LP2989AIM-1.8

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

The LP2989AIM-1.8 is a micropower, low-noise, fixed-output linear regulator manufactured by Texas Instruments. It provides a stable 1.8V output with a maximum load current of 500mA. The device supports an input voltage range up to 16V and features a typical dropout voltage of 310mV at full load. It incorporates internal protection mechanisms including overcurrent limiting, thermal shutdown, and short-circuit protection. The component operates within an extended industrial temperature range from -40°C to +125°C and is housed in an 8-pin SOIC surface-mount package.

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

• Micropower operation with low quiescent current consumption
• Low noise performance suitable for sensitive analog circuits
• Integrated overcurrent, thermal, and short-circuit protection
• Fixed 1.8V output voltage with high line and load regulation

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

• Portable battery-powered equipment requiring efficient power management
• RF and communication modules needing low-noise power supplies
• Microcontroller and digital logic circuit biasing
• Industrial control systems operating in harsh environments

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

Verify the specific suffix 'AIM' indicates the commercial/industrial temperature grade and SOIC package variant. Confirm the '-1.8' designation matches the required 1.8V output voltage. Ensure compatibility with the target PCB footprint for the 8-SOIC package. Check for RoHS compliance status if environmental regulations apply to the final assembly.

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

Select this component when a fixed 1.8V rail is required with moderate current capability up to 500mA. Consider the low dropout characteristic for applications where the input voltage is close to the output level. Evaluate the thermal dissipation requirements based on the input-output voltage differential and load current. Compare against adjustable regulators if variable output voltages are needed instead.

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

This part belongs to the LP2989 family of micropower LDO regulators designed for low-noise applications. The family offers various fixed output voltages and packaging options including SOIC, WSON, and MSOP. These regulators are engineered for portable electronics and battery-operated devices where power efficiency and signal integrity are critical design constraints.

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

LP2989AIM-1.8/NOPB is a direct equivalent with lead-free (No Pb) manufacturing process.