L78L15ABZ

Product Overview

Category: Voltage Regulator
Use: To regulate and stabilize the output voltage in electronic circuits
Characteristics:
- Fixed output voltage of 15V
- Low dropout voltage
- High ripple rejection ratio
- Thermal overload protection
Package: TO-92 (Through-Hole)
Essence: Linear voltage regulator
Packaging/Quantity: Available in reels or tubes, quantity varies depending on supplier

Specifications

Input Voltage Range: 17V to 35V
Output Voltage: 15V ±5%
Output Current: Up to 100mA
Dropout Voltage: 2V (max)
Ripple Rejection Ratio: 60dB (typ)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L78L15ABZ voltage regulator has three pins:

Input (VIN): Connects to the input voltage source.
Ground (GND): Connected to the ground reference of the circuit.
Output (VOUT): Provides the regulated output voltage.

Functional Features

Regulates and stabilizes the output voltage within a specified range.
Protects against thermal overload, preventing damage to the device.
Provides a low dropout voltage, ensuring efficient power conversion.
Offers high ripple rejection ratio, reducing noise in the output signal.

Advantages and Disadvantages

Advantages: - Simple and easy to use. - Cost-effective solution for voltage regulation. - Suitable for low-power applications. - Wide operating temperature range.

Disadvantages: - Limited output current capability. - Requires external capacitors for stability. - Not suitable for high-power applications.

Working Principles

The L78L15ABZ is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The L78L15ABZ is commonly used in various electronic applications, including:

Power supply circuits for microcontrollers and other low-power digital devices.
Battery-powered systems requiring a regulated 15V supply.
Audio amplifiers and preamplifiers.
Industrial control systems.
Automotive electronics.

Detailed and Complete Alternative Models

LM7815: Similar specifications and pin configuration, available in different packages.
MC78L15: Equivalent voltage regulator with similar characteristics.
UA7815: Another alternative with comparable performance.

These alternative models can be used as substitutes for the L78L15ABZ depending on availability and specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L78L15ABZ v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L78L15ABZ in technical solutions:

Q: What is L78L15ABZ? A: L78L15ABZ is a voltage regulator IC that provides a fixed output voltage of +15V.
Q: What is the input voltage range for L78L15ABZ? A: The input voltage range for L78L15ABZ is typically between 17V and 35V.
Q: What is the maximum output current of L78L15ABZ? A: The maximum output current of L78L15ABZ is 100mA.
Q: Can L78L15ABZ handle higher input voltages than its rated output voltage? A: No, L78L15ABZ is designed to regulate the output voltage at +15V, and exceeding the input voltage beyond its rating can damage the IC.
Q: Is L78L15ABZ suitable for low-power applications? A: Yes, L78L15ABZ is commonly used in low-power applications where a regulated +15V supply is required.
Q: Does L78L15ABZ require any external components for operation? A: Yes, L78L15ABZ requires input and output capacitors for stability and filtering purposes.
Q: Can L78L15ABZ be used in automotive applications? A: Yes, L78L15ABZ is often used in automotive applications where a regulated +15V supply is needed.
Q: What is the thermal resistance of L78L15ABZ? A: The thermal resistance of L78L15ABZ is typically around 50°C/W, which determines its ability to dissipate heat.
Q: Can L78L15ABZ be used in battery-powered devices? A: Yes, L78L15ABZ can be used in battery-powered devices as long as the input voltage is within its specified range.
Q: Are there any alternatives to L78L15ABZ for +15V voltage regulation? A: Yes, there are other voltage regulator ICs available in the market that can provide a regulated +15V output, such as LM7815 or UA7815.

Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.