LTC4069EDC#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 maximum charging rate - Automatic recharge - Charge termination by timer or current - Reverse battery protection - Overvoltage protection - Undervoltage lockout - Power good status output

Package: DFN-10 (3mm x 3mm)

Essence: The LTC4069EDC#TRPBF is a high-efficiency standalone linear battery charger IC designed for single-cell lithium-ion/polymer batteries. It provides a complete charging solution with various features to ensure safe and efficient charging.

Packaging/Quantity: The LTC4069EDC#TRPBF is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6V
• Charge Current Range: 100mA to 1A
• Precharge Current: 10% of programmed charge current
• Charge Termination: Timer or current
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LTC4069EDC#TRPBF has the following pin configuration:

1. VBAT: Battery voltage input
2. PROG: Charge current programming pin
3. STAT: Status output pin
4. GND: Ground
5. TS: Thermal sense input
6. EN: Enable pin
7. TIMER: Timer programming pin
8. CE: Charge enable input
9. ILIM: Input current limit programming pin
10. VIN: Input voltage supply

Functional Features

1. High Efficiency: The LTC4069EDC#TRPBF offers high charging efficiency, minimizing power loss during the charging process.
2. Programmable Charge Current: The charge current can be easily programmed using the PROG pin, allowing flexibility in charging different battery capacities.
3. Thermal Regulation: The IC incorporates thermal regulation to maximize the charging rate while preventing overheating.
4. Automatic Recharge: After a battery is fully charged, the LTC4069EDC#TRPBF automatically enters a low-power state and monitors the battery voltage. If the voltage drops below a certain threshold, it initiates a recharge cycle.
5. Protection Features: The IC includes reverse battery protection, overvoltage protection, and undervoltage lockout to ensure safe charging and prevent damage to the battery or the charger itself.
6. Power Good Status Output: The STAT pin provides a status output signal indicating the charging status, enabling easy integration with external systems.

Advantages and Disadvantages

Advantages: - High charging efficiency - Programmable charge current for flexibility - Thermal regulation for optimal charging rate - Automatic recharge feature ensures battery readiness - Comprehensive protection features for safe charging - Power good status output for easy integration

Disadvantages: - Limited to single-cell lithium-ion/polymer batteries - Requires external components for complete charging circuit implementation

Working Principles

The LTC4069EDC#TRPBF operates as a standalone linear battery charger. 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, and the charging termination can be based on either a timer or a specific current level. The IC also incorporates thermal regulation to optimize the charging rate while preventing overheating. It provides various protection features such as reverse battery protection, overvoltage protection, and undervoltage lockout to ensure safe charging.

Detailed Application Field Plans

The LTC4069EDC#TRPBF is suitable for a wide range of applications that require single-cell lithium-ion/polymer battery charging. Some potential application fields include: - Portable electronic devices - Wireless communication devices - Medical devices - Industrial equipment - IoT devices - Wearable devices

Detailed and Complete Alternative Models

1. MCP73831: Standalone linear Li-Ion battery charger with similar features and package.
2. MAX1555: Integrated single-cell Li-Ion battery charger with programmable charge current and thermal regulation.
3. BQ24075: Single-cell Li-Ion battery charger with integrated power path management and USB detection.

These alternative models offer similar functionality and can be considered as alternatives to the LTC4069EDC#TRPBF depending on specific requirements and preferences.

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