SG3524DE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Mode PWM Controller
• Characteristics: High-performance, versatile, and reliable
• Package: DIP-16 (Dual In-line Package with 16 pins)
• Essence: Regulates and controls the pulse width modulation (PWM) signal for various power electronic applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Input Voltage: 8V to 35V
• Output Voltage: 5.1V
• Operating Temperature: -40°C to +85°C
• Frequency Range: 100Hz to 500kHz
• Duty Cycle: Up to 50%
• Output Current: 200mA
• Output Type: Push-Pull

Pin Configuration

The SG3524DE4 IC has a total of 16 pins arranged as follows:

1. Vref
2. Compensation
3. Error Amplifier Output
4. Inverting Input
5. Non-Inverting Input
6. Ground
7. Collector Output
8. Base Drive Output
9. Dead Time Control
10. Oscillator Timing Capacitor
11. Oscillator Timing Resistor
12. Feedback Input
13. Output
14. Vcc
15. Shutdown
16. Sync Input

Functional Features

• Voltage Mode Control: Provides precise regulation of the PWM signal based on the input voltage.
• Error Amplifier: Ensures accurate feedback control by comparing the output voltage with a reference voltage.
• Oscillator: Generates a stable frequency for the PWM signal.
• Dead Time Control: Prevents shoot-through current by introducing a time delay between the turn-off and turn-on of the power switches.
• Shutdown Function: Allows the IC to be turned off when not in use, reducing power consumption.

Advantages and Disadvantages

Advantages: - High-performance and reliable operation - Versatile application range - Precise voltage regulation - Efficient power management - Compact package size

Disadvantages: - Limited output current capacity - Requires external components for complete functionality - Relatively higher cost compared to simpler PWM controllers

Working Principles

The SG3524DE4 operates on the principle of voltage mode control. It compares the output voltage with a reference voltage using an error amplifier. Based on this comparison, it adjusts the duty cycle of the PWM signal to regulate the output voltage. The oscillator generates a stable frequency, and the dead time control prevents shoot-through current in power electronic circuits. The IC can be shut down when not in use to conserve power.

Application Field Plans

The SG3524DE4 finds extensive applications in various power electronic systems, including:

1. Switching Power Supplies
2. DC-DC Converters
3. Inverters
4. Uninterruptible Power Supplies (UPS)
5. Motor Speed Control Circuits
6. Battery Chargers
7. Solar Power Systems
8. LED Lighting Systems

Alternative Models

For similar functionalities, the following alternative models can be considered:

1. TL494CN
2. UC3843AN
3. IRS2153D
4. SG3525AN
5. MC34063AP

These models offer comparable features and can be used as substitutes based on specific requirements.

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