SG1524J

Overview

The SG1524J is a monolithic integrated circuit serving as a regulating pulse width modulator for power supply inverters or switching regulators. It operates within an 8V to 40V range and features a stable 5V reference with less than ±1% temperature coefficient. The device supports oscillator frequencies from 100Hz to 300kHz and includes dual 50mA output transistors capable of single-ended or push-pull configurations. Total supply current remains under 10mA, while reference regulation is maintained at 0.4%. Packaged in a 16-pin dual-in-line format, it integrates complete PWM control circuitry.

Feature Summary

• Integrates voltage reference, error amplifier, oscillator, and pulse steering flip-flop
• Provides dual alternating output switches with current limiting and shutdown capabilities
• Supports both single-ended and push-pull output topologies

Applications

• Regulating power supply inverters
• Switching regulator designs
• High-reliability isolated switching applications

Procurement Notes

Verify component authenticity through authorized Microchip Technology channels due to historical availability constraints. Confirm specific ordering suffixes such as -883B for military-grade variants if required. Request official datasheets and compliance documentation directly from the manufacturer to ensure alignment with current production standards and environmental regulations prior to finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring a comprehensive PWM controller with integrated protection features. Ensure input voltage requirements align with the specified 8V to 40V operational range. Consider the 16-pin CDIP package dimensions for board layout compatibility. Evaluate thermal management needs based on the dual 50mA output transistor capabilities and total supply current limitations inherent to the design.

Part Context

The SG1524J belongs to the broader SG1524 family of switching controllers manufactured by Microchip Technology. It functions as a high-reliability voltage mode PWM controller suitable for demanding industrial and aerospace environments. The component represents a legacy solution for robust power management, often superseded by newer iterations but still utilized in established designs requiring proven performance characteristics.

Replacement Considerations

SG1524BJ-ND serves as a documented substitute variant within the same product family.