Union Semiconductor International Limited UM1550DB-30
| 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) | 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 | 4-XDFN Exposed Pad |
| Supplier Device Package | 4-DFN (1x1) |
| ROHS |  |
The UM1550DB-30 is a 300mA LDO linear regulator from Union Semiconductor, providing a fixed 3.0V output. Featuring an ultra-low 3.5 µA quiescent current and a compact 4-DFN (1x1) package, it is designed for power-sensitive portable electronics. Its low 0.3V dropout at 200mA ensures efficient operation in battery-powered systems.
- Ultra-Low Power Consumption: 3.5 µA quiescent current extends battery life in standby.
- Miniature Footprint: 4-DFN (1x1) ideal for space-constrained designs.
- Low Dropout Operation: 0.3V at 200mA maximizes usable battery range.
- Stable Output: 56dB PSRR at 100Hz reduces supply noise.
Low-Power Microcontrollers
Provides a stable 3.0V rail for MCUs like MSP430 or STM32L0, with low quiescent current for sleep modes.
Wireless Transceivers
Supports 3.0V RF modules (e.g., LoRa, Sigfox) with clean power and low dropout for extended range.
Portable Medical Devices
Ultra-small package and low power consumption enable compact glucose meters and pulse oximeters.
Smart Cards & Readers
Delivers 300mA peak for NFC controller operation, with low dropout ensuring stable voltage during RF bursts.
Industrial Sensors
Maintains regulation in 3.0V sensor bridges, with PSRR filtering noise from industrial power lines.
- Q: What is the output voltage of the UM1550DB-30?
- A: The fixed output voltage is 3.0V.
- 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 a compact 4-DFN (1x1) package.
UM1550DB-30.pdf
- Q: What is the output voltage of the UM1550DB-30?
- A: The fixed output voltage is 3.0V.
- 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 a compact 4-DFN (1x1) package.
