STMicroelectronics
Obrázek může být reprezentace.
Viz Specifikace pro podrobnosti o produktu.
L79L12ACZ-AP
Zobrazit detail DataSheets

L79L12ACZ-AP

Product Overview

Category

The L79L12ACZ-AP belongs to the category of voltage regulators.

Use

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

Characteristics

  • Voltage regulation: The L79L12ACZ-AP provides a regulated output voltage.
  • Low dropout voltage: It operates efficiently even when the input voltage is close to the output voltage.
  • Thermal overload protection: The device includes built-in protection against excessive heat.
  • Short-circuit protection: It safeguards the circuit from damage in case of a short circuit.

Package

The L79L12ACZ-AP comes in a compact TO-92 package.

Essence

The essence of this product lies in its ability to provide stable and regulated voltage output, ensuring the proper functioning of electronic devices.

Packaging/Quantity

The L79L12ACZ-AP is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

  • Input voltage range: 14V to 35V
  • Output voltage: -12V
  • Output current: 100mA
  • Dropout voltage: 2V (maximum)
  • Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

The L79L12ACZ-AP has three pins:

  1. Input pin (VIN): Connects to the input voltage source.
  2. Ground pin (GND): Connected to the ground reference.
  3. Output pin (VOUT): Provides the regulated -12V output voltage.

Functional Features

  • Voltage regulation: The L79L12ACZ-AP maintains a constant -12V output voltage regardless of variations in the input voltage.
  • Low dropout voltage: It can operate efficiently even when the input voltage is only slightly higher than the desired output voltage.
  • Overload and short-circuit protection: The device includes built-in protection mechanisms to prevent damage due to excessive heat or short circuits.

Advantages and Disadvantages

Advantages

  • Provides stable and regulated voltage output.
  • Compact package size allows for easy integration into various electronic circuits.
  • Offers thermal overload and short-circuit protection, enhancing circuit reliability.

Disadvantages

  • Limited output current capacity (100mA).
  • Requires an input voltage within a specific range (14V to 35V).

Working Principles

The L79L12ACZ-AP is a linear voltage regulator that utilizes 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 constant -12V output.

Detailed Application Field Plans

The L79L12ACZ-AP finds applications in various electronic systems, including:

  1. Power supply units: It can be used to regulate the voltage supplied to different components of a power supply unit.
  2. Audio amplifiers: The L79L12ACZ-AP ensures a stable voltage supply to audio amplifier circuits, improving sound quality.
  3. Industrial control systems: It is suitable for regulating voltages in industrial control systems, ensuring reliable operation of sensors and actuators.

Detailed and Complete Alternative Models

  1. LM7912: A similar voltage regulator with a -12V output and higher output current capacity.
  2. MC79L12: Another -12V voltage regulator with comparable specifications.
  3. LT1086: A versatile adjustable voltage regulator that can be configured for -12V output.

(Note: This list is not exhaustive and other alternative models may exist.)

Word count: 408 words

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L79L12ACZ-AP v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L79L12ACZ-AP in technical solutions:

  1. Q: What is L79L12ACZ-AP? A: L79L12ACZ-AP is a voltage regulator IC that provides a fixed output voltage of -12V.

  2. Q: What is the input voltage range for L79L12ACZ-AP? A: The input voltage range for L79L12ACZ-AP is typically between -35V and -15V.

  3. Q: What is the maximum output current of L79L12ACZ-AP? A: The maximum output current of L79L12ACZ-AP is 100mA.

  4. Q: Can L79L12ACZ-AP be used in both AC and DC applications? A: Yes, L79L12ACZ-AP can be used in both AC and DC applications.

  5. Q: Is L79L12ACZ-AP suitable for automotive applications? A: No, L79L12ACZ-AP is not suitable for automotive applications as it operates within a limited temperature range.

  6. Q: Can L79L12ACZ-AP be used in high-power applications? A: No, L79L12ACZ-AP is designed for low-power applications and may not be suitable for high-power requirements.

  7. Q: Does L79L12ACZ-AP require any external components for operation? A: Yes, L79L12ACZ-AP requires input and output capacitors for stability and filtering.

  8. Q: What is the typical dropout voltage of L79L12ACZ-AP? A: The typical dropout voltage of L79L12ACZ-AP is around 2V.

  9. Q: Can L79L12ACZ-AP be used in battery-powered applications? A: Yes, L79L12ACZ-AP can be used in battery-powered applications as long as the input voltage range is within the specified limits.

  10. Q: Is L79L12ACZ-AP available in different package options? A: Yes, L79L12ACZ-AP is available in various package options such as TO-92, SO-8, and DPAK.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for L79L12ACZ-AP.