Union Semiconductor International Limited UM1550Y-28
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.16 | $1.16 |
| 15+ | $0.27 | $4.05 |
| 25+ | $0.26 | $6.50 |
| 50+ | $0.25 | $12.50 |
| 100+ | $0.22 | $22.00 |
| N+ | $0.04 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Union Semiconductor International Limited |
| Product Series | UM1550 |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 8V |
| Voltage - Output (Min/Fixed) | 2.8V |
| 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 | TO-243AA |
| Supplier Device Package | SOT-89-3 |
| ROHS |  |
The UM1550Y-28 is a fixed 2.8V low dropout linear regulator from Union Semiconductor, delivering up to 300mA of output current. Its ultra-low 3.5 µA quiescent current makes it an excellent choice for battery-powered applications. The device offers a dropout voltage of just 0.3V at 200mA, ensuring efficient operation even with low input margins. Housed in a compact SOT-89-3 package, it provides a reliable power solution for portable and space-constrained designs.
- Extended Battery Life: Ultra-low 3.5 µA quiescent current minimizes standby power consumption in portable devices.
- High Efficiency at Low Dropout: 0.3V dropout at 200mA allows operation from nearly depleted batteries.
- Stable Output: PSRR of 56dB at 100Hz filters supply noise for sensitive analog circuits.
- Compact Footprint: SOT-89-3 package saves PCB space in miniaturized designs.
Battery-Powered IoT Sensors
The ultra-low 3.5 µA quiescent current extends battery life in always-on sensor nodes, while the 300mA output supports periodic wireless transmissions.
Portable Medical Devices
The stable 2.8V output and PSRR of 56dB at 100Hz ensure clean power for sensitive analog front-ends in glucose monitors and pulse oximeters.
Wearable Electronics
The compact SOT-89-3 package and low dropout of 0.3V at 200mA make it ideal for space-constrained wearables powered by single-cell Li-ion batteries.
Industrial Control Modules
With 300mA capability, it can power microcontrollers and small actuators in industrial sensors, providing reliable regulation across varying loads.
Smart Home Hubs
The low quiescent current helps meet standby power regulations, while the 2.8V rail suits low-power wireless SoCs in smart thermostats and door locks.
- Q: What is the output voltage of the UM1550Y-28?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.3V at 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is very low at 3.5 µA.
- Q: What package is available?
- A: It comes in the SOT-89-3 package.
UM1550Y-28.pdf
- Q: What is the output voltage of the UM1550Y-28?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.3V at 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is very low at 3.5 µA.
- Q: What package is available?
- A: It comes in the SOT-89-3 package.
