ETEK MICROELECTRONICS ET5H218YB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.11 | $0.11 |
| 15+ | $0.11 | $1.65 |
| 25+ | $0.11 | $2.75 |
| 50+ | $0.10 | $5.00 |
| 100+ | $0.09 | $9.00 |
| N+ | $0.02 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | ETEK MICROELECTRONICS |
| Product Series | ET5H2XX |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 36V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.65V @ 300mA |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 4.5 µA |
| Current - Supply (Max) | - |
| PSRR | 60dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 4-XDFN Exposed Pad |
| Supplier Device Package | 4-DFN (1x1) |
| ROHS |
The ET5H218YB from ETEK Microelectronics is a high-performance low dropout linear regulator delivering a fixed 1.8V output. Capable of sourcing up to 300mA, this LDO features an ultra-low quiescent current of just 4.5 µA, making it ideal for battery-powered and energy-efficient designs. The compact 4-DFN (1x1) package is perfect for space-constrained applications. With a dropout voltage of 1.65V at full load and 60dB PSRR at 1kHz, it provides clean, stable power for sensitive electronics.
- Extended Battery Life: Ultra-low 4.5 µA quiescent current minimizes standby power consumption in portable devices.
- Space-Saving Design: The 4-DFN (1x1) package is one of the smallest available, ideal for compact PCBs.
- Clean Power Delivery: 60dB PSRR at 1kHz filters out noise, ensuring stable operation for sensitive analog and RF circuits.
- High Current Capability: 300mA output supports a wide range of loads, from sensors to microcontrollers.
Battery-Powered IoT Sensors
The ultra-low 4.5 µA quiescent current extends battery life in always-on IoT sensor nodes, while the 300mA output can power wireless transceivers during data bursts.
Portable Medical Devices
The 1.8V rail is ideal for low-power microcontrollers and analog front-ends in wearable health monitors. The small 4-DFN package saves critical board space.
Wearable Electronics
With a 1x1mm DFN package and low dropout of 1.65V, this LDO fits into smartwatches and fitness bands where PCB area is at a premium.
Noise-Sensitive RF Circuits
The 60dB PSRR at 1kHz helps maintain clean power for RF transceivers, reducing spurious emissions and improving signal integrity.
Energy Harvesting Systems
The low quiescent current and 1.8V output make it suitable for systems powered by small solar cells or thermoelectric generators.
Always-On Memory Rails
Maintains a stable 1.8V supply for SRAM or RTC circuits in standby mode, with minimal power draw from the battery.
- Q: What is the output voltage of the ET5H218YB?
- A: The ET5H218YB provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: The maximum output current is 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the technical data; please refer to the datasheet for the absolute maximum and recommended operating conditions.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.65V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 4.5 µA, making it suitable for battery-powered applications.
- Q: What package is available?
- A: The ET5H218YB is available in a compact 4-DFN (1x1) package.
- Q: What is the output voltage of the ET5H218YB?
- A: The ET5H218YB provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: The maximum output current is 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the technical data; please refer to the datasheet for the absolute maximum and recommended operating conditions.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.65V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 4.5 µA, making it suitable for battery-powered applications.
- Q: What package is available?
- A: The ET5H218YB is available in a compact 4-DFN (1x1) package.

ET5H218YB.pdf