Texas Instruments

LM2576S-3.3/NOPB  

DC Switching Voltage Regulators

LM2576S-3.3/NOPB Description

The LM2576S-3.3/NOPB is a 3.3V, 3A fixed-output buck (step-down) switching voltage regulator from Texas Instruments' SIMPLE SWITCHER® series. Designed for high-efficiency power conversion, it operates over a 4V to 40V input range, making it suitable for a wide variety of industrial, automotive, and consumer applications. Housed in a DDPAK (TO-263) surface-mount package, this regulator integrates a 52kHz switching frequency, simplifying external component selection while minimizing EMI. The device is ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory compliance.

LM2576S-3.3/NOPB Features

• High Efficiency: Buck topology with up to 3A continuous output current, reducing heat dissipation compared to linear regulators.
• Wide Input Range (4V–40V): Supports unregulated AC/DC adapters, automotive systems, and battery-powered applications.
• Fixed 3.3V Output: Eliminates the need for external feedback resistors, simplifying design.
• Low Standby Current: Optimized for power-sensitive applications.
• Built-in Protection: Includes thermal shutdown and current limiting for robust operation.
• Non-Synchronous Rectification: Cost-effective solution with minimal external components (only 4 required).
• Industrial-Grade Reliability: MSL3 (168 hours) moisture sensitivity ensures durability in harsh environments.

LM2576S-3.3/NOPB Applications

• Automotive Systems: Powering infotainment, sensors, and ECUs from 12V/24V batteries.
• Industrial Controls: Step-down conversion for PLCs, motor drives, and instrumentation.
• Consumer Electronics: Efficient power management in set-top boxes, routers, and LED drivers.
• Battery-Powered Devices: Extends runtime in portable equipment by minimizing dropout losses.
• Embedded Systems: Reliable voltage regulation for microcontrollers and FPGAs.

Conclusion of LM2576S-3.3/NOPB

The LM2576S-3.3/NOPB stands out as a high-performance, cost-effective buck regulator, combining wide input range, high current capability, and simplicity of use. Its fixed 3.3V output reduces design complexity, while industrial-grade robustness makes it ideal for demanding environments. Whether for automotive, industrial, or consumer applications, this regulator delivers efficiency, reliability, and compact power management in a single package.

LM2576S-3.3/NOPB Documents

Download datasheets and manufacturer documentation for LM2576S-3.3/NOPB

PCN Assembly/Origin :

GFAB to FFAB 22/Mar/2017      

Datasheets :

LM2576(HV)      

HTML Datasheet :

LM2576(HV)