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Product attributes Property Value
Manufacturer Union Semiconductor International Limited
Product Series UM1560
Packaging Tape & Reel (TR) |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 8V
Voltage - Output (Min/Fixed) 4.2V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.3V @ 200mA
Current - Output 300mA
Current - Quiescent (Iq) 3.5 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 SC-74A, SOT-753
Supplier Device Package SOT-23-5
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The UM1560S-42 is a high-performance low dropout linear regulator from Union Semiconductor, delivering a fixed 4.2V output with up to 300mA of current. Its ultra-low 3.5 µA quiescent current makes it an excellent choice for battery-powered devices, while the 0.3V dropout at 200mA ensures efficient operation. Housed in a compact SOT-23-5 package, this LDO provides clean, stable power with good ripple rejection for sensitive electronics.

  • Extended Battery Life: Ultra-low 3.5 µA quiescent current minimizes standby power consumption, ideal for portable and IoT devices.
  • High Efficiency at Low Dropout: 0.3V dropout at 200mA allows operation close to the output voltage, reducing power dissipation.
  • Stable Output: PSRR of 56dB to 42dB (100Hz-1kHz) filters supply noise, ensuring clean power for sensitive analog circuits.
  • Compact Footprint: SOT-23-5 package saves board space for space-constrained designs.

Battery-Powered IoT Sensors

The ultra-low 3.5 µA quiescent current significantly extends battery life in always-on IoT sensor nodes, where the regulator maintains a stable 4.2V rail for microcontrollers and sensors.

Portable Medical Devices

With a 300mA output and low dropout of 0.3V, this LDO ensures reliable operation of portable glucose meters and pulse oximeters, even as the battery voltage declines.

Wireless Communication Modules

The PSRR of 56dB to 42dB (100Hz to 1kHz) helps filter noise from switching converters, providing a clean 4.2V supply for RF transceivers and improving signal integrity.

Wearable Electronics

The compact SOT-23-5 package and low dropout make it suitable for space-constrained wearables like smartwatches, delivering consistent power to display drivers and sensors.

Industrial Control Interfaces

For industrial sensors requiring a stable 4.2V reference, this LDO offers thermal protection and short-circuit protection, ensuring robust performance in harsh environments.

Audio Equipment

The low noise characteristics and stable output make it suitable for powering audio codecs and amplifiers in portable speakers, minimizing hum and distortion.

Q: What is the output voltage of the UM1560S-42?
A: The UM1560S-42 provides a fixed output voltage of 4.2V.
Q: What is the maximum output current?
A: It can deliver up to 300mA 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 datasheet for the full operating range.
Q: What is the dropout voltage?
A: The dropout voltage is 0.3V at a 200mA load.
Q: What is the quiescent current?
A: The quiescent current is very low at 3.5 µA, making it ideal for battery-powered applications.
Q: What package is available?
A: The UM1560S-42 is available in the SOT-23-5 package.
Base Product Number : UM1560S-42
300mA 4.2V LDO Linear Regulator Low Quiescent Current SOT-23-5 Union Semiconductor
Q: What is the output voltage of the UM1560S-42?
A: The UM1560S-42 provides a fixed output voltage of 4.2V.
Q: What is the maximum output current?
A: It can deliver up to 300mA 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 datasheet for the full operating range.
Q: What is the dropout voltage?
A: The dropout voltage is 0.3V at a 200mA load.
Q: What is the quiescent current?
A: The quiescent current is very low at 3.5 µA, making it ideal for battery-powered applications.
Q: What package is available?
A: The UM1560S-42 is available in the SOT-23-5 package.