LTC4065AEDC#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 Output

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

Essence: The LTC4065AEDC#TRPBF is a high-efficiency standalone linear battery charger designed for single-cell lithium-ion/polymer batteries. It provides a complete charging solution with minimal external components.

Packaging/Quantity: The LTC4065AEDC#TRPBF is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6V
• Charge Voltage: 4.2V ±1%
• Charge Current Range: 100mA to 950mA
• Quiescent Current: 55µA
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4065AEDC#TRPBF has the following pin configuration:

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| | | 1 2 3 | | | | 4 5 6 | | | | 7 8 9 | | | | 10 | |_______________| ```

1. VBAT: Battery Input
2. PROG: Charge Current Programming Pin
3. STAT: Power Good Status Output
4. GND: Ground
5. VCC: Supply Voltage Input
6. TS: Thermal Regulation Pin
7. NTC: Negative Temperature Coefficient Input
8. CE: Charge Enable Input
9. BAT: Battery Output
10. FLT: Fault Indicator Output

Functional Features

• High-efficiency charging with thermal regulation for optimal battery charging.
• Programmable charge current allows flexibility in charging different battery capacities.
• Automatic recharge feature restarts charging if the battery voltage drops below a certain threshold.
• Reverse battery protection prevents damage to the charger and battery in case of reverse polarity connection.
• Overvoltage protection safeguards the battery from excessive voltage levels.
• Undervoltage lockout protects the battery from being charged when the input voltage is too low.
• Power good status output indicates the charging status.

Advantages and Disadvantages

Advantages: - High efficiency ensures maximum utilization of input power. - Wide input voltage range allows compatibility with various power sources. - Programmable charge current offers flexibility for different battery capacities. - Thermal regulation optimizes charging performance and extends battery life. - Automatic recharge feature ensures continuous charging even after battery discharge. - Reverse battery protection prevents damage due to incorrect battery connection. - Overvoltage and undervoltage protection enhance safety and reliability. - Power good status output provides charging status indication.

Disadvantages: - Limited to single-cell lithium-ion/polymer batteries. - Not suitable for charging multiple batteries simultaneously.

Working Principles

The LTC4065AEDC#TRPBF operates as a standalone linear battery charger. It utilizes a high-efficiency charging algorithm to efficiently charge single-cell lithium-ion/polymer batteries. The charge current can be programmed using an external resistor connected to the PROG pin. The charger incorporates thermal regulation to optimize charging performance and prevent overheating.

The device features automatic recharge, which monitors the battery voltage and restarts charging if the voltage drops below a certain threshold. It also provides protection against reverse battery connection, overvoltage, and undervoltage conditions. The power good status output indicates the charging status, allowing easy monitoring.

Detailed Application Field Plans

The LTC4065AEDC#TRPBF is suitable for various 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 - Consumer electronics

Detailed and Complete Alternative Models

1. MCP73831: Standalone Linear Li-Ion Battery Charger
2. MAX1555: Single-Cell Li+ Battery Charger
3. BQ24075: Single-Cell Li-Ion Battery Charger
4. LT3652: 2A, 18V Input, 55V Buck-Boost Battery Charger
5. TP4056: Lithium Battery Charging Module

These alternative models offer similar functionality and can be considered as alternatives to the LTC4065AEDC#TRPBF depending on specific requirements and design constraints.

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