LTC4013IUFD#PBF

Product Overview

Category

LTC4013IUFD#PBF belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging batteries in various electronic devices such as smartphones, tablets, laptops, and portable power banks.

Characteristics

• High efficiency: The LTC4013IUFD#PBF offers high charging efficiency, ensuring maximum power transfer to the battery.
• Fast charging: It supports fast charging protocols, enabling quick replenishment of battery capacity.
• Wide input voltage range: The IC can operate with a wide range of input voltages, making it suitable for different charging scenarios.
• Multiple battery chemistries: It supports various battery chemistries like lithium-ion, lithium-polymer, and nickel-based batteries.
• Temperature monitoring: The LTC4013IUFD#PBF incorporates temperature monitoring features to prevent overheating during charging.

Package

The LTC4013IUFD#PBF comes in a small form factor package, typically a 28-pin QFN (Quad Flat No-Lead) package. This package offers good thermal dissipation properties and ease of integration into circuit boards.

Essence

The essence of LTC4013IUFD#PBF lies in its ability to efficiently and safely charge batteries, providing a reliable power source for electronic devices.

Packaging/Quantity

This product is usually sold in reels or trays, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4V - 36V
• Charging Current: Up to 4A
• Battery Chemistry Support: Li-Ion, Li-Polymer, NiMH, NiCd
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Package Type: 28-pin QFN

Detailed Pin Configuration

The LTC4013IUFD#PBF has a total of 28 pins. The pin configuration is as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VBAT: Battery voltage pin
4. PROG: Programming pin for setting charging parameters
5. TS: Temperature sense pin
6. STAT: Status output pin
7. INTVCC: Internal voltage supply pin
8. ISET: Current limit programming pin
9. TIMER: Timer programming pin
10. SCL: Serial clock input pin
11. SDA: Serial data input/output pin
12. FLT: Fault indicator output pin
13. BAT: Battery temperature sense pin
14. ILIM: Current limit programming pin
15. VREF: Reference voltage output pin
16. VCC: Supply voltage pin
17. PGND: Power ground pin
18. VFB: Feedback voltage input pin
19. COMP: Compensation pin
20. FB: Feedback pin
21. SS: Soft-start pin
22. BST: Boost pin
23. SW: Switching node pin
24. LX: Inductor connection pin
25. VOUT: Output voltage pin
26. VSENSE: Sense voltage input pin
27. ADJ: Adjustable pin
28. AGND: Analog ground pin

Functional Features

• Constant current/constant voltage (CC/CV) charging algorithm
• Programmable charging parameters through the PROG pin
• Thermal regulation to prevent overheating
• Automatic recharge feature after battery discharge
• Charge termination based on battery voltage and current thresholds
• Reverse battery protection
• LED status indicators for charging progress

Advantages and Disadvantages

Advantages

• High charging efficiency ensures optimal power transfer
• Wide input voltage range allows compatibility with various power sources
• Supports multiple battery chemistries, enhancing versatility
• Fast charging capability reduces charging time
• Temperature monitoring prevents overheating and ensures safety

Disadvantages

• Limited availability of alternative models from different manufacturers
• Relatively higher cost compared to standard battery charging ICs

Working Principles

The LTC4013IUFD#PBF operates based on a CC/CV charging algorithm. It regulates the charging current during the constant current phase until the battery voltage reaches a predetermined threshold. Then, it switches to the constant voltage phase, maintaining a steady voltage while reducing the charging current gradually. The IC continuously monitors the battery temperature and adjusts the charging parameters accordingly to prevent overheating.

Detailed Application Field Plans

The LTC4013IUFD#PBF finds applications in various fields, including: 1. Consumer electronics: Charging batteries in smartphones, tablets, laptops, and portable power banks. 2. Industrial equipment: Powering battery-operated devices used in industrial settings. 3. Automotive: Charging batteries in electric vehicles and hybrid cars. 4. Renewable energy systems: Charging batteries in