LP3874EMPX-5.0

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

The LP3874EMPX-5.0 is a fixed positive ultra-low-dropout linear regulator manufactured by Texas Instruments, providing a stable 5.0 V output with a maximum DC load current of 0.8 A. It operates from an input voltage range of 2.5 V to 7 V and features an ultra-low dropout voltage of typically 240 mV at full load. The device incorporates remote voltage sensing via the SENSE pin to improve regulation accuracy at distant loads. It includes comprehensive protection mechanisms such as overcurrent limiting, thermal shutdown, and an ERROR flag that indicates when the output voltage drops below nominal levels.

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

• Ultra-low dropout voltage operation for efficient power delivery under varying load conditions
• Integrated remote voltage sense capability to compensate for trace resistance and maintain precise output regulation
• Built-in error monitoring flag that signals low-voltage conditions caused by input sag or thermal stress
• Low quiescent current in shutdown mode to minimize power consumption during standby periods

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

• Microprocessor power supplies requiring fast transient response
• GTL, GTL+, BTL, and SSTL bus terminators
• Power supplies for digital signal processors (DSPs)
• Post regulators in high-efficiency linear power architectures

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

Verify the specific ordering suffix against the manufacturer's latest datasheet to confirm package type and lead-free status. Ensure the selected variant matches the required output voltage tolerance and thermal performance specifications for the target application environment.

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

Select this component for applications requiring precise remote load regulation and fast transient response. Consider the thermal dissipation requirements based on the input-output voltage differential and maximum load current. Verify compatibility with the required output capacitor ESR range to ensure loop stability.

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

This part belongs to the LP387x series of fast ultra-low-dropout linear regulators designed for CMOS processes. The series offers wide input voltage ranges and multiple output voltage options. The LP3874 variant specifically adds a remote sense pin compared to the LP3871, enhancing performance in systems where the load is physically separated from the regulator.

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

LP3874EMP-5.0/NOPB