LM2599S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2599S-12/NOPB is a SIMPLE SWITCHER® step-down switching regulator manufactured by Texas Instruments. It operates with an input voltage range of 4.5V to 40V and provides a fixed 12V output at up to 3A. The device integrates a 150kHz fixed-frequency oscillator and features internal frequency compensation for minimal external component requirements. It utilizes TO-263-8 (D2PAK) surface-mount packaging and supports operation temperatures from -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a monolithic switching regulator with fixed 150kHz frequency control
• Includes internal frequency compensation requiring minimal external components
• Features thermal shutdown and current limit protection circuits

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator stages for linear regulators
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation, as National Semiconductor was acquired by Texas Instruments; official documentation lists this part under TI. Confirm the suffix 'NOPB' indicates lead-free and RoHS compliance. Ensure the package matches the TO-263-8 specification and validate the fixed 12V output variant against the specific application requirement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a high-voltage input source up to 40V. The 3A current capability suits moderate power applications. Consider the TO-263 package for thermal management needs. Verify that the fixed 150kHz switching frequency aligns with the inductor selection and EMI constraints of the target design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2599 series of SIMPLE SWITCHER power converters. It is functionally similar to the through-hole LM2599T but packaged for surface mount assembly. The 'S' suffix denotes the SMD version, while '12' specifies the fixed 12V output voltage. The 'NOPB' suffix confirms environmental compliance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2599S-12/NOPB is the direct equivalent of LM2599S-12. Cross-reference with LM2599T-12 for through-hole alternatives. Check for newer revisions or pin-compatible successors within the SIMPLE SWITCHER family if supply chain adjustments are necessary.