Union Semiconductor International Limited UM1550S-50
| 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) | 5V |
| 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-50 is a fixed 5V low dropout linear regulator from Union Semiconductor, delivering up to 300mA of output current. It features a low dropout voltage of 0.3V @ 200mA and a quiescent current of 3.5 µA, making it an efficient choice for battery-powered and portable applications. Housed in a compact SOT-23-3 package, this LDO provides stable and clean power with good ripple rejection, ensuring reliable performance in space-constrained designs.
- Lower Dropout Voltage: 0.3V @ 200mA allows operation from nearly depleted batteries, maximizing usable energy.
- Extended Battery Life: Low 3.5 µA quiescent current minimizes standby power consumption, ideal for battery-operated devices.
- Compact Footprint: SOT-23-3 package saves PCB space, enabling miniaturized product designs.
- Clean Output: PSRR of 56dB to 42dB (100Hz-1kHz) filters input noise, providing a stable supply for sensitive analog circuits.
High-Efficiency Battery Devices
With a lower dropout of 0.3V @ 200mA, the UM1550S-50 can operate from a battery that is closer to depletion, extending the usable runtime of portable devices.
5V Logic and Interface Circuits
Provides a stable 5V rail for TTL logic, level shifters, and interface drivers in mixed-voltage systems.
Portable Test Equipment
The low dropout and 300mA output make it suitable for handheld multimeters and oscilloscopes that require a stable 5V reference.
Embedded Systems
In microcontroller boards, the UM1550S-50 powers 5V peripherals like relays, displays, and motor drivers with clean, regulated voltage.
Consumer Electronics
Ideal for set-top boxes, routers, and other consumer devices that need a reliable 5V supply from a 6V-12V adapter.
- Q: What is the output voltage of the UM1550S-50?
- A: The UM1550S-50 provides a fixed output voltage of 5V.
- Q: What is the maximum output current?
- A: This LDO can deliver up to 300mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the provided data; please refer to the official datasheet for the full input voltage range.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.3V at a 200mA load, which is slightly lower than the UM1530S series.
- Q: What is the quiescent current?
- A: The quiescent current is 3.5 µA, which is still very low for battery-powered applications.
- Q: What package is the UM1550S-50 available in?
- A: It is available in the compact SOT-23-3 package.
UM1550S-50.pdf
- Q: What is the output voltage of the UM1550S-50?
- A: The UM1550S-50 provides a fixed output voltage of 5V.
- Q: What is the maximum output current?
- A: This LDO can deliver up to 300mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the provided data; please refer to the official datasheet for the full input voltage range.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.3V at a 200mA load, which is slightly lower than the UM1530S series.
- Q: What is the quiescent current?
- A: The quiescent current is 3.5 µA, which is still very low for battery-powered applications.
- Q: What package is the UM1550S-50 available in?
- A: It is available in the compact SOT-23-3 package.
