A flexible integrated circuit that is frequently used in applications involving voltage regulation and power supplies is the SG3525A DIP16. You've come to the correct spot if you're a student, enthusiast, or hobbyist wanting to learn more about this part. We'll introduce you to the SG3525A DIP16 and go over some of its fundamental features in this blog post.

What is the SG3525A DIP16?

The SG3525A is a voltage mode PWM (Pulse Width Modulation) controller. It is often found in DIP16 (Dual In-Line Package) form, making it convenient for prototyping and circuit building. This IC is widely used in power supply designs, inverters, and other applications that require precise control of the output voltage.

Key Features

The SG3525A DIP16 offers a range of features that make it a popular choice for power supply design:

  • Voltage Mode PWM: The IC operates in voltage mode PWM control, making it suitable for regulating the output voltage of power supplies.

  • Frequency Adjustment: It allows you to adjust the operating frequency, which can be crucial in different applications.

  • Error Amplifier: The IC features an error amplifier that can be used for voltage feedback and regulation.

  • Synchronization: The SG3525A can be synchronized with an external clock signal for precise timing control.

  • Dead Time Control: It provides dead time control, which prevents shoot-through in bridge configurations.

  • Soft-Start: A soft-start feature is included to prevent voltage overshoot during startup.

  • Current Limiting: The IC has provisions for current limiting, enhancing protection for connected components.


The SG3525A DIP16 Power Supply IC is commonly used in the following applications:

  1. Switching Power Supplies: It is a key component in designing efficient and regulated switch-mode power supplies.

  2. Inverters: The IC plays a crucial role in designing inverters for applications such as uninterruptible power supplies (UPS) and solar inverters.

  3. Voltage Regulators: You can use the SG3525A to create precise voltage regulators for various electronic circuits.

  4. Motor Control: In motor control applications, it can be used to control the speed and direction of DC motors.

  5. Lighting Control: The IC can be utilized in lighting control systems and LED drivers.

Basic Circuit Example

Here's a simple example of a power supply circuit using the SG3525A DIP16:

  • Input Voltage: Connect the input voltage source to pin 8 (Vref).

  • Output Voltage: Connect the output voltage to the output pins (typically pins 10 and 11).

  • Feedback Loop: Use the error amplifier (pins 1 and 2) to create a feedback loop for voltage regulation.

  • Frequency Control: Connect an external resistor and capacitor to pins 5 and 6 for frequency adjustment.

Remember that this is a basic example, and actual circuit design can be more complex depending on your specific requirements.


A flexible part that is necessary for many power supply and voltage regulation applications is the SG3525A DIP16 Power Supply IC. It is essential to grasp the fundamentals of this integrated circuit (IC) whether you are building an inverter or repairing a do-it-yourself power supply. You'll discover that the SG3525A can be a useful tool in your arsenal of electronics components as you work more on your projects.

Keep checking back for more posts about real-world uses and circuit designs utilizing the SG3525A DIP16 Power Supply IC.