SG3525ADWR2

DC DC Switching Controllers Overview

The SG3525ADWR2G is a pulse width modulation controller from onsemi, designed for switching power supplies. It operates within an 8V to 35V supply range and supports half-bridge and push-pull topologies. The device features two output drivers capable of sourcing or sinking over 200 mA, with a maximum switching frequency of 400 kHz. It includes a trimmed 5.1 V reference, adjustable dead-time control, and built-in soft-start circuitry. The component is housed in a 16-SOIC package and functions reliably between 0°C and +70°C.

DC DC Switching Controllers Feature Summary

• Integrated error amplifier with input common-mode range including the reference voltage to reduce external components.
• Totem-pole output stages providing high current drive capability for direct transistor control.
• Built-in soft-start functionality controlled by a single external timing capacitor.
• Undervoltage lockout with hysteresis ensures jitter-free operation during sub-normal input voltages.

DC DC Switching Controllers Applications

• DC-DC switching power supplies
• Push-pull converter designs
• Half-bridge power conversion systems

DC DC Switching Controllers Procurement Notes

Verify the complete part number includes the 'G' suffix (SG3525ADWR2G) to confirm RoHS compliance and lead-free status. Confirm the SOIC-Wide-16 package dimensions match your PCB footprint requirements. Ensure design accounts for the specified operating temperature range of 0°C to +70°C. Check moisture sensitivity level (MSL 3) handling procedures if storage conditions exceed limits.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring precise duty cycle control with minimal external component count. The integrated soft-start and undervoltage lockout simplify protection circuit design. Suitable for designs needing synchronized oscillator operation via the dedicated sync terminal. Ideal for industrial and commercial power supplies where reliable PWM generation is critical.

DC DC Switching Controllers Part Context

This component belongs to the SG3525A series of PWM controllers, which are standard solutions for various switching regulator architectures. The SG3525ADWR2G variant specifically denotes the tape-and-reel packaging format in the wide SOIC package. It serves as a core control IC for managing power stage timing and feedback loops in non-isolated and isolated converter topologies.

DC DC Switching Controllers Replacement Considerations

Direct pin-compatible substitutes include other SG3525 variants such as SG3525AN or SG3525D, provided voltage and temperature ratings align. Cross-reference electrical parameters like output current drive and reference accuracy when considering alternative manufacturers' equivalents.