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Product attributes Property Value
Manufacturer National Semiconductor
Product Series
Packaging Bulk |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 16V
Voltage - Output (Min/Fixed) 1.8V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.65V @ 500mA
Current - Output 500mA
Current - Quiescent (Iq) 200 µA
Current - Supply (Max) 9 mA
PSRR 60dB (1kHz)
Control Features Enable, Error Flag
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-WDFN Exposed Pad
Supplier Device Package 8-WSON (4x4)

The LP2989ILD-1.8 is a 500mA low-dropout linear regulator from National Semiconductor, providing a fixed 1.8V output. Featuring 0.65V dropout at full load and 200µA quiescent current, it excels in battery-powered and low-voltage applications. The 8-WSON package offers excellent thermal performance in a small footprint.

  • 500mA output with 0.65V dropout enables efficient regulation from low input margins.
  • 200µA quiescent current extends battery life in portable designs.
  • 60dB PSRR at 1kHz filters switching noise for clean analog rails.
  • 8-WSON package with exposed pad improves heat dissipation.

Portable Battery Devices

With 200µA quiescent current and 0.65V dropout, it maximizes battery life in handheld instruments.

FPGA Core Supplies

Delivers 1.8V at 500mA for low-voltage FPGA cores, with 60dB PSRR at 1kHz for stable operation.

Wireless Transceivers

Provides clean 1.8V to RF sections, minimizing noise coupling into sensitive PLLs and mixers.

Medical Sensors

Low dropout ensures regulation from a 2.5V lithium cell, powering precision analog front-ends.

Automotive Infotainment

Regulates 1.8V for DSPs and codecs, with thermal shutdown for dashboard heat exposure.

Industrial IoT Nodes

Compact 8-WSON package fits small sensor nodes, delivering stable 1.8V for microcontrollers.

Q: What is the output voltage?
A: Fixed 1.8V output.
Q: What is the maximum current?
A: 500mA continuous output.
Q: What is the input voltage range?
A: Not specified in the provided data; refer to datasheet.
Q: What is the dropout voltage?
A: 0.65V at 500mA load.
Q: What is the quiescent current?
A: 200µA typical.
Q: What package is available?
A: 8-WSON (4x4mm).
Base Product Number : LP2989ILD
1.8V 500mA 8-WSON LDO Linear Regulator Low Dropout Low Quiescent National Semiconductor
Q: What is the output voltage?
A: Fixed 1.8V output.
Q: What is the maximum current?
A: 500mA continuous output.
Q: What is the input voltage range?
A: Not specified in the provided data; refer to datasheet.
Q: What is the dropout voltage?
A: 0.65V at 500mA load.
Q: What is the quiescent current?
A: 200µA typical.
Q: What package is available?
A: 8-WSON (4x4mm).