Union Semiconductor International Limited UM1550Y-18
| 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) | 1.8V |
| 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 |
The UM1550Y-18 from Union Semiconductor is an ultra-low quiescent current LDO regulator, delivering a fixed 1.8V output at up to 300mA. Its exceptional 3.5 µA ground current and low 0.3V dropout voltage make it a premier choice for battery-powered and energy-sensitive applications. The SOT-89-3 package offers a balance of thermal performance and compact size.
- Industry-Leading Low Quiescent Current: The 3.5 µA quiescent current is ideal for extending battery life in always-on and standby applications.
- Low Dropout Voltage: The 0.3V dropout at 200mA allows for efficient regulation even with small input-to-output voltage margins.
- High Output Current: Capable of sourcing 300mA, suitable for a wide range of low-power peripherals.
- Stable Ripple Rejection: Provides 56dB to 42dB PSRR across 100Hz to 1kHz, ensuring a clean output for sensitive loads.
Ultra-Low Power Battery Devices
With a quiescent current of only 3.5 µA, the UM1550Y-18 is perfect for energy-harvesting devices, smart meters, and other applications where every microamp of current is critical.
Real-Time Clock (RTC) Backup Power
Its low dropout and ultra-low quiescent current make it ideal for maintaining power to RTCs and SRAM in microcontrollers when the main supply is removed.
Portable Consumer Electronics
Provides a stable 1.8V rail for low-power sensors, codecs, and interface logic in devices like e-readers, remote controls, and portable audio players.
Standby and Sleep Mode Circuits
The minimal current draw ensures that systems can remain in standby mode for extended periods without draining the battery, making it suitable for always-on applications.
Industrial Sensor Nodes
For remote industrial sensors powered by batteries or small solar cells, this LDO ensures efficient and reliable 1.8V power for the sensing and communication electronics.
- Q: What is the output voltage of the UM1550Y-18?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA of output current.
- 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 extremely low at 3.5 µA.
- Q: What package is available?
- A: It is available in the SOT-89-3 package.
UM1550Y-18.pdf
- Q: What is the output voltage of the UM1550Y-18?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA of output current.
- 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 extremely low at 3.5 µA.
- Q: What package is available?
- A: It is available in the SOT-89-3 package.
