L78L08ABZTR

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: Low-dropout, 8V output voltage
Package: TO-92, SOT-89, DPAK, SO-8
Essence: Linear voltage regulator
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

Output Voltage: 8V
Input Voltage Range: 10.5V to 35V
Dropout Voltage: 2V
Maximum Output Current: 100mA
Quiescent Current: 4.5mA
Line Regulation: 50mV
Load Regulation: 100mV
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L78L08ABZTR has three pins:

Input (VIN): This pin is connected to the input voltage source.
Ground (GND): This pin is connected to the ground reference.
Output (VOUT): This pin provides the regulated 8V output voltage.

Functional Features

Low dropout voltage: The L78L08ABZTR has a low dropout voltage of 2V, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
Short-circuit protection: The IC incorporates short-circuit protection, preventing damage to the device in case of a short circuit on the output side.
Thermal overload protection: The L78L08ABZTR includes thermal overload protection, which shuts down the device if the temperature exceeds the safe operating range.
Wide input voltage range: It can accept input voltages ranging from 10.5V to 35V, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - Short-circuit and thermal overload protection enhance device reliability. - Wide input voltage range allows for versatile applications.

Disadvantages: - Limited maximum output current of 100mA may not be suitable for high-power applications. - Requires external capacitors for stability.

Working Principles

The L78L08ABZTR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor's resistance to maintain a stable output voltage. The dropout voltage is minimized by using a low-dropout (LDO) design, allowing the IC to regulate the output voltage even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The L78L08ABZTR is commonly used in various electronic devices and systems, including:

Power supplies: It can be used as a voltage regulator in power supply circuits to provide a stable 8V output voltage.
Automotive electronics: The IC finds applications in automotive systems, such as dashboard displays, audio systems, and lighting control modules.
Industrial control systems: It is suitable for regulating voltages in industrial control systems, ensuring stable operation of sensors, actuators, and other components.
Consumer electronics: The L78L08ABZTR can be utilized in devices like televisions, audio amplifiers, and home automation systems.

Detailed and Complete Alternative Models

LM7808: This is a popular alternative from Texas Instruments, offering similar specifications and functionality.
MC78L08: Manufactured by ON Semiconductor, it provides comparable performance and compatibility with the L78L08ABZTR.
UA78L08: A reliable alternative from Fairchild Semiconductor, featuring equivalent characteristics and pin configuration.

These alternative models can be considered based on availability, pricing, and specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L78L08ABZTR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L78L08ABZTR in technical solutions:

Q: What is L78L08ABZTR? A: L78L08ABZTR is a voltage regulator IC that provides a fixed output voltage of +8V.
Q: What is the input voltage range for L78L08ABZTR? A: The input voltage range for L78L08ABZTR is typically between 10V and 35V.
Q: What is the maximum output current of L78L08ABZTR? A: The maximum output current of L78L08ABZTR is 100mA.
Q: Can L78L08ABZTR handle higher input voltages than its output voltage? A: No, L78L08ABZTR is designed to regulate the output voltage and cannot handle input voltages higher than its output voltage.
Q: Is L78L08ABZTR suitable for battery-powered applications? A: Yes, L78L08ABZTR can be used in battery-powered applications as it has low quiescent current and low dropout voltage.
Q: Does L78L08ABZTR require any external components for operation? A: Yes, L78L08ABZTR requires input and output capacitors for stability and filtering purposes.
Q: Can L78L08ABZTR tolerate short circuits or overloads? A: No, L78L08ABZTR does not have built-in protection against short circuits or overloads. External protection circuitry may be required.
Q: Can L78L08ABZTR operate in high-temperature environments? A: Yes, L78L08ABZTR has a wide operating temperature range of -40°C to +125°C.
Q: Can multiple L78L08ABZTR regulators be connected in parallel for higher output current? A: Yes, multiple L78L08ABZTR regulators can be connected in parallel to increase the overall output current capacity.
Q: Are there any alternative voltage regulator options similar to L78L08ABZTR? A: Yes, there are other voltage regulator ICs available with different output voltages and specifications, such as L78L05ABZTR (5V) or L78L12ABZTR (12V).