LM2597N-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597N-3.3/NOPB is a step-down switching regulator from Texas Instruments, operating at a fixed 52 kHz frequency. It delivers an output voltage of 3.3 V with a maximum load current of 1 A. The device integrates a 50 V rated power switch and includes internal compensation for stability. Key electrical specifications include a typical quiescent current of 8 mA and a shutdown supply current of 50 µA. Input voltage ranges from 4.5 V to 40 V, ensuring reliable performance across various industrial and commercial applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch eliminates external component requirements
• Fixed 52 kHz switching frequency reduces passive component size
• Internal frequency compensation simplifies design implementation
• Shutdown mode significantly reduces quiescent current consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for linear post-regulators
• Efficient buck converters for embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as NOPB to ensure lead-free compliance and specific tape-and-reel or tube packaging options. Confirm that the manufacturer datasheet matches the requested pinout and thermal characteristics before finalizing procurement orders to avoid compatibility issues.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a simple, cost-effective buck converter solution is required for currents up to 1 A. Ensure the input voltage range aligns with system requirements and verify that the fixed 52 kHz frequency meets EMI constraints. Consider thermal management needs based on the expected load current and ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM259x family of adjustable and fixed-output step-down switching regulators. It shares architectural similarities with other members like the LM2596 but offers optimized performance for specific voltage outputs. The family is widely used in general-purpose power supplies due to its robustness and ease of use.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements may include LM2597ADJ/NOPB for adjustable output or LM2596 series variants if input voltage ranges differ. Verify pin compatibility and thermal performance before substitution. Consult official cross-reference guides for guaranteed functional equivalence.