LTC4063EDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger

Characteristics: - High Efficiency - Low Quiescent Current - Wide Input Voltage Range - Programmable Charge Current - Thermal Regulation for Optimal Charging - Automatic Recharge - Reverse Battery Protection - Overvoltage Protection - Undervoltage Lockout - Power Good Status Indicator

Package: DFN-10

Essence: The LTC4063EDD#TRPBF is a high-performance battery charger IC designed for various portable electronic devices. It offers efficient and reliable charging capabilities while providing protection features to ensure safe operation.

Packaging/Quantity: The LTC4063EDD#TRPBF is available in a DFN-10 package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4V to 40V
• Charge Voltage Range: 2.5V to 20V
• Charge Current Range: Up to 1.2A
• Quiescent Current: 35µA
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4063EDD#TRPBF has the following pin configuration:

```

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| | --| VIN GND|-- --| BAT STAT|-- --| PROG FLT |-- --| EN CE |-- |___________| ```

• VIN: Input Voltage
• BAT: Battery Connection
• STAT: Status Output
• PROG: Charge Current Programming
• FLT: Fault Output
• EN: Enable Input
• CE: Charge Enable Input
• GND: Ground

Functional Features

1. High Efficiency: The LTC4063EDD#TRPBF offers high charging efficiency, minimizing power loss during the charging process.

2. Low Quiescent Current: With a low quiescent current of 35µA, the IC ensures minimal power consumption when not actively charging.

3. Wide Input Voltage Range: The IC can accept input voltages ranging from 4V to 40V, making it suitable for various power sources.

4. Programmable Charge Current: The charge current can be programmed using an external resistor, allowing flexibility in charging different battery types.

5. Thermal Regulation for Optimal Charging: The IC incorporates thermal regulation to adjust the charging current based on the temperature, ensuring optimal charging performance and preventing overheating.

6. Automatic Recharge: After a battery is fully charged, the IC automatically enters a trickle charge mode to maintain the battery's capacity.

7. Protection Features: The LTC4063EDD#TRPBF includes reverse battery protection, overvoltage protection, and undervoltage lockout to safeguard the battery and the charging circuitry.

8. Power Good Status Indicator: The STAT pin provides a status output indicating the charging state, enabling easy monitoring of the charging process.

Advantages

• High charging efficiency
• Wide input voltage range
• Programmable charge current for versatility
• Comprehensive protection features
• Automatic recharge capability
• Power good status indicator for monitoring

Disadvantages

• Limited maximum charge current (up to 1.2A)
• Requires an external resistor for charge current programming

Working Principles

The LTC4063EDD#TRPBF operates as a switch-mode battery charger. It utilizes a constant-current/constant-voltage charging algorithm to efficiently charge lithium-ion or lithium-polymer batteries. The IC regulates the charging current and voltage based on the battery's characteristics and the programmed settings.

During the charging process, the IC monitors the battery voltage and adjusts the charging current accordingly. Once the battery reaches the programmed charge voltage, the IC switches to a constant-voltage mode, maintaining a steady voltage while reducing the charging current. This prevents overcharging and ensures the battery is charged optimally.

The IC also incorporates protection features such as reverse battery protection, overvoltage protection, and undervoltage lockout to prevent damage to the battery and the charging circuitry.

Detailed Application Field Plans

The LTC4063EDD#TRPBF is suitable for a wide range of portable electronic devices that require battery charging capabilities. Some potential application fields include:

1. Smartphones and Tablets: The IC can be used in smartphones and tablets to provide efficient and safe charging for their built-in lithium-ion batteries.

2. Portable Medical Devices: It can be employed in portable medical devices like blood glucose meters or pulse oximeters, ensuring reliable charging for critical healthcare equipment.

3. Wireless Headsets and Earbuds: The IC can be integrated into wireless headsets and earbuds, offering optimized charging performance and protection for their rechargeable batteries.