Richtek USA Inc. RT9166-18GX
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $94,999.99 | $94,999.99 |
| 15+ | $91,999.99 | $1,379,999.85 |
| 25+ | $89,999.99 | $2,249,999.75 |
| 50+ | $84,999.99 | $4,249,999.50 |
| 100+ | $74,999.99 | $7,499,999.00 |
| N+ | $15,000.00 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Richtek USA Inc. |
| Product Series | |
| Packaging | | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Fixed |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.23V @ 300mA (Typ) |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 300 μA |
| Current - Supply (Max) | - |
| PSRR | 55dB (1kHz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-243AA |
| Supplier Device Package | SOT-89-3 |
| ROHS |  |
The RT9166-18GX is a fixed 1.8V low dropout linear regulator from Richtek, optimized for low-power and space-constrained applications. It delivers up to 300mA with a typical dropout voltage of 0.23V. The quiescent current is 300 μA, and it provides 55dB PSRR at 1kHz for effective noise filtering. Housed in a compact SOT-89-3 package, it is an excellent choice for battery-operated and portable devices.
- Low Dropout Voltage: The 0.23V dropout at 300mA allows efficient regulation from low input voltages.
- Compact SOT-89-3 Package: Saves PCB space while providing good thermal dissipation.
- Good Noise Rejection: 55dB PSRR at 1kHz helps maintain signal integrity in mixed-signal designs.
- Low Power Operation: 300 μA quiescent current is suitable for battery-powered applications.
Microcontroller Power Supply
The fixed 1.8V output is a common requirement for modern microcontrollers and memory chips, making this LDO a direct fit.
Battery-Powered IoT Devices
With a low dropout of 0.23V and 300 μA quiescent current, it efficiently regulates from a 2V battery down to 1.8V, maximizing battery life.
Portable Consumer Electronics
Its compact SOT-89-3 package and stable output make it suitable for MP3 players, digital cameras, and handheld gaming devices.
Sensor Interface Circuits
The 55dB PSRR at 1kHz helps reduce noise from digital circuits, ensuring accurate readings from analog sensors.
Communication Modules
For Bluetooth and Zigbee modules requiring a 1.8V rail, this LDO provides a clean and reliable power source.
Wearable Devices
The low power consumption and small footprint make it ideal for smartwatches and fitness trackers.
- Q: What is the output voltage of the RT9166-18GX?
- A: The RT9166-18GX provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: It can deliver a maximum output current of 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.8V up to the maximum rated input voltage.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.23V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 300 μA.
- Q: What is the PSRR performance?
- A: It offers a PSRR of 55dB at 1kHz, providing good noise suppression.
RT9166-18GX.pdf
- Q: What is the output voltage of the RT9166-18GX?
- A: The RT9166-18GX provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: It can deliver a maximum output current of 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.8V up to the maximum rated input voltage.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.23V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 300 μA.
- Q: What is the PSRR performance?
- A: It offers a PSRR of 55dB at 1kHz, providing good noise suppression.
