Richtek USA Inc. RT9073A-18GQZ
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.58 | $0.58 |
| 15+ | $0.56 | $8.40 |
| 25+ | $0.55 | $13.75 |
| 50+ | $0.52 | $26.00 |
| 100+ | $0.46 | $46.00 |
| N+ | $0.09 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Richtek USA Inc. |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.8V @ 250mA |
| Current - Output | 250mA |
| Current - Quiescent (Iq) | 3 µA |
| Current - Supply (Max) | - |
| PSRR | 75dB (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-ZQFN (1x1) |
| ROHS |  |
The Richtek RT9073A-18GQZ is a low-power LDO regulator providing a fixed 1.8V output at up to 250mA. With a quiescent current of only 3µA and 75dB PSRR at 1kHz, it delivers clean, stable power for battery-operated devices. The ultra-compact 4-ZQFN (1x1mm) package is ideal for space-constrained designs. Dropout voltage is 0.8V at full load.
- Ultra-Small Size: 1x1mm ZQFN package enables miniaturized product designs without sacrificing performance.
- Low Power Consumption: 3µA quiescent current extends battery life in standby and active modes.
- Excellent Noise Rejection: 75dB PSRR at 1kHz provides clean 1.8V supply for RF and analog circuits.
- Reliable Operation: 250mA output current with 0.8V dropout supports a wide range of portable applications.
Compact Wearable Devices
The 1x1mm ZQFN package and 3µA quiescent current make this LDO perfect for smartwatches and fitness bands, providing stable 1.8V for sensors and MCUs while preserving battery.
Bluetooth Low Energy Modules
BLE SoCs require clean 1.8V rails; the RT9073A's 75dB PSRR at 1kHz suppresses RF interference, ensuring reliable wireless communication in beacons and trackers.
Portable Medical Monitors
Low dropout of 0.8V at 250mA allows operation from a 3V coin cell down to 2.6V, powering continuous glucose monitors and pulse oximeters with stable 1.8V.
Smart Home Sensors
Battery-powered door/window sensors benefit from the 3µA quiescent current, extending operational life to years while delivering regulated 1.8V to the sensing element.
IoT Edge Nodes
In distributed sensor networks, the tiny footprint and high efficiency of this regulator enable dense PCB layouts while maintaining clean power for 1.8V logic.
Portable Gaming Accessories
Handheld controllers and VR accessories use the 250mA capability to power haptic drivers and LEDs, with the low dropout ensuring consistent performance as batteries deplete.
- Q: What is the output voltage?
- A: Fixed 1.8V output.
- Q: What is the maximum current?
- A: 250mA maximum output current.
- Q: What is the input voltage range?
- A: Input voltage range is not specified in the provided data; consult the datasheet.
- Q: What is the dropout voltage?
- A: 0.8V at 250mA load.
- Q: What is the quiescent current?
- A: Very low 3µA quiescent current.
- Q: What package is it available in?
- A: Ultra-compact 4-ZQFN (1x1mm) package.
RT9073A-18GQZ.pdf
- Q: What is the output voltage?
- A: Fixed 1.8V output.
- Q: What is the maximum current?
- A: 250mA maximum output current.
- Q: What is the input voltage range?
- A: Input voltage range is not specified in the provided data; consult the datasheet.
- Q: What is the dropout voltage?
- A: 0.8V at 250mA load.
- Q: What is the quiescent current?
- A: Very low 3µA quiescent current.
- Q: What package is it available in?
- A: Ultra-compact 4-ZQFN (1x1mm) package.
