SG2526N

Overview

The SG2526N is a high-performance monolithic pulse width modulator circuit designed for fixed-frequency switching regulators and power control applications. It operates within an 8 V to 35 V supply range and features a temperature-compensated voltage reference trimmed to ±1%. The device includes a sawtooth oscillator with a frequency range of 1 Hz to 350 kHz, error amplifiers, and two low-impedance outputs capable of sourcing and sinking 100 mA each. It supports Buck, Flyback, and Forward topologies in an 18-pin PDIP package.

Feature Summary

• Integrates dual low-impedance power drivers for direct MOSFET control
• Includes digital current limiting functionality for protection
• Features a precision temperature-compensated voltage reference

Applications

• Fixed-frequency DC-to-DC switching regulators
• High-reliability isolated switching power supplies
• General-purpose power control circuits

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm pinout compatibility and electrical tolerances. Ensure the procurement channel provides valid traceability for the component's manufacturing origin. Cross-reference the ordering information with the manufacturer's latest datasheet to confirm availability status and any potential obsolescence notices before finalizing orders.

Selection Notes

Select this component when a robust voltage-mode PWM controller with integrated drive capabilities is required. The dual output structure simplifies half-bridge or push-pull converter designs by eliminating external driver stages. Consider the 350 kHz maximum switching frequency and 100 mA output current limits when sizing external components for the target application load requirements.

Part Context

This part belongs to the SG2526B series of regulating pulse width modulators manufactured by Microchip Technology. It is classified under Switching Controllers within the PMIC category. The device serves as a core control element in various power conversion architectures, offering a complete solution for oscillator, error amplification, and pulse steering logic in a single integrated circuit.

Replacement Considerations

The SG3526N is a documented substitute within the same family, sharing identical functional specifications but differing in operating temperature range and package type.