LP3961EMP-1.8/NOPB

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

The LP3961EMP-1.8/NOPB is a fixed-output low-dropout linear regulator from the Texas Instruments LP3961 series, providing a stable 1.8 V output with an 800 mA maximum load current capability. It operates within an input voltage range of 2.5 V to 7 V and maintains high accuracy with ±1.5% initial output voltage tolerance. The device features a typical power supply rejection ratio (PSRR) of 60 dB and a quiescent current of 15 µA. Designed for surface-mount applications in SOT-223-5 packages, it supports operation across an extended temperature range from -40°C to +125°C.

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

• Provides fast transient response characteristics suitable for dynamic load conditions
• Ensures high output voltage precision through tight manufacturing tolerances
• Maintains low power consumption via minimal quiescent current draw

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

• Portable battery-powered electronic devices requiring efficient voltage regulation
• Embedded systems utilizing microcontrollers or digital logic circuits
• Communication modules needing stable low-noise power supplies

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

Verify the complete part number including the suffix /NOPB to confirm lead-free compliance and RoHS adherence. Ensure the ordering code matches the specific 1.8 V fixed output variant. Confirm the SOT-223-5 package type aligns with your PCB footprint requirements before finalizing procurement orders.

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

Select this component when a fixed 1.8 V rail is required with up to 800 mA capacity. Consider the 2.5 V minimum input voltage constraint against your source supply. Evaluate the thermal performance in the SOT-223-5 package under expected load conditions to ensure reliable operation within the specified temperature limits.

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

This device belongs to the LP3961 family of ultra-fast low-dropout regulators designed for portable applications. The series offers various fixed output voltages while maintaining consistent electrical characteristics such as low quiescent current and high PSRR. The LP3961EMP-1.8/NOPB specifically targets applications demanding precise 1.8 V regulation in compact surface-mount form factors.

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

Direct substitutes include other LP3961 variants with different fixed output voltages, such as LP3961EMP-2.5/NOPB or LP3961EMP-5.0/NOPB, provided the system voltage requirements are adjusted accordingly. Cross-series replacements require verification of pin compatibility and electrical parameter alignment.