UC3525AQG3

DC DC Switching Controllers Overview

The UC3525AQG3 is a regulating pulse width modulator manufactured by Texas Instruments, designed for voltage-mode control applications. It operates within a supply voltage range of 8 V to 35 V and supports switching frequencies from 100 kHz to 500 kHz. The device features two outputs with a maximum duty cycle of 50% and provides an internal reference voltage of 5.1 V. It delivers an output current capability of 500 mA and exhibits rise and fall times of 100 ns and 50 ns, respectively. Packaged in a 20-PLCC (J-Lead) format, it functions reliably across an operating temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Supports multiple converter topologies including boost, buck, flyback, forward, full bridge, half bridge, and push-pull configurations.
• Integrates dual output drivers for versatile power stage interfacing.
• Includes built-in soft-start functionality to manage inrush currents during startup.

DC DC Switching Controllers Applications

• Industrial power supply systems
• DC-to-DC converter designs
• Telecommunications equipment power stages

DC DC Switching Controllers Procurement Notes

Verify the specific suffix G3 indicates lead-free compliance and RoHS status as per official documentation. Confirm the 20-PLCC package dimensions match your PCB footprint requirements. Check for obsolete status or lifecycle notices from Texas Instruments before finalizing procurement plans.

DC DC Switching Controllers Selection Notes

Select this component when a dual-output PWM controller is required for isolated or non-isolated topologies. Ensure the input voltage stays within the 8 V to 35 V operational window. Verify that the 50% maximum duty cycle constraint aligns with the chosen transformer turns ratio and topology requirements.

DC DC Switching Controllers Part Context

This part belongs to the UC3525A series of regulating pulse width modulators. It serves as a commercial-grade variant within the broader family that includes military and extended temperature options. The device is functionally similar to other UC-series controllers but is distinguished by its specific package and temperature rating.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitutes include UC3525AN and UC3525ANG4. Verify pin compatibility and electrical specifications against the original datasheet before substitution.