LT1965EDD#TRPBF

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, High PSRR
• Package: DFN-8
• Essence: Linear Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 1.8V to 20V
• Output Voltage Range: 1.21V to 19.5V
• Dropout Voltage: 300mV at 1A Load Current
• Maximum Output Current: 1.1A
• Line Regulation: ±0.02% (Typical)
• Load Regulation: ±0.1% (Typical)
• Quiescent Current: 40µA (Typical)
• PSRR: 70dB at 1kHz
• Thermal Shutdown Protection: Yes

Detailed Pin Configuration

The LT1965EDD#TRPBF has a DFN-8 package with the following pin configuration:

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| | | VOUT | |___________| | | | VIN | |___________| | | | GND | |___________| | | | NC | |___________| | | | FB | |___________| | | | NC | |___________| | | | EN | |___________| | | | NC | |___________| ```

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• High power supply rejection ratio (PSRR) ensures stable output voltage despite variations in the input voltage.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Wide input voltage range enables compatibility with various power sources.
• Low quiescent current minimizes power consumption during standby or idle mode.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - High PSRR provides stable output voltage. - Thermal shutdown protection prevents damage. - Wide input voltage range allows for versatile applications. - Low quiescent current reduces power consumption.

Disadvantages: - Limited maximum output current of 1.1A may not be suitable for high-power applications. - DFN-8 package may require specialized equipment for soldering.

Working Principles

The LT1965EDD#TRPBF is a linear regulator that maintains a constant output voltage despite variations in the input voltage. It achieves this by using a pass transistor to regulate the voltage drop across it. The dropout voltage, which is the minimum voltage difference between the input and output required for proper regulation, is kept low to ensure efficient operation.

The device also features high PSRR, which means it can reject fluctuations in the input voltage, resulting in a stable output voltage. Additionally, thermal shutdown protection safeguards the regulator from overheating, preventing potential damage.

Detailed Application Field Plans

The LT1965EDD#TRPBF is commonly used in various applications where a stable and regulated voltage supply is required. Some typical application fields include:

1. Battery-Powered Devices: The low dropout voltage and low quiescent current make it suitable for battery-powered devices such as portable electronics, IoT devices, and wearables.

2. Automotive Electronics: With its wide input voltage range and thermal shutdown protection, the LT1965EDD#TRPBF can be used in automotive applications like infotainment systems, lighting controls, and engine management systems.

3. Industrial Equipment: The regulator's ability to handle a wide input voltage range and provide stable output voltage makes it suitable for industrial equipment such as control systems, motor drives, and power supplies.

4. Communication Systems: The high PSRR of the LT1965EDD#TRPBF ensures a clean and stable power supply for communication systems like routers, switches, and base stations.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and package options.
2. ADP3339: Offers higher maximum output current and lower dropout voltage.
3. TPS7A4700: Provides ultra-low noise performance in addition to voltage regulation.
4. LT3080: Adjustable linear regulator with higher maximum output current capability.

These alternative models offer different features and specifications, allowing users to choose the most suitable option based on their specific requirements.

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