KA7924

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Fixed output voltage of -24V - Low dropout voltage - High ripple rejection ratio - Short circuit protection - Thermal overload protection

Package: TO-220

Essence: The KA7924 is a voltage regulator IC that provides a fixed output voltage of -24V. It is commonly used in electronic circuits to regulate and stabilize the voltage supply.

Packaging/Quantity: The KA7924 is typically sold in packs of 10 or more.

Specifications

Input Voltage Range: -35V to -10V
Output Voltage: -24V
Output Current: Up to 1A
Dropout Voltage: 2V (maximum)
Ripple Rejection Ratio: 70dB (minimum)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The KA7924 has three pins:

Input Pin (Vin): This pin is connected to the input voltage source.
Ground Pin (GND): This pin is connected to the ground or common reference point.
Output Pin (Vout): This pin provides the regulated -24V output voltage.

Functional Features

Fixed Output Voltage: The KA7924 provides a stable -24V output voltage regardless of variations in the input voltage.
Low Dropout Voltage: The regulator maintains a low voltage drop between the input and output, ensuring efficient power conversion.
High Ripple Rejection Ratio: The KA7924 effectively filters out high-frequency noise and ripple present in the input voltage.
Short Circuit Protection: In case of a short circuit, the KA7924 automatically shuts down to protect itself and the connected circuitry.
Thermal Overload Protection: The IC incorporates thermal protection to prevent damage due to excessive heat.

Advantages and Disadvantages

Advantages: - Provides a stable -24V output voltage - Low dropout voltage ensures efficient power conversion - High ripple rejection ratio filters out noise and ripple - Offers short circuit and thermal overload protection

Disadvantages: - Fixed output voltage limits flexibility in certain applications - Limited output current capability (up to 1A)

Working Principles

The KA7924 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 accordingly to maintain a constant -24V output.

Detailed Application Field Plans

The KA7924 finds applications in various electronic circuits where a stable -24V voltage supply is required. Some common application areas include: - Power supply units - Audio amplifiers - Industrial control systems - Instrumentation equipment

Detailed and Complete Alternative Models

LM7924: Similar voltage regulator IC with -24V fixed output.
UA7924: Alternative IC with -24V fixed output voltage.
MC7924: Voltage regulator IC providing -24V output voltage.

These alternative models offer similar functionality and can be used as substitutes for the KA7924 in various applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van KA7924 in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of KA7924 in technical solutions:

Q: What is KA7924? A: KA7924 is a voltage regulator IC that provides a fixed output voltage of -24V.
Q: What is the input voltage range for KA7924? A: The input voltage range for KA7924 is typically between -35V to -40V.
Q: Can KA7924 be used in both AC and DC applications? A: Yes, KA7924 can be used in both AC and DC applications as long as the input voltage falls within the specified range.
Q: What is the maximum current KA7924 can handle? A: KA7924 can handle a maximum output current of 1A.
Q: Is KA7924 suitable for high-power applications? A: No, KA7924 is not suitable for high-power applications as it has a limited output current capacity.
Q: Can KA7924 be used to regulate positive voltages? A: No, KA7924 is specifically designed to regulate negative voltages only.
Q: What are some typical applications of KA7924? A: Some typical applications of KA7924 include audio amplifiers, power supplies, and industrial control systems.
Q: Does KA7924 require any external components for operation? A: Yes, KA7924 requires a few external components such as capacitors and resistors for proper operation and stability.
Q: What is the thermal resistance of KA7924? A: The thermal resistance of KA7924 is typically around 50°C/W, which determines its ability to dissipate heat.
Q: Can multiple KA7924 ICs be connected in parallel to increase the output current? A: No, it is not recommended to connect multiple KA7924 ICs in parallel as it can lead to stability issues and uneven load sharing.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements of KA7924.