Union Semiconductor International Limited UM1450Y-28
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.64 | $2.64 |
| 15+ | $0.61 | $9.15 |
| 25+ | $0.59 | $14.75 |
| 50+ | $0.56 | $28.00 |
| 100+ | $0.50 | $50.00 |
| N+ | $0.10 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Union Semiconductor International Limited |
| Product Series | UM1450 |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 2.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.3V @ 150mA |
| Current - Output | 250mA |
| Current - Quiescent (Iq) | 5 µA |
| Current - Supply (Max) | - |
| PSRR | 40dB (100Hz) |
| Control Features | - |
| Protection Features | - |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-243AA |
| Supplier Device Package | SOT-89-3 |
| ROHS |  |
The UM1450Y-28 from Union Semiconductor is a robust 2.8V low dropout linear regulator featuring a 250mA output current capability. Its key highlight is the ultra-low 5 µA quiescent current, which is ideal for battery-powered and energy-conscious applications. The SOT-89-3 package offers enhanced thermal performance compared to smaller SOT-23 variants, making it suitable for higher continuous load currents. With a low 0.3V dropout at 150mA, this LDO ensures efficient operation and stable output voltage across a range of conditions.
- Enhanced Thermal Management: The SOT-89-3 package dissipates heat more effectively, supporting higher continuous output currents.
- Ultra-Low Power Draw: 5 µA quiescent current is ideal for extending battery life in standby and low-power modes.
- Low Dropout Voltage: 0.3V at 150mA allows operation from lower input voltages, improving system efficiency.
- High Current Capability: 250mA output supports a wide range of loads, from sensors to microcontrollers.
Higher-Power Portable Devices
The SOT-89-3 package provides improved heat dissipation, making it suitable for applications drawing closer to the 250mA maximum continuously.
Automotive Accessory Power
For dash cams or GPS trackers, the robust package and stable 2.8V output ensure reliable operation in varying temperature conditions.
Industrial Control Interfaces
The low quiescent current and 250mA capability make it ideal for powering industrial sensors and control logic in remote or battery-backed systems.
LED Driver Bias Supply
Provides a stable bias voltage for LED driver ICs, ensuring consistent brightness in portable lighting or display backlights.
Multi-Cell Battery Systems
With a low dropout of 0.3V, it can efficiently regulate from a 3.0V or 3.3V rail down to 2.8V, reducing power loss in multi-rail systems.
Networking Equipment
Powers low-voltage logic and PHY chips in compact networking devices like routers and switches, benefiting from the low standby power.
- Q: What is the output voltage?
- A: The UM1450Y-28 provides a fixed 2.8V output.
- Q: What is the maximum output current?
- A: It can supply up to 250mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly provided; typically it should be above 2.8V plus dropout. Refer to the datasheet.
- Q: What is the dropout voltage?
- A: Dropout voltage is 0.3V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is extremely low at 5 µA.
- Q: What package is this available in?
- A: It is available in the SOT-89-3 package, which offers better thermal performance.
UM1450Y-28.pdf
- Q: What is the output voltage?
- A: The UM1450Y-28 provides a fixed 2.8V output.
- Q: What is the maximum output current?
- A: It can supply up to 250mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly provided; typically it should be above 2.8V plus dropout. Refer to the datasheet.
- Q: What is the dropout voltage?
- A: Dropout voltage is 0.3V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is extremely low at 5 µA.
- Q: What package is this available in?
- A: It is available in the SOT-89-3 package, which offers better thermal performance.
