ETEK MICROELECTRONICS ET551105YB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.15 | $0.15 |
| 15+ | $0.15 | $2.25 |
| 25+ | $0.14 | $3.50 |
| 50+ | $0.14 | $7.00 |
| 100+ | $0.12 | $12.00 |
| N+ | $0.02 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | ETEK MICROELECTRONICS |
| Product Series | ET551XX |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.05V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.3V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 110 µA |
| Current - Supply (Max) | - |
| PSRR | 80dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Under Voltage Lockout (UVLO) |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 4-XFDFN Exposed Pad |
| Supplier Device Package | 4-DFN (1.2x1.2) |
| ROHS |  |
The ET551105YB is a fixed 1.05V low dropout linear regulator designed for modern low-voltage applications. With a maximum output current of 800mA and an ultra-low dropout voltage of just 0.3V at full load, it is ideal for powering processor cores and memory interfaces. The 4-DFN (1.2x1.2mm) package is one of the smallest available, making it perfect for space-constrained designs. With a quiescent current of 110 µA and PSRR of 80dB at 1kHz, this regulator delivers clean and efficient power.
- Ultra-Low Dropout: 0.3V at 800mA enables operation from very low input voltages.
- Exceptional PSRR: 80dB at 1kHz provides superior noise filtering for sensitive low-voltage circuits.
- Ultra-Compact Package: 4-DFN (1.2x1.2mm) saves critical PCB space.
- High Current Density: 800mA in a tiny package supports powerful processors.
Modern Processor Cores
Powers 1.05V core voltages for application processors and SoCs. The 800mA current capability supports high-performance mobile chips.
Mobile Devices
Ideal for smartphones and tablets where space is at a premium. The tiny 4-DFN package (1.2x1.2mm) fits ultra-compact PCBs.
FPGA Core Supplies
Provides the low-voltage core rail for FPGAs. The 0.3V dropout allows efficient operation from 1.35V input.
DDR4 Memory VDDQ
Supplies 1.05V for DDR4 memory termination. The high PSRR of 80dB at 1kHz ensures stable memory operation.
Wearable Devices
Powers low-voltage processors in smartwatches and AR glasses. The small package and low quiescent current extend battery life.
High-Density Computing
Used in servers and networking equipment for low-voltage rails. The high PSRR and low dropout ensure reliable operation.
- Q: What is the output voltage of the ET551105YB?
- A: The fixed output voltage is 1.05V.
- Q: What is the maximum output current?
- A: It can deliver up to 800mA of output current.
- Q: What is the input voltage range?
- A: The input voltage must be above 1.05V plus dropout; typically 1.35V or higher.
- Q: What is the dropout voltage?
- A: The dropout voltage is very low at 0.3V at 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 110 µA.
- Q: What package is available?
- A: It comes in a compact 4-DFN (1.2x1.2mm) package.
ET551105YB.pdf
- Q: What is the output voltage of the ET551105YB?
- A: The fixed output voltage is 1.05V.
- Q: What is the maximum output current?
- A: It can deliver up to 800mA of output current.
- Q: What is the input voltage range?
- A: The input voltage must be above 1.05V plus dropout; typically 1.35V or higher.
- Q: What is the dropout voltage?
- A: The dropout voltage is very low at 0.3V at 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 110 µA.
- Q: What package is available?
- A: It comes in a compact 4-DFN (1.2x1.2mm) package.
