TL594CD

DC DC Switching Controllers Overview

The TL594CD is a fixed-frequency pulse width modulation control circuit designed primarily for switchmode power supply applications. It integrates complete PWM control circuitry, including an on-chip oscillator with master or slave operation capabilities and adjustable deadtime control. The device features two error amplifiers and a precision 5.0 V reference with 1.5% accuracy. It includes undervoltage lockout protection and uncommitted output transistors rated to source or sink 500 mA. The circuit supports both push-pull and single-ended output configurations.

DC DC Switching Controllers Feature Summary

• Integrates complete pulse width modulation control circuitry with an on-chip oscillator
• Features adjustable deadtime control and dual error amplifiers
• Includes uncommitted output transistors capable of sourcing or sinking 500 mA
• Provides a precision 5.0 V reference voltage with high accuracy

DC DC Switching Controllers Applications

• Switchmode power supply control
• DC-to-DC converters
• AC-to-DC converters

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (e.g., CD vs CDTBG) against the manufacturer's current datasheet to confirm package type and lead-free status. Ensure the ordering part number matches the required pin configuration and thermal specifications for the target application.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring integrated PWM control without external timing components. Consider the 500 mA output drive capability for direct transistor switching in low-power stages. Evaluate the master/slave oscillator mode if multiple supplies require synchronization.

DC DC Switching Controllers Part Context

The TL594 is a legacy industry-standard PWM controller widely used in various power conversion topologies. It serves as a foundational control IC for designing efficient power supplies, often replaced by newer integrated solutions but still prevalent in established industrial and consumer electronics designs.

DC DC Switching Controllers Replacement Considerations

Direct replacements include the TL494, which shares functional compatibility. Verify pinout alignment and electrical parameter margins when substituting to ensure system stability.