LTC4015IUHF

Product Overview

Category

LTC4015IUHF belongs to the category of integrated circuits (ICs) used for battery charging applications.

Use

This product is specifically designed for charging and managing lithium-ion batteries.

Characteristics

• High efficiency charging
• Wide input voltage range
• Programmable charge current
• Integrated power path management
• Temperature monitoring and protection
• Fault detection and reporting

Package

LTC4015IUHF is available in a 38-lead QFN (Quad Flat No-Lead) package.

Essence

The essence of LTC4015IUHF lies in its ability to efficiently charge and manage lithium-ion batteries, ensuring optimal performance and safety.

Packaging/Quantity

This product is typically sold in reels containing a specified quantity of units. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4V to 60V
• Charge Current Range: Up to 4A
• Operating Temperature Range: -40°C to 125°C
• Battery Chemistry Compatibility: Lithium-Ion (Li-Ion)
• Charging Method: Constant Current/Constant Voltage (CC/CV)

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. VBAT: Battery voltage pin
4. TS: Temperature sense pin
5. PROG: Charge current programming pin
6. STAT: Status output pin
7. INTVCC: Internal supply voltage pin
8. SDA/SCL: I2C communication pins
9. ILIM: Input current limit pin
10. BATFET: Battery FET control pin
11. TIMER: Timer control pin
12. VREF: Reference voltage pin
13. VOUT: Output voltage pin
14. ITH: Current sense threshold pin
15. ISET: Current sense programming pin
16. VSENSE: Voltage sense pin
17. SRN: Serial reference number pin 18-38. NC: No connection pins

Functional Features

1. High Efficiency Charging: LTC4015IUHF utilizes advanced charging algorithms to maximize the efficiency of the charging process, minimizing energy loss.

2. Wide Input Voltage Range: The product supports a wide range of input voltages, allowing it to be used in various applications with different power sources.

3. Programmable Charge Current: The charge current can be easily programmed using the PROG pin, providing flexibility to adapt to different battery capacities and charging requirements.

4. Integrated Power Path Management: LTC4015IUHF features integrated power path management, enabling simultaneous charging and discharging of the battery, even when the input power source is unavailable.

5. Temperature Monitoring and Protection: The product incorporates temperature sensing capabilities to monitor the battery's temperature during charging. It provides protection mechanisms to prevent overheating and ensure safe operation.

6. Fault Detection and Reporting: LTC4015IUHF includes fault detection circuitry that identifies and reports any abnormal conditions or faults during the charging process, enhancing safety and reliability.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Wide input voltage compatibility
• Flexible charge current programming
• Integrated power path management
• Temperature monitoring and protection
• Fault detection and reporting for enhanced safety

Disadvantages

• Limited to lithium-ion battery charging applications
• Requires careful consideration of thermal management due to high power dissipation

Working Principles

LTC4015IUHF operates based on the constant current/constant voltage (CC/CV) charging method commonly used for lithium-ion batteries. It regulates the charging current and voltage according to the battery's state of charge, ensuring optimal charging performance while preventing overcharging or undercharging.

The integrated power path management allows the battery to be charged and discharged simultaneously, providing uninterrupted power supply during charging. The temperature monitoring and protection features safeguard against overheating, which can degrade battery performance and pose safety risks.

Detailed Application Field Plans

LTC4015IUHF finds applications in various fields that require efficient and reliable lithium-ion battery charging. Some potential application areas include: - Portable electronic devices - Electric vehicles - Energy storage systems - Industrial equipment - Medical devices

Detailed and Complete Alternative Models

1. LTC4015EUHF: Similar to LTC4015IUHF but available in a different package.
2. LTC4015CUHF: Lower-cost variant with slightly reduced features.
3. LTC4015XUHF: Extended temperature range version for harsh environments.

These alternative models offer similar functionality and compatibility with lithium-ion batteries, providing options to suit specific requirements and constraints.

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