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Product attributes Property Value
Manufacturer Union Semiconductor International Limited
Product Series UM1530
Packaging Tape & Reel (TR) |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 6V
Voltage - Output (Min/Fixed) 1.8V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.33V @ 200mA
Current - Output 300mA
Current - Quiescent (Iq) 1.5 µA
Current - Supply (Max) -
PSRR 56dB ~ 42dB (100Hz ~ 1kHz)
Control Features -
Protection Features Over Current, Over Temperature
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case TO-236-3, SC-59, SOT-23-3
Supplier Device Package SOT-23-3
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The UM1530S-18 is a fixed 1.8V LDO regulator from Union Semiconductor, delivering 300mA. It features an ultra-low 1.5µA quiescent current and 0.33V dropout at 200mA, making it highly efficient for battery-powered electronics. The SOT-23-3 package offers a compact solution with PSRR of 56dB at 100Hz for noise-sensitive loads.

  • MCU Compatible: 1.8V output for modern low-power processors.
  • Ultra-Low Power: 1.5µA quiescent current extends battery life.
  • Compact: SOT-23-3 package for space-constrained designs.
  • Stable: Low dropout and 56dB PSRR ensure reliable operation.

Low-Power Microcontrollers

1.8V output is standard for modern MCUs, with 1.5µA quiescent current for energy-efficient operation.

Memory Modules

Provides stable 1.8V for DDR and flash memory in portable devices.

Wearable Health Monitors

Compact SOT-23-3 package and low dropout make it ideal for fitness trackers.

FPGA Core Supply

Regulates 1.8V core voltage for low-power FPGAs in battery-operated systems.

IoT Edge Nodes

Ensures reliable 1.8V supply for sensors and wireless transceivers in edge devices.

Q: What is the output voltage?
A: Fixed 1.8V output.
Q: What is the maximum current?
A: 300mA.
Q: What is the input voltage range?
A: Not specified in provided data.
Q: What is the dropout voltage?
A: 0.33V at 200mA.
Q: What is the quiescent current?
A: 1.5µA.
Q: What package is available?
A: SOT-23-3.
Base Product Number : UM1530S-18
1.8V 300mA LDO Linear Regulator Low Quiescent Current SOT-23-3 Union Semiconductor
Q: What is the output voltage?
A: Fixed 1.8V output.
Q: What is the maximum current?
A: 300mA.
Q: What is the input voltage range?
A: Not specified in provided data.
Q: What is the dropout voltage?
A: 0.33V at 200mA.
Q: What is the quiescent current?
A: 1.5µA.
Q: What package is available?
A: SOT-23-3.