SG3524D

Overview

The SG3524D is a voltage mode PWM controller manufactured by Texas Instruments, designed for regulating pulse width modulation in switching power supplies. It supports multiple topologies including Buck, Boost, Flyback, Forward, Full Bridge, Half Bridge, and Push-Pull configurations. The device features two outputs with a maximum duty cycle of 45% and operates within an input voltage range of 8 V to 40 V. It delivers an output current of up to 100 mA and functions at a switching frequency of 450 kHz. The component is housed in a 16-pin SOIC-Narrow package and operates between 0°C and +70°C.

Feature Summary

• Supports versatile converter topologies such as push-pull, flyback, and half-bridge
• Includes dedicated shutdown pin for power management control
• Provides dual synchronized outputs for complex power stage requirements

Applications

• Switching power supply regulation
• DC-DC converter design
• Motor drive systems

Procurement Notes

Verify the manufacturer origin carefully, as the SG3524 series was originally developed by National Semiconductor and is now produced by Texas Instruments. Ensure the specific suffix matches the required packaging and temperature grade. Cross-reference datasheets to confirm electrical parameters align with system requirements before procurement.

Selection Notes

Select this component for applications requiring flexible topology support and precise voltage mode control. Consider the 450 kHz switching frequency and 100 mA output drive capability when designing transformer and driver stages. Evaluate thermal performance within the specified operating temperature range for reliable long-term operation.

Part Context

The SG3524 belongs to a family of high-performance PWM controllers widely used in industrial and commercial power electronics. While Microchip Technology is listed in the query, the SG3524D is specifically identified as a Texas Instruments product in official documentation. This distinction is critical for sourcing and technical support.

Replacement Considerations

Compatible alternatives include the SG3524A for extended temperature ranges or the SG3525 for similar functionality. Verify pin compatibility and electrical specifications against the original design requirements before substitution.