ZR78L08GTA

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - Fixed output voltage of 8V - Maximum output current of 100mA - Thermal shutdown protection - Short circuit current limiting

Package: TO-92, SOT-89

Essence: The ZR78L08GTA is a voltage regulator IC that provides a fixed output voltage of 8V with low dropout voltage and high accuracy.

Packaging/Quantity: The ZR78L08GTA is available in TO-92 and SOT-89 packages. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 10V to 30V
• Output Voltage: 8V ±5%
• Dropout Voltage: 1.7V (typical)
• Output Current: Up to 100mA
• Quiescent Current: 5mA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The ZR78L08GTA 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 of 8V.

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• Thermal shutdown protection prevents the IC from overheating under excessive load or high ambient temperature conditions.
• Short circuit current limiting protects the IC and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - High accuracy and stability in providing a fixed output voltage of 8V. - Low dropout voltage allows for efficient regulation even with low input voltages. - Thermal shutdown protection ensures safe operation under extreme conditions. - Short circuit current limiting protects the IC and connected components.

Disadvantages: - Limited maximum output current of 100mA may not be suitable for high-power applications. - The TO-92 package may not be suitable for surface mount applications.

Working Principles

The ZR78L08GTA 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's resistance to maintain a constant output voltage of 8V. The dropout voltage is minimized by using a low dropout voltage regulator architecture.

Detailed Application Field Plans

The ZR78L08GTA can be used in various applications where a stable 8V power supply is required. Some common application fields include:

1. Consumer Electronics: Powering audio amplifiers, LED displays, and other low-power electronic devices.
2. Automotive Electronics: Providing regulated power for sensors, actuators, and control modules.
3. Industrial Control Systems: Powering microcontrollers, sensors, and communication modules.
4. Telecommunications: Regulating voltage for telecommunication equipment, such as routers and switches.
5. Medical Devices: Powering medical instruments and monitoring systems.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the ZR78L08GTA are:

1. LM7808: A popular voltage regulator IC with a fixed output voltage of 8V.
2. MC78L08: Another voltage regulator IC with a fixed output voltage of 8V.
3. L78L08: A low dropout voltage regulator IC with a fixed output voltage of 8V.

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

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