LT1965IT-3.3#31PBF

Product Overview

Category

The LT1965IT-3.3#31PBF belongs to the category of voltage regulators.

Use

This product is commonly used in electronic circuits to regulate and stabilize voltage levels.

Characteristics

• Voltage regulation: The LT1965IT-3.3#31PBF provides a regulated output voltage of 3.3V.
• Package: This product comes in a TO-220 package, which allows for easy mounting on circuit boards.
• Essence: The essence of this voltage regulator is to maintain a stable output voltage despite fluctuations in the input voltage or load conditions.
• Packaging/Quantity: The LT1965IT-3.3#31PBF is typically sold in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage: 3.3V
• Maximum Output Current: 1.1A
• Dropout Voltage: 340mV at 1A Load
• Line Regulation: ±0.02%
• Load Regulation: ±0.1%
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1965IT-3.3#31PBF has three pins:

1. Vin (Pin 1): This pin is used to connect the input voltage to the regulator.
2. Vout (Pin 2): The regulated output voltage of 3.3V is obtained from this pin.
3. GND (Pin 3): This pin is connected to the ground reference of the circuit.

Functional Features

• Low Dropout Voltage: The LT1965IT-3.3#31PBF has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a quiescent current of only 40µA, this voltage regulator minimizes power consumption in standby or low-load conditions.
• Overcurrent and Thermal Protection: The LT1965IT-3.3#31PBF incorporates built-in protection features to prevent damage from excessive current or high temperatures.

Advantages and Disadvantages

Advantages

• High accuracy and stability in regulating output voltage.
• Low dropout voltage enables efficient regulation even with small input-output voltage differentials.
• Compact TO-220 package allows for easy integration into circuit designs.
• Built-in protection features enhance reliability and prevent damage.

Disadvantages

• Limited maximum output current of 1.1A may not be suitable for high-power applications.
• Higher cost compared to some other voltage regulators with similar specifications.

Working Principles

The LT1965IT-3.3#31PBF operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage of 3.3V. This is achieved by continuously monitoring the input voltage, load conditions, and temperature, and making necessary adjustments to the internal components.

Detailed Application Field Plans

The LT1965IT-3.3#31PBF finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable electronics - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

• LM1117-3.3: A popular alternative with similar specifications and performance characteristics.
• LT1763-3.3: Another alternative offering lower dropout voltage and higher maximum output current.
• LM317: A versatile adjustable voltage regulator that can be configured for 3.3V output.

These alternative models provide flexibility in choosing a voltage regulator based on specific requirements and constraints.

In conclusion, the LT1965IT-3.3#31PBF is a voltage regulator with a regulated output voltage of 3.3V. It offers high accuracy, low dropout voltage, and built-in protection features. While it may have limitations in terms of maximum output current and cost, it finds applications in various electronic devices and systems. Alternative models such as LM1117-3.3, LT1763-3.3, and LM317 provide additional options for voltage regulation needs.