LTC4065EDC-4.4#TRPBF

Product Overview

Category

The LTC4065EDC-4.4#TRPBF belongs to the category of battery charger ICs (Integrated Circuits).

Use

This product is primarily used for charging single-cell lithium-ion/polymer batteries.

Characteristics

The LTC4065EDC-4.4#TRPBF offers several key characteristics: - It provides a complete constant-current/constant-voltage charge controller for single-cell lithium-ion/polymer batteries. - The device operates from a USB port or an AC wall adapter, making it versatile for various charging scenarios. - It features a programmable charge current up to 950mA, allowing flexibility in charging rates. - The LTC4065EDC-4.4#TRPBF includes an automatic recharge feature, ensuring the battery remains fully charged.

Package and Quantity

This product is available in a small 6-pin DFN (Dual Flat No-Lead) package. It is typically sold in reels of 2500 units.

Specifications

The LTC4065EDC-4.4#TRPBF has the following specifications:

• Input Voltage Range: 4.35V to 6V
• Charge Current Range: Up to 950mA
• Charge Voltage: 4.4V
• Preconditioning Current: 10% of programmed charge current
• Automatic Recharge Threshold: 100mV below the programmed float voltage
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4065EDC-4.4#TRPBF has a 6-pin DFN package with the following pin configuration:

1. VBAT: Battery Output
2. PROG: Charge Current Programming Pin
3. STAT: Status Indicator Output
4. GND: Ground
5. VCC: Input Supply Voltage
6. TS: Thermal Shutdown

Functional Features

The LTC4065EDC-4.4#TRPBF offers the following functional features:

1. Constant-Current/Constant-Voltage Charging: The device provides a complete charge controller for lithium-ion/polymer batteries, ensuring optimal charging performance.
2. Programmable Charge Current: The charge current can be programmed up to 950mA, allowing flexibility in charging rates based on battery requirements.
3. Automatic Recharge: The LTC4065EDC-4.4#TRPBF automatically initiates recharge when the battery voltage drops below a certain threshold, ensuring the battery remains fully charged.
4. Status Indicator Output: The STAT pin provides an indication of the charging status, enabling easy monitoring of the charging process.

Advantages and Disadvantages

Advantages

• Versatile charging options with support for USB ports and AC wall adapters.
• Programmable charge current allows customization based on battery requirements.
• Automatic recharge feature ensures the battery remains fully charged.
• Small package size enables space-efficient designs.

Disadvantages

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

Working Principles

The LTC4065EDC-4.4#TRPBF operates by providing a constant-current/constant-voltage charging profile for single-cell lithium-ion/polymer batteries. It regulates the charge current and voltage to ensure safe and efficient charging. The device can be powered from either a USB port or an AC wall adapter, making it suitable for various charging scenarios.

The charge current can be programmed using the PROG pin, allowing flexibility in charging rates. The automatic recharge feature monitors the battery voltage and initiates recharge when it drops below a certain threshold, preventing the battery from discharging excessively.

The STAT pin provides a status indicator output, allowing easy monitoring of the charging process. The device also includes thermal shutdown protection (TS pin) to prevent overheating.

Detailed Application Field Plans

The LTC4065EDC-4.4#TRPBF finds applications in various fields, including but not limited to: 1. Portable electronic devices: Used for charging batteries in smartphones, tablets, and portable media players. 2. Wearable devices: Enables battery charging in smartwatches, fitness trackers, and other wearable gadgets. 3. IoT devices: Suitable for charging batteries in small IoT devices such as sensors, beacons, and wireless modules. 4. Medical devices: Used in portable medical equipment that requires battery charging, such as handheld monitors and diagnostic devices.

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the LTC4065EDC-4.4#TRPBF:

1. MCP73831: Single-cell lithium-ion/polymer charge management controller from Microchip Technology.
2. BQ24075: Integrated single-cell Li-Ion battery charger from Texas Instruments.
3. MAX1555: Stand-alone