LTC4066EPF#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger

Characteristics: - High efficiency - Fast charging capability - Wide input voltage range - Multiple charging modes - Thermal regulation - Overvoltage protection - Undervoltage lockout - Reverse battery protection

Package: 20-Lead TSSOP

Essence: The LTC4066EPF#PBF is a high-performance battery charger IC designed for various portable electronic devices. It offers efficient and fast charging capabilities while providing multiple charging modes to accommodate different battery chemistries.

Packaging/Quantity: The LTC4066EPF#PBF is available in a 20-Lead Thin Shrink Small Outline Package (TSSOP). It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4V to 40V
• Charge Current Range: Up to 2A
• Charging Termination Options: C/10 or Timer
• Battery Chemistry Compatibility: Li-Ion, Li-Polymer, LiFePO4
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4066EPF#PBF has the following pin configuration:

1. VCC
2. GND
3. PROG
4. STAT
5. TIMER
6. ISET
7. TS
8. BAT
9. NTC
10. ILIM
11. CE
12. SCL
13. SDA
14. INTVCC
15. INTVCC
16. INTVCC
17. INTVCC
18. INTVCC
19. INTVCC
20. INTVCC

Functional Features

1. High Efficiency: The LTC4066EPF#PBF incorporates a high-efficiency switching regulator to maximize charging efficiency and minimize power dissipation.

2. Fast Charging Capability: With its high charge current capability, the LTC4066EPF#PBF enables fast charging of batteries, reducing charging time.

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

4. Multiple Charging Modes: The LTC4066EPF#PBF supports multiple charging modes, including constant current, constant voltage, and trickle charge, allowing compatibility with different battery chemistries.

5. Thermal Regulation: The IC features thermal regulation to prevent overheating during charging, ensuring safe operation.

6. Overvoltage Protection: It provides overvoltage protection to safeguard the battery and connected devices from excessive voltage levels.

7. Undervoltage Lockout: The LTC4066EPF#PBF includes undervoltage lockout functionality to protect the battery from being discharged below a safe threshold.

8. Reverse Battery Protection: It offers reverse battery protection, preventing damage to the IC and connected circuitry in case of reverse battery insertion.

Advantages

• High charging efficiency
• Fast charging capability reduces charging time
• Wide input voltage range allows flexibility in power source selection
• Multiple charging modes accommodate different battery chemistries
• Comprehensive protection features ensure safe charging and operation

Disadvantages

• Limited availability in certain regions
• Relatively higher cost compared to some alternative models

Working Principles

The LTC4066EPF#PBF operates by regulating the charging current and voltage according to the selected charging mode and the battery's requirements. It utilizes a switching regulator to efficiently convert the input voltage into the desired charging voltage. The IC continuously monitors the battery's voltage, temperature, and charging status to ensure safe and optimal charging.

Application Field Plans

The LTC4066EPF#PBF is widely used in various portable electronic devices that require battery charging capabilities. Some of the common application fields include: - Smartphones and tablets - Portable media players - Wireless headphones - GPS devices - Portable gaming consoles - Wearable devices

Alternative Models

1. LTC4065EPF#PBF: Similar to LTC4066EPF#PBF with additional power path management feature.
2. MAX1555EZK+T: Low-cost alternative with similar charging capabilities but limited input voltage range.
3. BQ24075RGTR: Integrated charger IC with built-in USB OTG support.

These alternative models offer similar functionalities and can be considered based on specific requirements and cost considerations.

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