LTC4121EUD-4.2#PBF

Product Overview

Category

The LTC4121EUD-4.2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for wireless power transfer applications, enabling efficient charging of batteries in various devices wirelessly.

Characteristics

• High efficiency power conversion
• Wide input voltage range
• Programmable output voltage
• Integrated power management features
• Compact and versatile design

Package

The LTC4121EUD-4.2#PBF comes in a small 12-pin DFN (Dual Flat No-Lead) package, which ensures easy integration into different circuit designs.

Essence

The essence of LTC4121EUD-4.2#PBF lies in its ability to provide wireless power transfer capabilities, allowing for convenient and efficient charging of batteries without the need for physical connections.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 4.2V (programmable)
• Maximum Output Current: 400mA
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 80%
• Control Interface: I2C

Detailed Pin Configuration

1. VIN: Input voltage
2. GND: Ground reference
3. VOUT: Output voltage
4. SDA: I2C data line
5. SCL: I2C clock line
6. EN: Enable pin
7. FLT: Fault indicator
8. PG: Power good indicator
9. NC: No connection
10. NC: No connection
11. NC: No connection
12. NC: No connection

Functional Features

• Wireless power transfer capability
• Programmable output voltage
• Integrated fault detection and protection
• Power good indicator for status monitoring
• Low quiescent current in shutdown mode
• I2C interface for control and configuration

Advantages and Disadvantages

Advantages

• Enables wireless charging, eliminating the need for physical connections
• High efficiency power conversion minimizes energy loss
• Compact package allows for easy integration into various designs
• Programmable output voltage provides flexibility for different battery types

Disadvantages

• Limited maximum output current (400mA)
• Requires an external coil for wireless power transfer
• Control and configuration through I2C may require additional circuitry

Working Principles

The LTC4121EUD-4.2#PBF operates based on the principles of resonant inductive coupling. It uses a combination of magnetic fields to transfer power wirelessly between a transmitter and receiver coil. The IC controls the power transfer process by regulating the frequency and amplitude of the transmitted signal.

When the input voltage is applied, the LTC4121EUD-4.2#PBF generates a high-frequency AC signal that is coupled to the transmitter coil. This signal induces a corresponding voltage in the receiver coil, which is rectified and regulated to provide the desired output voltage for charging the battery.

Detailed Application Field Plans

The LTC4121EUD-4.2#PBF finds applications in various fields where wireless charging is desired. Some potential application areas include:

1. Consumer Electronics: Smartphones, tablets, smartwatches, wireless earbuds, etc.
2. Medical Devices: Implantable medical devices, wearable health monitors, etc.
3. Automotive: Electric vehicles, wireless charging pads for electric cars, etc.
4. Industrial: Wireless sensors, remote monitoring devices, etc.

Detailed and Complete Alternative Models

1. LTC4120EUD-4.2#PBF: Similar to LTC4121EUD-4.2#PBF with minor differences in specifications.
2. LTC4123EUD-4.2#PBF: Offers additional features such as battery temperature monitoring.
3. LTC4125EUD-4.2#PBF: Higher maximum output current (up to 1A) for faster charging.

These alternative models provide similar wireless power transfer capabilities but may have variations in specifications and additional features.

In conclusion, the LTC4121EUD-4.2#PBF is a power management IC that enables wireless power transfer for efficient battery charging. Its compact design, programmable output voltage, and integrated features make it suitable for various applications in consumer electronics, medical devices, automotive, and industrial sectors. While it has limitations in terms of maximum output current and external coil requirement, it offers the advantages of wireless charging and high efficiency power conversion.