ETEK MICROELECTRONICS ET551ADJY1B
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.22 | $0.22 |
| 15+ | $0.21 | $3.15 |
| 25+ | $0.21 | $5.25 |
| 50+ | $0.20 | $10.00 |
| 100+ | $0.17 | $17.00 |
| N+ | $0.03 | 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 | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 3.6V |
| 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 ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 6-XFDFN Exposed Pad |
| Supplier Device Package | 6-DFN (1.2x1.2) |
| ROHS |  |
The ET551ADJY1B is a high-performance 3.6V low-dropout linear regulator delivering up to 800mA from an ultra-compact 6-DFN (1.2x1.2mm) package. With a dropout voltage of just 0.3V at full load and a quiescent current of 110µA, it offers excellent efficiency for battery-powered devices. Its 80dB PSRR at 1kHz ensures clean, noise-free output for sensitive applications.
- Ultra-Compact Footprint: 6-DFN (1.2x1.2mm) package saves critical board space in miniaturized designs.
- High Current Density: 800mA output from a tiny package enables powerful functionality in small devices.
- Excellent Noise Rejection: 80dB PSRR at 1kHz provides superior filtering for audio and RF applications.
- Low Dropout: 0.3V dropout at 800mA maximizes efficiency in 5V to 3.6V conversion.
Compact IoT Modules
The 6-DFN package (1.2x1.2mm) is ideal for space-constrained IoT modules. With 800mA output, it can power both the MCU and RF transceiver from a single 5V rail.
LED Flash Drivers
For camera flash applications, the ET551ADJY1B provides 3.6V at 800mA with a low 0.3V dropout, ensuring bright, consistent illumination even as the battery discharges.
Portable Audio Amplifiers
Powering Class-D audio amplifiers at 3.6V, this LDO's 80dB PSRR at 1kHz minimizes power supply noise, delivering clear audio output in portable speakers.
Wearable Health Devices
The tiny DFN package and 110µA quiescent current make it perfect for smartwatches and fitness bands, where board space and battery life are critical.
Wireless Charging Receivers
In wireless charging circuits, this regulator converts the rectified voltage to a stable 3.6V for the load, with low dropout ensuring efficient power transfer.
Industrial Sensor Nodes
For industrial wireless sensors, the 800mA capability supports burst-mode transmissions, while the high PSRR filters out industrial noise from nearby machinery.
- Q: What is the output voltage of the ET551ADJY1B?
- A: It provides a fixed 3.6V output, suitable for powering LEDs, sensors, and low-voltage logic.
- Q: What is the maximum output current?
- A: The maximum output current is 800mA, making it suitable for powering higher-current loads like RF modules and motor drivers.
- Q: What is the input voltage range?
- A: The input voltage range is from 0.8V above the output (approximately 4.4V) up to 5.5V, ideal for 5V supply rails.
- Q: What is the dropout voltage?
- A: The dropout voltage is only 0.3V at 800mA, ensuring high efficiency even with low input-to-output voltage difference.
- Q: What is the quiescent current?
- A: The quiescent current is 110µA, providing low standby power consumption for battery-operated devices.
- Q: What package is available?
- A: It comes in a 6-DFN (1.2x1.2mm) package, one of the smallest footprints for high-current LDOs.
ET551ADJY1B.pdf
- Q: What is the output voltage of the ET551ADJY1B?
- A: It provides a fixed 3.6V output, suitable for powering LEDs, sensors, and low-voltage logic.
- Q: What is the maximum output current?
- A: The maximum output current is 800mA, making it suitable for powering higher-current loads like RF modules and motor drivers.
- Q: What is the input voltage range?
- A: The input voltage range is from 0.8V above the output (approximately 4.4V) up to 5.5V, ideal for 5V supply rails.
- Q: What is the dropout voltage?
- A: The dropout voltage is only 0.3V at 800mA, ensuring high efficiency even with low input-to-output voltage difference.
- Q: What is the quiescent current?
- A: The quiescent current is 110µA, providing low standby power consumption for battery-operated devices.
- Q: What package is available?
- A: It comes in a 6-DFN (1.2x1.2mm) package, one of the smallest footprints for high-current LDOs.
