LMS1587CSX-3.3/NOPB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LMS1587CSX-3.3/NOPB is a fixed-output low dropout linear voltage regulator manufactured by Texas Instruments, designed for high-current applications requiring stable power delivery. It provides a fixed output voltage of 3.3 V with a maximum continuous output current capability of 3 A. The device operates within an input voltage range from a minimum of 2.4 V to a maximum of 13 V. Key electrical specifications include a typical quiescent current of 13 mA and a typical power supply rejection ratio (PSRR) of 72 dB. The unit is housed in a D2PAK-3 (TO-263-3) surface-mount package and supports an operating junction temperature range from -40 °C to +125 °C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed 3.3 V output regulated by a low dropout architecture suitable for battery-powered systems.
• Capable of delivering up to 3 A of continuous load current with fast transient response characteristics.
• Integrates comprehensive protection mechanisms including thermal shutdown and current limiting to ensure operational safety under fault conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable consumer electronics requiring efficient 3.3 V rail generation
• Embedded systems and microcontroller power supplies
• Industrial control modules needing reliable linear regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the complete part number including the /NOPB suffix to confirm lead-free compliance and RoHS adherence as specified by the manufacturer. Ensure the ordering quantity matches the standard tube or tape-and-reel packaging options available through authorized distributors. Confirm that the application environment stays within the specified -40 °C to +125 °C operating temperature range to maintain performance reliability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.3 V output is required at currents up to 3 A with minimal external component count. The TO-263-3 package offers a balance between thermal dissipation capabilities and space efficiency for surface-mount designs. Consider the 72 dB PSRR for noise-sensitive analog sections powered by noisy digital rails.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This regulator belongs to the LMS1587 series of low dropout regulators known for their high current handling and fast response times. The series includes both fixed voltage variants like the 3.3 V version and adjustable configurations. The NOPB designation indicates a non-pb-free compliant alternative was previously available, ensuring environmental compliance for modern manufacturing standards.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The LMS1587CSX-33 is listed as a related variant, though specific functional equivalence should be verified against the official datasheet. Cross-reference with other Texas Instruments LDOs in the same current class if pin compatibility or thermal performance requirements differ significantly.