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Product attributes Property Value
Manufacturer Union Semiconductor International Limited
Product Series UM1750
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) -
Current - Output 350mA
Current - Quiescent (Iq) 130 µA
Current - Supply (Max) 300 µA
PSRR 63dB ~ 40dB (100Hz ~ 10kHz)
Control Features Enable
Protection Features Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 6-WDFN Exposed Pad
Supplier Device Package 6-DFN (2x2)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The UM1750DA-18 is a high-performance low dropout linear regulator from Union Semiconductor, delivering a fixed 1.8V output with up to 350mA of current. Its low 130 µA quiescent current and excellent PSRR (63dB at 100Hz) make it an efficient, noise-free power solution for battery-operated and sensitive analog circuits. Housed in a compact 6-DFN (2x2) package, it is designed for space-constrained applications requiring stable and clean voltage regulation.

  • Extended Battery Life: Ultra-low 130 µA quiescent current minimizes power draw in standby mode, ideal for portable devices.
  • Clean Power Delivery: High PSRR (63dB at 100Hz) suppresses input ripple, ensuring stable voltage for sensitive RF and analog circuits.
  • Space-Saving Design: The 6-DFN (2x2) package reduces PCB footprint, enabling miniaturized product designs.
  • Reliable Output: Supports up to 350mA, providing sufficient current for microcontrollers, sensors, and wireless modules.

Portable Battery-Powered Devices

The low 130 µA quiescent current and 1.8V output make the UM1750DA-18 ideal for powering low-voltage digital cores in portable electronics, extending battery life during standby and active operation.

Wireless Communication Modules

With a PSRR of 63dB at 100Hz, this regulator effectively filters power supply noise, ensuring clean power for RF transceivers and improving signal integrity in IoT and Bluetooth modules.

Sensor Power Supplies

Precise 1.8V regulation is critical for MEMS sensors and analog front-ends. The UM1750DA-18 provides stable voltage, reducing measurement errors in industrial and medical sensing applications.

Wearable Electronics

The compact 6-DFN (2x2) package is ideal for space-constrained wearable designs, delivering reliable 1.8V power for microcontrollers and display drivers while maintaining low power consumption.

Embedded Systems

For mixed-signal embedded systems requiring a dedicated 1.8V rail, this LDO offers a simple, low-noise solution with up to 350mA capability, supporting multiple peripheral loads.

Q: What is the output voltage of the UM1750DA-18?
A: The UM1750DA-18 provides a fixed output voltage of 1.8V.
Q: What is the maximum output current?
A: It can deliver up to 350mA of continuous output current.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; please refer to the official datasheet for this parameter.
Q: What is the dropout voltage?
A: The dropout voltage is not specified in the provided data for this variant.
Q: What is the quiescent current?
A: The quiescent current is 130 µA, making it suitable for battery-powered applications.
Q: What package is available?
A: This LDO is available in a compact 6-DFN (2x2) package.
Base Product Number : UM1750DA
1.8V 350mA 6-DFN High PSRR LDO Linear Regulator Low Quiescent Current Union Semiconductor
Q: What is the output voltage of the UM1750DA-18?
A: The UM1750DA-18 provides a fixed output voltage of 1.8V.
Q: What is the maximum output current?
A: It can deliver up to 350mA of continuous output current.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; please refer to the official datasheet for this parameter.
Q: What is the dropout voltage?
A: The dropout voltage is not specified in the provided data for this variant.
Q: What is the quiescent current?
A: The quiescent current is 130 µA, making it suitable for battery-powered applications.
Q: What package is available?
A: This LDO is available in a compact 6-DFN (2x2) package.