Union Semiconductor International Limited UM1540DA-33
| 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 |
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| 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) | 3.3V |
| 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-33 is a low dropout linear regulator from Union Semiconductor, delivering a fixed 3.3V output with up to 300mA of current. It features an ultra-low quiescent current of 1.5 µA, ideal for battery-powered applications. The dropout voltage is a low 0.33V at 200mA, maximizing efficiency. Housed in a 6-DFN (2x2) package, it offers a compact solution with good thermal dissipation for various electronic applications.
- Low Power Loss: The 1.5 µA quiescent current significantly reduces power consumption in standby mode, extending battery life.
- Stable Output: Provides a precise 3.3V output with low dropout, ensuring reliable performance for sensitive electronics.
- Compact Package: The 6-DFN (2x2) package is space-efficient while allowing adequate heat dissipation.
- Noise Rejection: PSRR of 56dB to 42dB (100Hz-1kHz) filters out power supply noise, protecting sensitive loads.
Industrial Sensor Interfaces
The 6-DFN (2x2) package offers a balance of size and thermal performance, making it suitable for industrial sensors requiring a stable 3.3V supply.
Portable Test Equipment
With 300mA output and low noise, this LDO powers precision analog circuits in handheld multimeters and oscilloscopes, ensuring accurate measurements.
Wireless Infrastructure
The PSRR of 56dB to 42dB helps maintain a clean 3.3V rail for communication modules in base stations and routers.
Automotive Electronics
This regulator provides reliable 3.3V power for infotainment systems and sensors, with robust thermal performance for under-hood environments.
Medical Devices
Low quiescent current and stable output make it ideal for portable medical devices like insulin pumps and digital thermometers.
Consumer Audio
Powering DACs and amplifiers in portable audio players, the UM1540DA-33 ensures low noise and high-fidelity sound reproduction.
- Q: What is the output voltage of the UM1540DA-33?
- A: The fixed output voltage is 3.3V.
- 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 6-DFN (2x2) package.
UM1540DA-33.pdf
- Q: What is the output voltage of the UM1540DA-33?
- A: The fixed output voltage is 3.3V.
- 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 6-DFN (2x2) package.
