TL494CNSR

DC DC Switching Controllers Overview

The TL494CNSR is a pulse-width modulation control circuit manufactured by Texas Instruments, designed for versatile power supply applications. It supports multiple topologies including boost, buck, flyback, forward, push-pull, half-bridge, and full-bridge configurations. The device features two output drivers capable of sourcing or sinking 200 mA each, with a maximum switching frequency of 300 kHz and a maximum duty cycle of 45%. It operates within a supply voltage range of 7 V to 40 V and includes an internal 5 V reference. The component is housed in a 16-pin NS (SOIC-Narrow) package and functions across an industrial temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Integrated dual-output transistor drivers providing high current capability for direct switch control
• Built-in error amplifiers and dead-time control comparator for precise regulation and protection
• Internal oscillator with external timing components allows flexible frequency adjustment
• Configurable single-ended or push-pull output modes via dedicated control pin

DC DC Switching Controllers Applications

• Computer and computer peripheral power supplies
• Industrial DC-to-DC converters
• Power management systems for communication networks
• Microwave and consumer electronics power circuits

DC DC Switching Controllers Procurement Notes

Verify the suffix 'SR' indicates tape-and-reel packaging when ordering. Confirm the 'C' grade corresponds to the -40°C to +85°C operating range required for your design. Ensure the 16-SOIC narrow footprint matches your PCB layout constraints. Cross-reference the manufacturer part number against official TI documentation to avoid counterfeit components.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring a robust, general-purpose PWM controller with integrated power stage drivers. It is suitable for both isolated and non-isolated converter topologies. Consider the 45% maximum duty cycle limitation when designing continuous conduction mode circuits. Verify that the external component values align with the desired switching frequency and dead-time specifications.

DC DC Switching Controllers Part Context

The TL494 series is a widely adopted standard in power electronics, offering a balance of performance and cost-effectiveness. The TL494CNSR variant specifically provides surface-mount convenience with the SOIC-Narrow package while maintaining the electrical characteristics of the broader family. It serves as a foundational control IC for various regulated power supply architectures.

DC DC Switching Controllers Replacement Considerations

TL494CN: Through-hole equivalent with identical electrical specifications but different package type. TL494CDR: Surface-mount alternative in SOIC-16 package, potentially with different reel quantities. TL5001: Pin-compatible upgrade offering enhanced performance features.