KA3524

Name: KA3524 DC DC Switching Controllers
Brand: Onsemi
SKU: KA3524
Rating: 4.5 (10 reviews)
Author: Lisleapex

Voltage-mode PWM controller for power supply applications

5,103 有效庫存

KA3524

有效庫存5,103

Voltage-mode PWM controller for power supply applications

製造商零件號 # : KA3524
包裝/封裝: DIP-16
製造商: Onsemi
產品分類 : DC DC Switching Controllers

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KA3524 數據表

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KA3524 詳細說明

The KA3524 is a pulse width modulation controller IC that is designed for use in switching power supplies and voltage regulators. It features an error amplifier, a voltage reference, a sawtooth oscillator, and a comparator in a single package. The error amplifier compares the output voltage of the power supply with a reference voltage and adjusts the duty cycle of the PWM signal accordingly to regulate the output voltage. The voltage reference provides a stable reference voltage for the error amplifier to compare against. The sawtooth oscillator generates a triangular waveform that is used for pulse width modulation, while the comparator compares the sawtooth waveform with the error signal and generates a PWM signal based on the comparison.The KA3524 has a wide operating voltage range of 8V to 35V, making it suitable for a variety of applications. It also has built-in protection features such as overcurrent protection and thermal shutdown to ensure the safe operation of the power supply. Additionally, the KA3524 can operate at frequencies up to 100kHz, allowing for efficient switching operation.

主要特徵

Operates in fixed frequency pulse width modulation mode
Internal oscillator with frequency set by two external resistors
Outputs up to 350mA
Regulates output voltage with feedback control
Adjustable dead-time control
Current limiting and thermal shutdown protection
Low standby current consumption

應用

Switching power supplies
DC-DC converters
Battery chargers
Voltage regulators
Power inverters
LED drivers

規格

以下是所選零件的基本參數，涉及零件的特性及其所屬類別。

Manufacturer	onsemi	Product Category !	DC DC Switching Controllers
Series	-	Packaging !	Tube
Package-Case	Transistor Driver	Operating-Temperature	Step-Down, Step-Up/Step-Down
Output-Type	Buck, Flyback, Push-Pull	Function	Enable
Supplier-Device-Package	Positive, Isolation Capable	Number-of-Outputs	1
Topology	0.45	Voltage-Supply-Vcc-Vdd	No

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。

初步規格 KA3524 PDF 下載

常見問題解答

What is KA3524?

The KA3524 is a pulse width modulation (PWM) controller IC commonly used in power supply and motor control applications. It allows for the precise control of switching power supplies and DC motor speed by modulating the width of the pulse signal.

How Does KA3524 Work?

The KA3524 works by comparing a reference voltage with a sawtooth waveform to generate a PWM signal. This signal is then used to control the duty cycle of a power switch, regulating the output voltage or motor speed. The IC can be configured for various modes of operation such as voltage mode and current mode control.

How Many Pins does KA3524 have and What are the Functions of the Pinout Configuration?

The KA3524 typically comes in a 16-pin dual in-line package (DIP). The pinout configuration includes:

VCC: Positive power supply pin.
GND: Ground pin.
COMP: Error amplifier output pin for external compensation.
OSC1, OSC2: Oscillator timing components pins.
RT, CT: Timing components for setting oscillator frequency and duty cycle.
DIS, SD, GATE: Control pins for various functions like disable, shutdown, and gate drive.
OUT: PWM output pin.

What are the Pros and Cons of KA3524?

Pros:

Flexible Control: Allows precise control of power supplies and motor speed.
Wide Operating Voltage Range: Can operate over a wide range of voltages.
Efficiency: Improves power efficiency in switching applications.
Protection Features: Includes protection circuits like overcurrent and thermal shutdown.
Cost-Effective: Provides cost-effective PWM control for various applications.

Cons:

External Components: May require external components for specific applications and tuning.
Complexity: Requires understanding of PWM principles for optimal use.
Noisy Operation: PWM operation may introduce electrical noise in sensitive systems.

Are There Any Equivalents/Alternatives to KA3524 for Recommendation?

The SG3524 from STMicroelectronics is a direct equivalent to the KA3524.
Alternatives to the KA3524 include the TL494 from Texas Instruments and the UC3842 from ON Semiconductor.