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Product attributes Property Value
Manufacturer Microchip Technology
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) 0.6V @ 500mA
Current - Output 500mA
Current - Quiescent (Iq) 170 µA
Current - Supply (Max) 25 mA
PSRR 75dB (120Hz)
Control Features Enable
Protection Features Over Current, Over Temperature, Reverse Polarity
Operating Temperature 0°C ~ 125°C
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package TO-263-5
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MIC5209-1.8YU from Microchip Technology is a fixed-output LDO regulator delivering 1.8V at up to 500mA. Its low 170µA quiescent current and 600mV dropout voltage make it ideal for battery-powered and energy-efficient designs. With 75dB PSRR at 120Hz, it ensures clean, stable power for noise-sensitive digital and analog circuits. The TO-263-5 package provides excellent thermal performance for reliable operation.

  • High PSRR: 75dB rejection at 120Hz ensures clean power for sensitive digital and RF loads.
  • Low Quiescent Current: 170µA quiescent current maximizes battery life in portable devices.
  • 500mA Output: Supports a wide range of low-voltage digital applications.
  • Thermally Efficient Package: TO-263-5 package dissipates heat effectively for reliable operation.

Digital Core Power for FPGAs

The 1.8V output at 500mA is ideal for powering the core logic of low-power FPGAs and CPLDs, ensuring stable operation during complex computations.

Battery-Powered Wearables

With 170µA quiescent current, it extends battery life in smartwatches and fitness trackers while providing a stable 1.8V rail for the main processor.

DDR Memory Termination

Provides a clean 1.8V supply for DDR2/DDR3 memory termination circuits, reducing signal integrity issues in high-speed data systems.

Portable Audio Players

Delivers low-noise power to audio codecs and DACs, preserving audio fidelity with its high 75dB PSRR.

Industrial Sensor Nodes

Powers low-voltage digital sensors and microcontrollers in industrial IoT applications, offering reliable performance in harsh environments.

Telecom Base Stations

Provides stable 1.8V power to clock distribution ICs and PLLs, maintaining timing accuracy in communication infrastructure.

Q: What is the output voltage of the MIC5209-1.8YU?
A: It provides a fixed output voltage of 1.8V.
Q: What is the maximum output current?
A: The regulator can deliver up to 500mA of output current.
Q: What is the input voltage range?
A: The minimum input voltage is 1.8V; the maximum is not specified in the provided data.
Q: What is the dropout voltage?
A: The dropout voltage is 600mV at a 500mA load.
Q: What is the quiescent current?
A: The quiescent current is 170µA.
Q: What is the PSRR performance?
A: It offers 75dB of power supply rejection ratio at 120Hz.
Base Product Number : MIC5209
1.8V 500mA High PSRR LDO Linear Regulator Low Quiescent Microchip TO-263-5
Q: What is the output voltage of the MIC5209-1.8YU?
A: It provides a fixed output voltage of 1.8V.
Q: What is the maximum output current?
A: The regulator can deliver up to 500mA of output current.
Q: What is the input voltage range?
A: The minimum input voltage is 1.8V; the maximum is not specified in the provided data.
Q: What is the dropout voltage?
A: The dropout voltage is 600mV at a 500mA load.
Q: What is the quiescent current?
A: The quiescent current is 170µA.
Q: What is the PSRR performance?
A: It offers 75dB of power supply rejection ratio at 120Hz.