SG3524NS

Overview

The SG3524NS is a voltage-mode PWM controller manufactured by Texas Instruments, designed for regulating power supplies and switching regulators. It operates within an input voltage range of 8V to 40V and supports switching frequencies up to 450 kHz. The device features dual outputs capable of single-ended or push-pull configurations, with a maximum duty cycle of 45%. Packaged in a 16-pin SOIC format, it includes an onboard reference, error amplifier, programmable oscillator, and current-limiting circuitry.

Feature Summary

• Integrates complete PWM power control circuitry including error amplifiers and oscillators on a single monolithic chip
• Provides dual alternating outputs suitable for both single-ended and push-pull applications
• Incorporates dedicated current-limiting and shutdown circuitry for enhanced protection

Applications

• Regulating power supplies
• Transformer-coupled DC-to-DC converters
• Switching regulators

Procurement Notes

Verify the specific package suffix against official datasheets to confirm pinout compatibility and thermal characteristics. Ensure the component meets required operating temperature ranges and electrical specifications for the target application before integration.

Selection Notes

Select this component for designs requiring integrated voltage-mode PWM control with flexible output configurations. Consider the 450 kHz frequency limit and 45% duty cycle constraints when designing transformer-coupled topologies.

Part Context

This part belongs to the SG3524 family of regulating pulse width modulators. It serves as a versatile control element for high-power-output applications, offering a cost-effective solution for constructing stable switching power systems.

Replacement Considerations

Compatible substitutes include LM3524 variants and UC3524 series components from various manufacturers, provided they match the 16-pin package and electrical parameters.