L79L12ACD13TR

Basic Information Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: Low Dropout, Fixed Output Voltage
Package: TO-252 (DPAK)
Essence: Linear Voltage Regulator
Packaging/Quantity: Tape and Reel / 2500 pieces per reel

Specifications

Input Voltage Range: -35V to -16V
Output Voltage: -12V
Output Current: 100mA
Dropout Voltage: 1.2V (typical)
Line Regulation: 0.04% (typical)
Load Regulation: 0.2% (typical)
Quiescent Current: 5mA (typical)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L79L12ACD13TR has three pins: 1. Pin 1: Input Voltage (VIN) 2. Pin 2: Ground (GND) 3. Pin 3: Output Voltage (VOUT)

Functional Features

Low dropout voltage ensures stable output even with low input voltage.
Fixed -12V output voltage provides a regulated power supply.
Excellent line and load regulation for precise voltage control.
Internal thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows operation with low input voltages. - Fixed output voltage simplifies circuit design. - Compact TO-252 package offers easy integration into various applications.

Disadvantages: - Limited output current of 100mA may not be suitable for high-power applications. - Negative output voltage restricts compatibility with certain systems.

Working Principles

The L79L12ACD13TR is a linear voltage regulator that maintains a fixed -12V output voltage regardless of changes in the input voltage. It utilizes a pass transistor to regulate the output voltage by adjusting the current flow through it. The regulator operates in a linear mode, dissipating excess power as heat to maintain the desired output voltage.

Detailed Application Field Plans

The L79L12ACD13TR is commonly used in various electronic devices and systems that require a stable -12V power supply. Some typical applications include: - Industrial control systems - Automotive electronics - Audio amplifiers - Instrumentation equipment

Detailed and Complete Alternative Models

LM7912: Similar fixed -12V voltage regulator with different package options.
MC79L12: Alternative linear voltage regulator with -12V output voltage.
LT1963A-12: Low dropout linear regulator with adjustable output voltage.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Sure! Here are 10 common questions and answers related to the application of L79L12ACD13TR in technical solutions:

Q: What is L79L12ACD13TR? A: L79L12ACD13TR is a voltage regulator IC that provides a fixed output voltage of -12V.
Q: What are the typical applications of L79L12ACD13TR? A: L79L12ACD13TR is commonly used in electronic circuits where a stable -12V power supply is required, such as in audio amplifiers or industrial control systems.
Q: How does L79L12ACD13TR regulate the output voltage? A: L79L12ACD13TR uses an internal reference voltage and feedback mechanism to maintain a constant -12V output regardless of input voltage variations.
Q: What is the maximum input voltage that L79L12ACD13TR can handle? A: The maximum input voltage for L79L12ACD13TR is typically around -35V.
Q: Can L79L12ACD13TR handle high current loads? A: No, L79L12ACD13TR is designed for low to moderate current applications. It has a maximum output current rating of around 100mA.
Q: Is L79L12ACD13TR polarity sensitive? A: Yes, L79L12ACD13TR is a negative voltage regulator, so it requires proper polarity connection with the input and output terminals.
Q: Does L79L12ACD13TR require any external components for operation? A: Yes, L79L12ACD13TR typically requires input and output capacitors for stability and noise filtering.
Q: Can L79L12ACD13TR handle temperature variations? A: Yes, L79L12ACD13TR has a wide operating temperature range, typically from -40°C to +125°C.
Q: Is L79L12ACD13TR available in different package types? A: Yes, L79L12ACD13TR is available in various package options, such as TO-92, SOIC, or SOT-89.
Q: Are there any alternatives to L79L12ACD13TR for -12V voltage regulation? A: Yes, there are other voltage regulator ICs available in the market that can provide a fixed -12V output, such as LM7912 or LT1963A-12.