LTC4009CUF-2#TRPBF

Product Overview

Category

The LTC4009CUF-2#TRPBF belongs to the category of battery charger ICs (Integrated Circuits).

Use

This product is primarily used for charging lithium-ion batteries.

Characteristics

• High efficiency charging
• Wide input voltage range
• Programmable charge current
• Automatic recharge
• Thermal regulation

Package

The LTC4009CUF-2#TRPBF comes in a small 24-pin QFN (Quad Flat No-Lead) package.

Essence

The essence of this product lies in its ability to efficiently and safely charge lithium-ion batteries.

Packaging/Quantity

The LTC4009CUF-2#TRPBF is typically packaged in reels and is available in quantities suitable for both small-scale and large-scale production.

Specifications

• Input Voltage Range: 4.5V to 32V
• Charge Current Range: Up to 4A
• Charge Voltage Accuracy: ±0.5%
• Operating Temperature Range: -40°C to 85°C
• Battery Voltage Range: 2.5V to 26V

Detailed Pin Configuration

1. VCC: Power supply input
2. GND: Ground reference
3. PROG: Charge current programming pin
4. STAT: Status output pin
5. TS: Temperature sense input
6. BAT: Battery positive terminal
7. ISET: Charge current setting pin
8. ILIM: Input current limit pin
9. NTC: Negative temperature coefficient input
10. TIMER: Timer control pin
11. SCL: Serial clock input
12. SDA: Serial data input/output
13. INTVCC: Internal power supply output
14. FLT: Fault indicator output
15. CE: Chip enable input
16. VREF: Reference voltage output
17. REGN: Negative voltage regulator output
18. REGP: Positive voltage regulator output
19. ITHM: Thermal regulation pin
20. VBAT: Battery voltage sense input
21. VCC2: Secondary power supply input
22. GND2: Secondary ground reference
23. NC: No connection
24. NC: No connection

Functional Features

• High efficiency charging algorithm
• Programmable charge current for flexibility
• Automatic recharge feature for convenience
• Thermal regulation to prevent overheating
• Fault indicator for easy troubleshooting

Advantages and Disadvantages

Advantages

• High charging efficiency ensures faster charging times
• Wide input voltage range allows for versatile applications
• Programmable charge current enables customization based on battery requirements
• Automatic recharge feature eliminates the need for manual intervention
• Thermal regulation prevents damage due to overheating

Disadvantages

• Limited to lithium-ion battery charging only
• Requires careful consideration of input voltage range compatibility

Working Principles

The LTC4009CUF-2#TRPBF operates by utilizing a high-efficiency charging algorithm. It regulates the charge current and voltage to ensure optimal charging of lithium-ion batteries. The chip incorporates thermal regulation to prevent overheating, which can be detrimental to both the battery and the charger itself. Additionally, it features an automatic recharge function that initiates charging once the battery voltage drops below a certain threshold.

Detailed Application Field Plans

The LTC4009CUF-2#TRPBF is widely used in various applications that require efficient and reliable charging of lithium-ion batteries. Some common application fields include:

1. Portable electronic devices: This IC is commonly employed in smartphones, tablets, and other portable gadgets to provide fast and safe charging capabilities.

2. Electric vehicles: The LTC4009CUF-2#TRPBF is utilized in electric vehicle charging systems to efficiently charge the lithium-ion batteries used in these vehicles.

3. Energy storage systems: This product finds application in energy storage systems, such as solar power storage, where it ensures efficient charging and management of lithium-ion battery banks.

4. Industrial equipment: The LTC4009CUF-2#TRPBF is employed in various industrial equipment, such as handheld tools and machinery, to provide reliable and optimized charging for lithium-ion batteries.

Detailed and Complete Alternative Models

1. LTC4009CUF-1#TRPBF: Similar to LTC4009CUF-2#TRPBF, but with a different pin configuration.
2. LTC4009CUF-3#TRPBF: A higher current variant of the LTC4009CUF series, capable of charging at up to 6A.
3. LTC4009CUF-4#TRPBF: A lower current variant of the LTC4009CUF series, suitable for applications with lower charging requirements.

These alternative models offer similar functionality and characteristics but may differ in terms of pin configuration and maximum charge current