Union Semiconductor International Limited UM1770Y-30
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.12 | $1.12 |
| 15+ | $0.26 | $3.90 |
| 25+ | $0.25 | $6.25 |
| 50+ | $0.24 | $12.00 |
| 100+ | $0.21 | $21.00 |
| N+ | $0.04 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Union Semiconductor International Limited |
| Product Series | UM1770 |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 6V |
| Voltage - Output (Min/Fixed) | 3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.32V @ 500mA |
| Current - Output | 500mA |
| Current - Quiescent (Iq) | 140 µA |
| Current - Supply (Max) | 300 µA |
| PSRR | 65dB ~ 45dB (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 | SOT-89-5/6 |
| Supplier Device Package | SOT-89-5 |
| ROHS |  |
The UM1770Y-30 is a fixed 3.0V low dropout linear regulator capable of delivering 500mA. It features a low quiescent current of 140 µA and excellent PSRR of 65dB to 45dB, making it suitable for noise-sensitive applications. Housed in a compact SOT-89-5 package, it offers a dropout voltage of just 0.32V at full load, ensuring efficient operation.
- Extended Battery Life: Ultra-low 140 µA quiescent current minimizes standby power consumption.
- Clean Output: High PSRR (65dB~45dB) effectively filters supply noise for sensitive electronics.
- High Efficiency: Low dropout voltage of 0.32V at 500mA reduces power dissipation.
- Compact Design: SOT-89-5 package saves PCB space for portable applications.
Battery-Powered Portable Devices
The low 140 µA quiescent current and 3.0V fixed output make it ideal for extending battery life in handheld instruments, remote controls, and wearable electronics.
Noise-Sensitive Analog Circuits
With PSRR of 65dB to 45dB (100Hz to 10kHz), this LDO provides clean, stable power for precision op-amps, ADCs, and sensor signal conditioning.
Wireless Modules and RF Transceivers
The high PSRR across a wide frequency range helps minimize supply noise interference, ensuring reliable performance in Wi-Fi, Bluetooth, and Zigbee modules.
Industrial Control Systems
The 500mA output capability and SOT-89-5 package support robust power delivery for microcontrollers, PLCs, and industrial sensors in space-constrained designs.
Automotive Infotainment
Stable 3.0V output with low dropout ensures consistent power for infotainment processors and display drivers, even during input voltage dips.
Post-Regulation for Switching Converters
Use after a buck converter to reduce ripple and provide a clean, low-noise 3.0V rail for mixed-signal systems.
- Q: What is the output voltage of the UM1770Y-30?
- A: The fixed output voltage is 3.0V.
- Q: What is the maximum output current?
- A: It can deliver up to 500mA.
- Q: What is the input voltage range?
- A: The input voltage is 3V (typical); refer to the datasheet for the full operating range.
- Q: What is the dropout voltage?
- A: Dropout is typically 0.32V at a 500mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 140 µA.
- Q: What package is available?
- A: It comes in a SOT-89-5 package.
UM1770Y-30.pdf
- Q: What is the output voltage of the UM1770Y-30?
- A: The fixed output voltage is 3.0V.
- Q: What is the maximum output current?
- A: It can deliver up to 500mA.
- Q: What is the input voltage range?
- A: The input voltage is 3V (typical); refer to the datasheet for the full operating range.
- Q: What is the dropout voltage?
- A: Dropout is typically 0.32V at a 500mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 140 µA.
- Q: What package is available?
- A: It comes in a SOT-89-5 package.
