Union Semiconductor International Limited UM1550DA-28
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.12 | $1.12 |
| 15+ | $0.26 | $3.90 |
| 25+ | $0.25 | $6.25 |
| 50+ | $0.24 | $12.00 |
| 100+ | $0.21 | $21.00 |
| 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 | 6-WDFN Exposed Pad |
| Supplier Device Package | 6-DFN (2x2) |
| ROHS |  |
The UM1550DA-28 is a fixed 2.8V low dropout regulator from Union Semiconductor, offering 300mA output. Its ultra-low 3.5µA quiescent current makes it perfect for battery-powered applications. The 0.3V dropout at 200mA ensures efficient operation. Housed in a compact 6-DFN (2x2mm) package, it provides 56dB PSRR at 100Hz for clean power delivery.
- Ultra-Low Quiescent Current: 3.5µA extends battery life significantly.
- Compact Package: 6-DFN (2x2mm) saves valuable PCB space.
- Low Dropout: 0.3V at 200mA maximizes efficiency.
- Good Noise Rejection: 56dB PSRR at 100Hz for stable output.
Battery-Powered Wearables
The 3.5µA quiescent current extends battery life in fitness trackers and smartwatches, while 300mA supports sensors and displays.
Low-Power Wireless Modules
Provides stable 2.8V for LoRa, Zigbee, and BLE modules, ensuring reliable communication with minimal power consumption.
Portable Instrumentation
Regulates power for handheld multimeters and thermometers, maintaining accuracy with low noise output.
Energy-Efficient Sensors
Ideal for always-on environmental sensors, the low dropout and quiescent current maximize energy harvesting efficiency.
Consumer Remote Controls
Delivers clean 2.8V for IR transmitters and microcontrollers, extending battery life in everyday devices.
Embedded Audio Systems
Powers audio codecs and amplifiers with 56dB PSRR at 100Hz, reducing hum and noise.
- Q: What is the output voltage of the UM1550DA-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; refer to the datasheet for absolute maximum ratings.
- 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 3.5µA.
- Q: What package is available?
- A: It comes in a 6-DFN (2x2mm) package.
UM1550DA-28.pdf
- Q: What is the output voltage of the UM1550DA-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; refer to the datasheet for absolute maximum ratings.
- 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 3.5µA.
- Q: What package is available?
- A: It comes in a 6-DFN (2x2mm) package.
