LM2597N-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2597N-12 is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a 150 kHz step-down voltage regulator. It provides a fixed 12 V output with a maximum current capability of 0.5 A. The device operates within an input voltage range of 4.5 V to 40 V and supports both buck and inverting topologies. It features a shutdown mode with a typical quiescent supply current of 5 mA. The component is rated for operation between -40°C and +125°C and is housed in an MDIP-8 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for simplified power conversion applications
• Fixed 12 V output option eliminates the need for external feedback resistors
• Includes internal frequency compensation and current limit protection
• Supports high-efficiency step-down and negative voltage generation configurations

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power systems requiring regulated intermediate bus voltages
• On-board switching regulators for general-purpose electronics
• Pre-regulator stages for linear post-regulators
• Battery-powered equipment utilizing step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' corresponds to the MDIP-8 through-hole package variant rather than surface-mount options like 'M' or 'MX'. Confirm RoHS compliance status via the manufacturer datasheet, as historical production runs may vary. Ensure the fixed 12 V output specification matches the design requirement, as adjustable versions exist within the same family.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12 V output at 0.5 A is required from an input source up to 40 V. The LM2597N-12 is suitable for designs prioritizing simplicity over adjustable output flexibility. Consider thermal management requirements for the MDIP-8 package if operating near maximum load currents. Verify that the 150 kHz switching frequency aligns with electromagnetic interference constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the SIMPLE SWITCHER family, which integrates control circuitry, power switches, and protection features into a single monolithic IC. The LM2597 series is engineered to reduce design time by minimizing external component counts. The fixed-voltage variants offer standardized outputs to streamline power supply development for common system rails.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2597N-12/NOPB: Direct equivalent with lead-free and halogen-free construction.