KA78L05AIMTF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Fixed Output Voltage: 5V - Maximum Input Voltage: 35V - Maximum Output Current: 100mA - Low Dropout Voltage: 1.7V (typical) - Thermal Shutdown Protection - Short Circuit Protection - Small Package Size

Package: SOT-89

Essence: The KA78L05AIMTF is a voltage regulator IC that provides a fixed output voltage of 5V. It is commonly used to regulate and stabilize the voltage in electronic circuits.

Packaging/Quantity: The KA78L05AIMTF is available in a SOT-89 package, which is a small surface-mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: Up to 35V
• Output Voltage: 5V (±4% tolerance)
• Output Current: Up to 100mA
• Dropout Voltage: 1.7V (typical)
• Quiescent Current: 4mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The KA78L05AIMTF 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 5V output voltage.

Functional Features

• Voltage Regulation: The KA78L05AIMTF regulates the input voltage to a stable 5V output voltage.
• Thermal Shutdown Protection: The IC has built-in thermal shutdown protection, which prevents it from overheating.
• Short Circuit Protection: It also features short circuit protection, safeguarding the IC and the connected circuitry.
• Low Dropout Voltage: The low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.

Advantages and Disadvantages

Advantages: - Simple and easy to use - Compact package size - Wide input voltage range - Built-in thermal and short circuit protection

Disadvantages: - Limited output current capacity (up to 100mA) - Fixed output voltage may not be suitable for all applications

Working Principles

The KA78L05AIMTF is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage (5V) with the feedback voltage from the output and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The KA78L05AIMTF can be used in various electronic circuits where a stable 5V voltage supply is required. Some common application areas include:

1. Microcontrollers: Providing a regulated power supply to microcontrollers and other digital ICs.
2. Sensor Circuits: Regulating the voltage for sensors used in temperature, pressure, or light sensing applications.
3. Audio Amplifiers: Supplying a stable voltage to audio amplifier circuits for improved performance.
4. Battery-Powered Devices: Regulating the voltage in battery-powered devices to ensure consistent operation.

Detailed and Complete Alternative Models

Some alternative models to the KA78L05AIMTF are:

1. LM7805: A popular voltage regulator IC with similar specifications and pin configuration.
2. MC78L05: Another commonly used voltage regulator IC with a fixed 5V output.
3. L78L05: A series of voltage regulators with different package options and output currents.

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

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