Union Semiconductor International Limited UM1550S-12
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.04 | $1.04 |
| 15+ | $0.24 | $3.60 |
| 25+ | $0.23 | $5.75 |
| 50+ | $0.22 | $11.00 |
| 100+ | $0.20 | $20.00 |
| 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) | 1.2V |
| 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-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | SOT-23-3 |
| ROHS |  |
The UM1550S-12 is a fixed 1.2V low dropout linear regulator from Union Semiconductor, offering up to 300mA output current. With an ultra-low quiescent current of 3.5µA and dropout of 0.3V at 200mA, it is engineered for battery-powered and energy-efficient applications. The SOT-23-3 package ensures a minimal footprint for compact designs.
- Ultra-Low Quiescent Current (3.5µA): Dramatically extends battery life in standby and low-power modes.
- High Output Current (300mA): Supports a wide range of loads while maintaining regulation.
- Low Dropout (0.3V @ 200mA): Enables efficient operation with small input-to-output voltage margins.
- Compact SOT-23-3 Package: Ideal for space-constrained portable devices.
Ultra-Low-Power IoT Sensors
The 3.5µA quiescent current is perfect for battery-powered sensors that spend most time in sleep mode, extending battery life to years.
1.2V Core Supply for MCUs
Provides a stable 1.2V rail for low-voltage microcontrollers and digital cores in energy-harvesting systems.
Wearable Health Monitors
Compact SOT-23-3 package and low power consumption suit continuous health tracking devices.
Wireless Modules
Stable output for RF transceivers requiring clean 1.2V supply, with PSRR up to 56dB at 100Hz.
Portable Instruments
Low dropout and high efficiency make it suitable for handheld measurement tools.
Always-On Power Domains
Maintains regulation with minimal current draw in standby circuits of smart home devices.
- Q: What is the output voltage of the UM1550S-12?
- A: The fixed output voltage is 1.2V.
- Q: What is the maximum output current?
- A: It can supply up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is 1.2V to 5.5V (typical LDO operation).
- Q: What is the dropout voltage?
- A: Dropout is 0.3V at 200mA load.
- Q: What is the quiescent current?
- A: Ultra-low quiescent current of 3.5µA.
- Q: What package is available?
- A: It comes in a SOT-23-3 package.
UM1550S-12.pdf
- Q: What is the output voltage of the UM1550S-12?
- A: The fixed output voltage is 1.2V.
- Q: What is the maximum output current?
- A: It can supply up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is 1.2V to 5.5V (typical LDO operation).
- Q: What is the dropout voltage?
- A: Dropout is 0.3V at 200mA load.
- Q: What is the quiescent current?
- A: Ultra-low quiescent current of 3.5µA.
- Q: What package is available?
- A: It comes in a SOT-23-3 package.
