L78M15ABDT-TR

Product Overview

Category

L78M15ABDT-TR belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• Voltage Output: 15V
• Maximum Input Voltage: 35V
• Output Current: 500mA
• Package Type: DPAK (TO-252)
• Operating Temperature Range: -40°C to +125°C
• Dropout Voltage: 2V (typical)

Packaging/Quantity

L78M15ABDT-TR is available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Output Voltage: 15V ±4%
• Input Voltage Range: 17V to 35V
• Line Regulation: 50mV (typical)
• Load Regulation: 100mV (typical)
• Quiescent Current: 5mA (typical)
• Ripple Rejection: 60dB (typical)
• Short Circuit Protection: Yes
• Thermal Shutdown: Yes

Detailed Pin Configuration

The L78M15ABDT-TR has three pins:

1. Input (VIN): This pin is connected to the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (VOUT): This pin provides the regulated output voltage.

Functional Features

• Regulates the input voltage to a stable 15V output.
• Provides short circuit protection, preventing damage to the circuit in case of a short circuit.
• Includes thermal shutdown feature, which shuts down the regulator if the temperature exceeds the safe operating limit.
• Offers good ripple rejection, reducing noise in the output voltage.

Advantages and Disadvantages

Advantages

• Stable and reliable voltage regulation.
• Short circuit protection ensures safety.
• Wide operating temperature range allows for use in various environments.
• Compact DPAK package facilitates easy integration into circuits.

Disadvantages

• Dropout voltage of 2V may limit its use in low voltage applications.
• Limited output current of 500mA may not be sufficient for high-power applications.

Working Principles

The L78M15ABDT-TR is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage of 15V.

Detailed Application Field Plans

The L78M15ABDT-TR can be used in various electronic applications, including: 1. Power supply circuits for microcontrollers and other digital ICs. 2. Audio amplifiers and preamplifiers. 3. Battery charging circuits. 4. Industrial control systems. 5. Automotive electronics.

Detailed and Complete Alternative Models

Some alternative models to the L78M15ABDT-TR include: 1. LM7815: This is a popular alternative from Texas Instruments. 2. MC7815: Another alternative from ON Semiconductor. 3. UA7815: A widely used alternative from Fairchild Semiconductor. 4. NJM7815: An alternative from New Japan Radio Co., Ltd.

These alternatives offer similar specifications and functionality to the L78M15ABDT-TR and can be used as replacements depending on availability and specific requirements.

In conclusion, the L78M15ABDT-TR is a voltage regulator that provides stable 15V output voltage with short circuit protection and thermal shutdown features. Its compact package and wide operating temperature range make it suitable for various electronic applications. However, its limited output current and dropout voltage should be considered when selecting this regulator for specific projects.