LTC4054ES5-4.2#TRPBF

Product Overview

Category

LTC4054ES5-4.2#TRPBF belongs to the category of battery charger ICs.

Use

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

Characteristics

• Input Voltage Range: 4.75V to 6V
• Charge Current: Up to 800mA
• Programmable Charge Current: 100mA to 800mA
• Charge Termination: C/10 or Timer
• Battery Recharge Threshold: 100mV
• Low Battery Status Output
• Automatic Recharge
• Thermal Regulation
• Reverse Battery Protection
• Package Type: SOT-23-5
• RoHS Compliant

Packaging/Quantity

The LTC4054ES5-4.2#TRPBF is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 4.75V to 6V
• Charge Voltage: 4.2V ±1%
• Charge Current: Up to 800mA
• Programmable Charge Current: 100mA to 800mA
• Charge Termination: C/10 or Timer
• Battery Recharge Threshold: 100mV
• Low Battery Status Output: 20% of VBAT
• Quiescent Current: 35µA
• Operating Temperature Range: -40°C to 85°C
• Package Type: SOT-23-5

Pin Configuration

The LTC4054ES5-4.2#TRPBF has the following pin configuration:

```

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| | --| VIN | --| GND | --| PROG | --| STAT | |___________| ```

Functional Features

1. Programmable Charge Current: The LTC4054ES5-4.2#TRPBF allows the charge current to be programmed between 100mA and 800mA, providing flexibility based on battery requirements.
2. Charge Termination Options: Charging can be terminated either by reaching C/10 or by a programmable timer, ensuring safe and efficient charging.
3. Low Battery Status Output: The device provides a low battery status output that indicates when the battery voltage drops below 20% of VBAT, allowing for timely action.
4. Automatic Recharge: Once the battery voltage falls below the recharge threshold, the LTC4054ES5-4.2#TRPBF automatically initiates the recharge process, eliminating the need for manual intervention.
5. Reverse Battery Protection: The IC incorporates reverse battery protection, safeguarding the battery and the charger from potential damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Programmable charge current enables customization based on battery requirements.
• Multiple charge termination options ensure safe and efficient charging.
• Low battery status output facilitates timely battery replacement.
• Automatic recharge feature eliminates the need for manual intervention.
• Reverse battery protection prevents damage to the battery and charger.

Disadvantages

• Limited to single-cell lithium-ion/polymer battery charging applications.
• SOT-23-5 package may require additional space compared to smaller packages.

Working Principles

The LTC4054ES5-4.2#TRPBF operates as a linear charger for single-cell lithium-ion/polymer batteries. It regulates the charging process by controlling the charge current and monitoring the battery voltage. The charge current can be programmed using the PROG pin, allowing flexibility based on battery requirements. Charging can be terminated either by reaching C/10 or by a programmable timer. The device also features automatic recharge, low battery status output, and reverse battery protection for enhanced safety and convenience.

Detailed Application Field Plans

The LTC4054ES5-4.2#TRPBF is widely used in portable electronic devices such as smartphones, tablets, digital cameras, and portable media players. It is also suitable for applications requiring single-cell lithium-ion/polymer battery charging, including wireless headsets, GPS devices, and wearable devices.

Detailed and Complete Alternative Models

1. MCP73831: Single-cell Li-Ion/Li-Polymer Charge Management Controller
2. MAX1555: Stand-Alone Linear Li+ Battery Charger
3. BQ24075: Single-Input, Single-Cell Li-Ion Battery Charger
4. TP4056: Linear Li-Ion Battery Charger with Thermal Regulation
5. LT3652: Power Tracking 2A Battery Charger

These alternative models offer similar functionality and can be considered based on specific application requirements.

In conclusion, the LTC4054ES5-4.2#TRPBF is a battery charger IC