TL1451ACNSR

DC DC Switching Controllers Overview

The TL1451ACNSR is a dual-channel PWM controller from Texas Instruments designed for power supply applications. It integrates two complete PWM control circuits on a single chip, featuring a 2.5 V internal regulator, two error amplifiers, an adjustable oscillator, and dead-time comparators. The device supports input voltages from 3.6 V to 50 V and operates within a temperature range of -20°C to 85°C. It utilizes a 16-pin SOIC package and provides independent open-collector outputs for each channel.

DC DC Switching Controllers Feature Summary

• Integrates dual PWM control circuits with independent open-collector outputs
• Includes an internal 2.5 V voltage reference and error amplifiers
• Features adjustable dead-time control for precise timing management
• Provides undervoltage lockout protection for reliable operation

DC DC Switching Controllers Applications

• Dual-output DC-DC converters
• Flyback power supplies
• Buck and boost converter designs
• Industrial power management systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix NSR indicates tape-and-reel packaging when sourcing. Confirm the AC grade matches the required operating temperature range of -20°C to 85°C for your application environment. Ensure compatibility with 16-pin SOIC footprints during PCB layout. Cross-reference datasheet revisions to confirm pinout consistency.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring two synchronized PWM channels with adjustable dead time. It is suitable for isolated topologies like flyback or non-isolated buck/boost configurations. Consider the 3 A output drive capability and wide input voltage range. Evaluate thermal performance within the specified industrial temperature limits.

DC DC Switching Controllers Part Context

This part belongs to the TL1451A family of dual PWM controllers. Variants such as TL1451CN offer through-hole packaging, while TL1451ACPWR uses TSSOP. The ACNSR variant specifically denotes surface-mount assembly in an SOIC package with commercial-grade temperature specifications.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include TL1451CD (SOIC) and TL1451CPWR (TSSOP). Verify pinout compatibility and temperature ratings before substitution. Alternative controllers may require external components if they lack integrated references.