Union Semiconductor International Limited UM1540DA-30
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.28 | $1.28 |
| 15+ | $0.29 | $4.35 |
| 25+ | $0.29 | $7.25 |
| 50+ | $0.27 | $13.50 |
| 100+ | $0.24 | $24.00 |
| N+ | $0.05 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Union Semiconductor International Limited |
| Product Series | UM1540 |
| 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) | 0.33V @ 200mA |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 1.5 µA |
| Current - Supply (Max) | - |
| PSRR | 56dB ~ 42dB (100Hz ~ 1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 6-WDFN Exposed Pad |
| Supplier Device Package | 6-DFN (2x2) |
| ROHS |  |
The UM1540DA-30 is a high-performance low dropout linear regulator from Union Semiconductor, delivering a fixed 3.0V output with up to 300mA of current. Its ultra-low 1.5 µA quiescent current makes it exceptionally power-efficient for battery-operated devices. The regulator maintains a low dropout voltage of just 0.33V at 200mA, maximizing usable battery range. Housed in a compact 6-DFN (2x2) package, it is ideal for space-constrained applications requiring stable and clean power delivery.
- Extended Battery Life: Ultra-low 1.5 µA quiescent current minimizes standby power consumption, ideal for portable electronics.
- High Efficiency: Low dropout voltage of 0.33V at 200mA allows operation from nearly depleted batteries, improving system efficiency.
- Compact Footprint: The 6-DFN (2x2) package saves valuable PCB space for miniaturized designs.
- Clean Power Output: PSRR of 56dB to 42dB (100Hz-1kHz) filters supply noise, ensuring stable performance for sensitive analog circuits.
Battery-Powered IoT Sensors
The ultra-low 1.5 µA quiescent current significantly extends battery life in always-on IoT sensor nodes, where the regulator maintains a stable 3.0V rail for microcontrollers and sensors.
Portable Medical Devices
With a 300mA output and low dropout of 0.33V, this LDO provides a clean, stable 3.0V supply for precision analog front-ends in glucose monitors and pulse oximeters, ensuring accurate readings.
Wearable Electronics
The compact 6-DFN (2x2) package fits space-constrained smartwatches and fitness bands, delivering efficient 3.0V power from a single Li-ion cell with minimal heat dissipation.
Wireless Communication Modules
The PSRR of 56dB to 42dB (100Hz to 1kHz) helps suppress power supply noise, making it suitable for powering RF transceivers and Bluetooth modules that require a quiet 3.0V supply.
Industrial Control Systems
This regulator offers reliable 3.0V power for industrial microcontrollers and digital logic, with thermal protection ensuring stable operation in harsh environments.
Audio Equipment
The low noise characteristics and stable output make it ideal for powering audio codecs and DACs in portable audio players, preserving signal integrity.
- Q: What is the output voltage of the UM1540DA-30?
- A: The fixed output voltage is 3.0V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the datasheet; refer to the official datasheet for absolute maximum ratings.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.33V at a 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a very low 1.5 µA, ideal for battery-powered devices.
- Q: What package is available?
- A: It comes in a compact 6-DFN (2x2) package.
UM1540DA-30.pdf
- Q: What is the output voltage of the UM1540DA-30?
- A: The fixed output voltage is 3.0V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the datasheet; refer to the official datasheet for absolute maximum ratings.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.33V at a 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a very low 1.5 µA, ideal for battery-powered devices.
- Q: What package is available?
- A: It comes in a compact 6-DFN (2x2) package.
