ON Semiconductor SG3525AN Pulse Width Modulator

The ON Semiconductor SG3525AN represents a robust and versatile Pulse Width Modulator (PWM) controller, designed to offer precise electrical control in a diverse range of power supply applications. This integrated circuit (IC) is particularly well-suited for implementing the PWM control circuitry required for inverter, switch mode power supplies (SMPS), and motor control systems.

Featuring a wide operating voltage range from 8V to 35V, the SG3525AN provides the flexibility needed to cater to various voltage requirements in electronic circuits. The device is capable of delivering high-performance results with a fixed frequency up to 400kHz, which can be adjusted through external components, allowing designers to tailor the PWM to their specific needs.

The SG3525AN incorporates an array of features that enhance its functionality and ease of use. It includes a 5V reference voltage regulator with a 1% tolerance, which is beneficial for maintaining stable operation under varying conditions. Additionally, the IC has dual alternating outputs that offer the advantage of non-overlapping, adjustable dead-time control, which is critical for preventing simultaneous conduction in power stages, especially in H-bridge configurations.

Protection features are also a key aspect of the SG3525AN, with built-in under-voltage lockout and soft-start capabilities that safeguard the device and the system it controls from sudden voltage fluctuations and power-on surges. The soft-start function minimizes inrush current during startup, which can be particularly important in high-power applications.

The shutdown input pin enables the PWM to be turned off and reset by external logic, providing an additional level of control and safety. With its wide range of features, the SG3525AN is an excellent choice for designers looking to implement efficient and reliable PWM controllers in their power management systems.

Encased in a compact 16-pin DIP (Dual In-line Package), the SG3525AN is designed for easy integration into a variety of circuit boards. ON Semiconductor's commitment to quality ensures that the SG3525AN is a dependable component for managing complex power control tasks in industrial and consumer electronic products.