LP3872ESX-5.0/NOPB

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

The LP3872ESX-5.0/NOPB is a fixed-output linear regulator from the LP387x series, manufactured by Texas Instruments. It provides a nominal output voltage of 5.0 V with an input supply range of 2.5 V to 7 V. The device ensures a maximum DC output current of 1.5 A and operates within a junction temperature range of -40°C to 125°C. Key electrical parameters include an output voltage accuracy of ±1.5% at room temperature and ±3.0% over all conditions. Dropout voltage is typically 38 mV at 150 mA and 380 mV at 1.5 A load. Ground pin current is typically 6 mA at full load, while shutdown mode reduces quiescent current to 10 nA.

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

• Ultra-low dropout voltage performance for efficient power delivery under varying loads.
• Integrated shutdown mode significantly reduces quiescent current to minimize battery drain.
• Built-in short-circuit and overtemperature protection safeguards against fault conditions.
• Fast transient response capability suitable for dynamic microprocessor power applications.

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

• Microprocessor power supplies
• GTL, GTL+, BTL, and SSTL bus terminators
• Power supplies for DSPs
• SCSI terminators

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

Verify the specific package variant (TO-263) matches the design requirements. Confirm that the fixed 5.0 V output aligns with system specifications. Ensure proper thermal management is implemented given the 1.5 A current capability. Check datasheet for minimum output capacitance requirements to maintain stability.

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

Select this component when a fixed 5.0 V rail is required with high current capacity up to 1.5 A. Consider the TO-263 package for its thermal dissipation capabilities in surface-mount designs. Evaluate the low dropout characteristics if the input voltage margin is tight. Verify compatibility with downstream load transient requirements.

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

This part belongs to the LP387x family of fast ultra-low-dropout linear regulators developed on a CMOS process. The series includes variants like LP3872 and LP3875, offering various output voltages from 1.8 V to 5 V. The LP3872 specifically features an ERROR flag for status monitoring, distinguishing it from the sense-pin enabled LP3875.

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

LP3872EMP-5.0/NOPB is a listed parameter-equivalent alternative available from Texas Instruments.