LTC4162EUFD-L40M#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger
• Characteristics: High Efficiency, Wide Input Voltage Range, Programmable Charging Parameters
• Package: 4x5mm QFN-28
• Essence: Power Management IC for Battery Charging Applications
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 35V
• Charge Current Range: Up to 3A
• Termination Current: Programmable
• Float Voltage Range: 2.5V to 14.4V
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Battery Chemistry Support: Li-Ion, Li-Polymer, LiFePO4

Pin Configuration

The LTC4162EUFD-L40M#TRPBF has a total of 28 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. GND: Ground
3. VCC: Supply Voltage
4. ISET: Charge Current Programming
5. TS: Thermistor Input
6. PROG: Programming Pin
7. STAT: Status Output
8. INTVCC: Internal Supply Voltage
9. BAT: Battery Connection
10. ILIM: Input Current Limit Programming
11. SDA: I2C Data Input/Output
12. SCL: I2C Clock Input
13. PGOOD: Power Good Indicator
14. VREF: Reference Voltage Output
15. VBAT: Battery Voltage Sense
16. VOUT: Output Voltage
17. VFB: Feedback Voltage Input
18. COMP: Compensation Node
19. SS: Soft-Start Pin
20. FREQ: Frequency Programming
21. BST: Boost Converter Output
22. SW: Switching Node
23. PGND: Power Ground
24. VCC2: Secondary Supply Voltage
25. ITH: Current Sense Threshold
26. IIN: Input Current Sense
27. VSENSE: Voltage Sense
28. VOUT2: Secondary Output Voltage

Functional Features

• High Efficiency Charging: The LTC4162EUFD-L40M#TRPBF offers high charging efficiency, ensuring maximum power transfer to the battery.
• Wide Input Voltage Range: It supports a wide input voltage range from 4.5V to 35V, making it suitable for various power sources.
• Programmable Charging Parameters: Users can program the charge current, termination current, and float voltage according to their specific requirements.
• Battery Chemistry Support: It is compatible with multiple battery chemistries, including Li-Ion, Li-Polymer, and LiFePO4.
• Integrated Protection Features: The IC incorporates various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.

Advantages and Disadvantages

Advantages: - High charging efficiency - Wide input voltage range - Programmable charging parameters - Compatibility with multiple battery chemistries - Integrated protection features

Disadvantages: - Limited to battery charging applications only - Requires programming for optimal performance

Working Principles

The LTC4162EUFD-L40M#TRPBF operates as a switch-mode battery charger. It utilizes a high-efficiency synchronous buck converter to regulate the charging process. The input voltage is converted to a lower voltage level suitable for charging the battery. The charge current, termination current, and float voltage can be programmed through the I2C interface or by using external resistors.

The IC continuously monitors the battery voltage, current, and temperature to ensure safe and efficient charging. It incorporates various protection features to prevent overcharging, overcurrent, and overheating of the battery.

Detailed Application Field Plans

The LTC4162EUFD-L40M#TRPBF is widely used in portable electronic devices, such as smartphones, tablets, and wearable devices. It is also suitable for industrial applications that require battery charging, such as wireless sensors, IoT devices, and handheld instruments.

Detailed and Complete Alternative Models

• LTC4162EUFD-L40M#PBF: Same specifications and features as LTC4162EUFD-L40M#TRPBF, but available in a 28-lead plastic TSSOP package.
• LTC4162EUFD-L40M#MPBF: Same specifications and features as LTC4162EUFD-L40M#TRPBF, but available in a 28-lead exposed pad plastic QFN package.

These alternative models provide flexibility in choosing the appropriate package type based on the specific application requirements.

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