LM217MDT-TR

Product Overview

Category

LM217MDT-TR belongs to the category of voltage regulators.

Use

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

Characteristics

• LM217MDT-TR is a three-terminal adjustable positive voltage regulator.
• It can provide output voltages ranging from 1.2V to 37V.
• The device is capable of supplying currents up to 1.5A.
• It operates with a wide input voltage range, typically from 3V to 40V.
• LM217MDT-TR exhibits low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• It offers excellent line and load regulation characteristics.
• This voltage regulator has built-in thermal overload protection and short-circuit current limiting features.

Package and Quantity

LM217MDT-TR is available in a TO-220 package. It is commonly sold in reels or tubes containing a specified quantity, typically around 1000 units per reel.

Specifications

• Output Voltage Range: 1.2V to 37V
• Output Current: Up to 1.5A
• Input Voltage Range: 3V to 40V
• Dropout Voltage: Typically 1.2V at 1A Load
• Line Regulation: Typically 0.01%/V
• Load Regulation: Typically 0.1%
• Thermal Shutdown Protection: Yes
• Short-Circuit Current Limiting: Yes

Pin Configuration

The LM217MDT-TR package consists of three pins: 1. IN (Input): This pin is connected to the input voltage source. 2. OUT (Output): The regulated output voltage is obtained from this pin. 3. ADJ (Adjust): This pin allows for adjusting the output voltage using an external resistor.

Functional Features

• LM217MDT-TR provides a stable and regulated output voltage, regardless of input voltage fluctuations.
• It offers adjustable output voltage, allowing for customization based on specific requirements.
• The device exhibits low dropout voltage, ensuring efficient operation even with small voltage differentials.
• Built-in thermal overload protection prevents damage due to excessive heat.
• Short-circuit current limiting protects the regulator and connected components from damage in case of a short circuit.

Advantages

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility in various electronic circuits.
• Low dropout voltage ensures efficient regulation even with low input-output differentials.
• Excellent line and load regulation characteristics ensure stable performance under varying conditions.
• Thermal overload protection and short-circuit current limiting enhance reliability and protect the device.

Disadvantages

• LM217MDT-TR may require additional external components, such as capacitors, for optimal performance.
• The device may generate heat during operation, requiring proper heat dissipation measures.

Working Principles

LM217MDT-TR operates based on the principle of linear voltage regulation. It uses a series pass transistor to regulate the output voltage. The internal reference voltage is compared to a fraction of the output voltage using an error amplifier. Any difference between the two voltages is amplified and used to control the series pass transistor, adjusting its resistance to maintain the desired output voltage.

Application Field Plans

LM217MDT-TR finds extensive use in various electronic applications, including: 1. Power supply circuits: It can be employed to provide regulated voltage to microcontrollers, sensors, and other components. 2. Battery charging circuits: LM217MDT-TR can be utilized to regulate the charging voltage for batteries. 3. Audio amplifiers: It can be used to stabilize the power supply voltage for audio amplification circuits. 4. LED drivers: The voltage regulator ensures a stable voltage supply for LED lighting applications.

Alternative Models

Several alternative models with similar functionality to LM217MDT-TR are available in the market. Some notable alternatives include: - LM317T - LM1117-ADJ - LT1083CP

These models offer comparable features and can be used as substitutes based on specific requirements.

In conclusion, LM217MDT-TR is a versatile voltage regulator that provides stable and adjustable output voltage. Its wide input voltage range, low dropout voltage, and excellent regulation characteristics make it suitable for various electronic applications. However, proper consideration should be given to external components and heat dissipation requirements.