LM2576HVS-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The UMW LM2576HVS-ADJ is a monolithic integrated circuit functioning as a step-down switching regulator within the SIMPLE SWITCHER family. It provides all active functions for buck converter topologies, delivering up to 3A of output current with excellent line and load regulation capabilities. The device operates from an input voltage range of 4V to 60V, supporting high-voltage applications such as 48V systems. It features a fixed internal oscillator operating at 52kHz, enabling efficient power conversion with minimal external component requirements.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 52kHz fixed-frequency internal oscillator reduces external component count
• Built-in thermal shutdown and current limit protection mechanisms ensure operational safety
• Supports TTL-compatible shutdown control for low-power standby modes
• Capable of driving loads up to 3A with stable voltage regulation

Voltage Regulators - DC DC Switching Regulators Applications

• High-voltage step-down conversion for industrial control systems
• Pre-regulation stages for linear regulators in battery-powered devices
• On-card switching regulators for distributed power architectures
• Positive-to-negative voltage inversion using Buck-Boost configurations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches the required package type, typically TO-263 or DPAK variants. Confirm RoHS compliance status through official manufacturer documentation. Ensure the specific revision level aligns with design specifications. Cross-reference part numbers carefully as suffixes may indicate temperature ranges or packaging formats without altering core electrical functionality.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing buck converters requiring high input voltages up to 60V and continuous currents near 3A. The adjustable output version allows flexibility for custom voltage rails between 1.23V and 57V. Consider the 52kHz switching frequency for balancing efficiency against passive component size. Evaluate thermal performance requirements given the TO-263 package's heat dissipation characteristics under heavy load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576HV series, designed for high-voltage step-down applications. It serves as a direct functional replacement for legacy National Semiconductor parts. The series is widely used in telecommunications and automotive electronics where robust voltage regulation from higher bus voltages is necessary. It complements lower-voltage counterparts like the standard LM2576 by extending input tolerance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576HVSX-ADJ/NOPB is a verified equivalent offering identical electrical specifications and pinout compatibility. Other manufacturers produce pin-compatible alternatives, but verification of internal oscillator accuracy and thermal limits is required before substitution.