LP3964EMP-5.0/NOPB

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

The LP3964EMP-5.0/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, delivering an output voltage of 5 V with a maximum continuous current of 1.5 A. It utilizes a SOT-223-5 surface-mount package and operates within a temperature range of -40 °C to +125 °C. The device features a typical dropout voltage of 380 mV at full load and maintains a quiescent current of 15 µA. It provides a typical power supply rejection ratio (PSRR) of 60 dB.

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

• Provides stable regulated power for sensitive analog and digital circuits through high accuracy regulation.
• Maintains signal integrity in noise-sensitive environments via effective power supply rejection capabilities.

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

• Powering microcontrollers requiring stable 5 V logic levels
• Supplying analog front-end modules in sensor interfaces
• Providing clean power rails for audio processing components

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

Verify the specific suffix 'NOPB' confirms lead-free status and RoHS compliance as per manufacturer specifications. Ensure the SOT-223-5 footprint matches your PCB design constraints. Confirm thermal management requirements are met for the expected load conditions to maintain operation within the specified junction temperature limits.

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

Select this component when a fixed 5 V output is required with up to 1.5 A capacity. Consider the 380 mV dropout voltage relative to your minimum input voltage to ensure proper regulation. Evaluate the 15 µA quiescent current against system standby power budgets. Verify that the SOT-223-5 package is suitable for your assembly process and available board space.

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

This part belongs to the LP396x series of ultra-low-noise LDOs from Texas Instruments. These regulators are designed for applications demanding high PSRR and low quiescent current. The series offers various fixed and adjustable output options in compact packages, targeting portable electronics and communication devices where power efficiency and noise performance are critical.

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

Check for LP3964EMP-ADJ/NOPB if adjustable voltage is needed. Verify LP3965EMP variants for different current or voltage configurations. Consult official substitution guides for pin-compatible alternatives with similar electrical characteristics.

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

What is the maximum output current capability?

The device supports a maximum output current of 1.5 A.

Does the device support adjustable output voltage?

No, the LP3964EMP-5.0/NOPB is a fixed-output regulator providing exactly 5 V.