Union Semiconductor International Limited UM1550Y-36
| 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) | 3.6V |
| 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 |
| ROHS |  |
The UM1550Y-36 from Union Semiconductor is a fixed 3.6V low dropout regulator delivering up to 300mA. Its standout feature is the ultra-low 3.5µA quiescent current, making it perfect for battery-powered and energy-harvesting applications. With a dropout of only 0.3V at 200mA and PSRR of 56dB at 100Hz, it provides clean, efficient power. The SOT-89-3 package ensures good heat dissipation.
- Ultra-Low Quiescent Current: 3.5µA extends battery life in always-on applications.
- High Output Current: 300mA supports a wide range of peripherals.
- Excellent PSRR: 56dB at 100Hz filters out power supply noise for sensitive analog circuits.
- Low Dropout: 0.3V at 200mA maximizes efficiency with low input voltages.
Battery-Powered Wearables
The 3.5µA quiescent current is exceptional for fitness trackers and smartwatches, extending battery life to months. The 300mA output supports sensors and displays.
Wireless Sensor Networks
Powers Zigbee and LoRa modules in industrial IoT. The 0.3V dropout at 200mA ensures efficient operation from 3.7V Li-ion batteries.
Portable Instruments
Provides a stable 3.6V rail for multimeters and handheld test equipment. The high PSRR of 56dB rejects power supply noise.
Energy Harvesting Systems
Ideal for solar or vibration-powered devices where every microamp counts. The low quiescent current maximizes harvested energy usage.
Medical Implants
Regulates 3.6V for hearing aids and glucose monitors. The SOT-89-3 package offers good thermal performance.
Smart Home Hubs
Powers always-on voice assistants and connectivity modules. The low dropout maintains regulation during battery discharge.
- Q: What is the output voltage?
- A: The fixed output voltage is 3.6V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: Input must be above 3.6V plus dropout; maximum input not specified in provided data.
- 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 is the PSRR?
- A: PSRR is 56dB at 100Hz and 42dB at 1kHz.
UM1550Y-36.pdf
- Q: What is the output voltage?
- A: The fixed output voltage is 3.6V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: Input must be above 3.6V plus dropout; maximum input not specified in provided data.
- 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 is the PSRR?
- A: PSRR is 56dB at 100Hz and 42dB at 1kHz.
