Union Semiconductor International Limited UM1750S-28
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.00 | $1.00 |
| 15+ | $0.23 | $3.45 |
| 25+ | $0.23 | $5.75 |
| 50+ | $0.21 | $10.50 |
| 100+ | $0.19 | $19.00 |
| N+ | $0.04 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Union Semiconductor International Limited |
| Product Series | UM1750 |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 6V |
| Voltage - Output (Min/Fixed) | 2.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.15V @ 0.15A |
| Current - Output | 350mA |
| Current - Quiescent (Iq) | 130 µA |
| Current - Supply (Max) | 300 µA |
| PSRR | 63dB ~ 40dB (100Hz ~ 10kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| ROHS |  |
The UM1750S-28 is a compact low dropout linear regulator from Union Semiconductor, delivering a fixed 2.8V output with up to 350mA of current. Its low dropout voltage (0.15V @ 0.15A) and 130 µA quiescent current make it highly efficient for battery-operated devices. With a PSRR of 63dB at 100Hz, it provides clean, stable power for noise-sensitive applications. The SOT-23-5 package is ideal for space-constrained designs.
- Compact Footprint: SOT-23-5 package saves PCB space, ideal for miniaturized portable electronics.
- Low Dropout: 0.15V dropout at 150mA ensures efficient operation even with low input voltage margins.
- Excellent Noise Rejection: PSRR of 63dB at 100Hz provides clean power for sensitive analog and RF circuits.
- Battery-Friendly: 130 µA quiescent current extends runtime in battery-powered devices.
Portable Audio Devices
The 2.8V output and high PSRR (63dB at 100Hz) make the UM1750S-28 ideal for powering audio codecs and amplifiers, reducing hum and noise for clearer sound reproduction.
Digital Cameras and Imaging
Image sensors often require a clean 2.8V supply. This LDO provides stable, noise-free power, improving image quality and reducing artifacts in CMOS sensors.
GPS Modules
For GPS receivers, a low-noise 2.8V rail is critical for maintaining signal lock. The UM1750S-28 ensures reliable performance with its excellent ripple rejection.
Handheld Medical Devices
In portable glucose meters and pulse oximeters, the low quiescent current and compact SOT-23-5 package enable long battery life and miniaturized designs.
Smart Wearables
With its small footprint and 350mA capability, this regulator is perfect for smartwatches and fitness trackers, powering sensors and display drivers efficiently.
- Q: What is the output voltage of the UM1750S-28?
- A: The UM1750S-28 provides a fixed output voltage of 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 350mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the official datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.15V at a 0.15A load, allowing operation with minimal input-to-output headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 130 µA, making it suitable for battery-powered applications.
- Q: What package is available?
- A: This LDO is available in a compact SOT-23-5 package.
UM1750S-28.pdf
- Q: What is the output voltage of the UM1750S-28?
- A: The UM1750S-28 provides a fixed output voltage of 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 350mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the official datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.15V at a 0.15A load, allowing operation with minimal input-to-output headroom.
- Q: What is the quiescent current?
- A: The quiescent current is 130 µA, making it suitable for battery-powered applications.
- Q: What package is available?
- A: This LDO is available in a compact SOT-23-5 package.
