UC3524N

DC DC Switching Controllers Overview

The UC3524N is a voltage-mode PWM controller from Texas Instruments, designed for advanced regulating pulse width modulation applications. It operates within a supply voltage range of 8V to 40V and supports a maximum switching frequency of 450 kHz. The device features two outputs with a drive current capability of 100 mA. It utilizes a 16-pin PDIP package suitable for through-hole installation. The operational temperature range extends from 0°C to 70°C, supporting topologies such as push-pull, half-bridge, and full-bridge converters.

DC DC Switching Controllers Feature Summary

• Voltage-mode control architecture for stable regulation
• Dual output drivers capable of sourcing 100 mA
• Integrated oscillator with external timing control
• Built-in undervoltage lockout protection

DC DC Switching Controllers Applications

• Push-pull DC-DC converter designs
• Half-bridge power supply circuits
• Full-bridge converter systems
• Universal input AC-DC adapters

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'N' confirms the PDIP package variant when ordering. Ensure the application circuit matches the 100 mA output drive specification. Confirm that the operating environment remains within the 0°C to 70°C temperature limits. Check for compatibility with the required switching frequency range up to 450 kHz. Validate pinout alignment for through-hole mounting on the target PCB.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring robust voltage-mode control in isolated converter topologies. It is suitable for applications needing dual synchronized outputs for push-pull or bridge configurations. Consider the 100 mA drive strength for direct gate driving of medium-power MOSFETs. Evaluate the 8V to 40V supply range against the system's input voltage profile. Ensure the thermal requirements fit within the standard commercial grade specifications.

DC DC Switching Controllers Part Context

The UC3524N belongs to the UC3524 family of advanced regulating pulse width modulators manufactured by Texas Instruments. This series is widely used in industrial and consumer power supplies. The 'N' suffix specifically denotes the plastic dual in-line package (PDIP) configuration. It serves as a legacy but reliable solution for non-synchronous PWM control needs.

DC DC Switching Controllers Replacement Considerations

UC3524AN: Pin-compatible alternative with extended temperature range capabilities.

DC DC Switching Controllers FAQ

What is the maximum duty cycle for the UC3524N?

The maximum duty cycle is limited to 45% to ensure proper reset time for the internal flip-flop.

Can the UC3524N be used for single-ended forward converters?

Yes, it supports various topologies including forward converters, though it is often preferred for push-pull and bridge applications due to its dual outputs.