-cell Li-Ion/Li-Po Battery Charger IC