Union Semiconductor International Limited UM1550DA-33
| 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) | 3.3V |
| 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-33 is a fixed 3.3V low dropout linear regulator from Union Semiconductor, delivering up to 300mA. Its ultra-low 3.5µA quiescent current makes it ideal for battery-powered applications. The 0.3V dropout at 200mA ensures efficient operation. Housed in a compact 6-DFN (2x2mm) package, it offers excellent PSRR of 56dB at 100Hz for clean power delivery.
- Extended Battery Life: Ultra-low 3.5µA quiescent current minimizes standby power consumption.
- Space-Saving Design: 6-DFN (2x2mm) package fits tight PCB layouts in portable devices.
- Clean Output: 56dB PSRR at 100Hz filters supply noise for sensitive analog circuits.
- Low Dropout: 0.3V dropout at 200mA maximizes headroom for efficient regulation.
Battery-Powered IoT Sensors
The ultra-low 3.5µA quiescent current extends battery life in always-on sensor nodes, while the 300mA output supports periodic wireless transmissions.
Wearable Health Monitors
The compact 6-DFN (2x2mm) package fits space-constrained PCBs in smartwatches and fitness bands, providing a stable 3.3V rail for MCUs and sensors.
Portable Audio Devices
With PSRR of 56dB at 100Hz, this LDO minimizes power supply noise, preserving audio fidelity in portable DACs and headphone amplifiers.
Energy Harvesting Systems
The low dropout of 0.3V @ 200mA maximizes efficiency when converting from low-voltage sources like solar cells or thermoelectric generators.
Industrial Control Modules
Provides a clean, regulated 3.3V supply for logic circuits and transceivers in industrial sensors, ensuring reliable operation in noisy environments.
Smart Home Hubs
Maintains stable voltage for Zigbee/Z-Wave radios and microcontrollers, reducing noise-induced communication errors.
- Q: What is the output voltage of the UM1550DA-33?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA continuously.
- 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, ideal for battery-powered devices.
- Q: What package is available?
- A: It comes in a compact 6-DFN (2x2mm) package.
UM1550DA-33.pdf
- Q: What is the output voltage of the UM1550DA-33?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA continuously.
- 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, ideal for battery-powered devices.
- Q: What package is available?
- A: It comes in a compact 6-DFN (2x2mm) package.
