SG3525ADWR2G

DC DC Switching Controllers Overview

The SG3525ADWR2G is a Pulse Width Modulator (PWM) control circuit manufactured by onsemi, designed for DC-DC switching applications. It operates within a supply voltage range of 8V to 35V and supports a switching frequency from 100Hz to 400kHz. The device features a push-pull output topology with two outputs, housed in a 16-SOIC package. Key electrical parameters include a maximum duty cycle of 49% and an operating temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Integrated soft-start circuitry to manage inrush current during startup.
• Built-in under-voltage lockout mechanism ensures stable operation.
• Adjustable dead-time control optimizes efficiency for power MOSFETs.
• Dedicated synchronization pin allows external clock locking.

DC DC Switching Controllers Applications

• Push-pull DC-DC converter designs
• Forward converter topologies
• Half-bridge power supplies
• Battery-powered equipment controllers

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'DWR2G' against the official onsemi datasheet to confirm RoHS compliance and tape-and-reel packaging specifications. Ensure the ordering part number matches the required industrial temperature grade and package width dimensions before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when a robust PWM controller with integrated protection features is required for isolated or non-isolated power stages. Consider the 16-SOIC footprint for PCB layout constraints and verify that the 400kHz maximum frequency aligns with the target transformer or inductor design requirements.

DC DC Switching Controllers Part Context

This part belongs to the SG3525A family of PWM controllers, widely recognized for their reliability in industrial power conversion. The 'A' designation indicates improved performance over earlier iterations, while the 'DWR2G' suffix specifies the surface-mount SOIC package and environmental compliance.

DC DC Switching Controllers Replacement Considerations

Direct functional substitutes include the LM3525 and UC3525 series. Verify pin compatibility and electrical parameter margins before substituting, as minor differences in drive strength or internal reference tolerances may exist between manufacturers.

DC DC Switching Controllers FAQ

What is the maximum duty cycle limitation of the SG3525ADWR2G?

The device includes internal circuitry to limit the maximum duty cycle to 49%, preventing transformer saturation in push-pull and forward converter applications.

Does the SG3525ADWR2G support external clock synchronization?

Yes, the IC features a dedicated synchronization input pin that allows the internal oscillator to be locked to an external clock signal.