Richtek USA Inc. RT9166A-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) | 0.58V @ 600mA (Typ) |
| Current - Output | 600mA |
| 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 Richtek RT9166A-18GX is a fixed-output low dropout linear regulator delivering a stable 1.8V supply at up to 600mA. Its low 0.58V dropout voltage and 300 μA quiescent current make it an efficient solution for battery-powered and portable applications. The SOT-89-3 package provides a compact, thermally efficient footprint.
- Precise 1.8V Regulation: Provides a stable output for modern low-voltage digital ICs, ensuring reliable performance.
- High Efficiency: The low dropout voltage reduces power loss, improving overall system efficiency.
- Low Noise Operation: With 55dB PSRR at 1kHz, it effectively filters input ripple, making it suitable for sensitive analog and RF loads.
- Space-Saving Design: The SOT-89-3 package is ideal for compact PCB layouts without compromising thermal performance.
DDR Memory Termination
Provide a clean 1.8V supply for DDR2/DDR3 memory termination and VTT rails, ensuring reliable high-speed data transfer.
Microcontroller I/O and Logic
Many modern microcontrollers operate at 1.8V for their I/O and core logic. This LDO provides a stable, low-noise supply for these devices.
Portable GPS Receivers
Power the GPS baseband processor with a clean 1.8V rail. The 55dB PSRR helps maintain signal integrity in noisy environments.
Battery-Powered Medical Devices
The low quiescent current and compact SOT-89-3 package make it suitable for portable medical monitors and wearable health devices.
Networking Equipment
Use the RT9166A-18GX to power Ethernet PHYs and switches that require a 1.8V supply, ensuring stable operation in communication systems.
- Q: What is the output voltage of the RT9166A-18GX?
- A: The RT9166A-18GX provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: This LDO can deliver up to 600mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the official datasheet for this parameter.
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 0.58V at a 600mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 300 μA.
- Q: What package is available?
- A: This model comes in the SOT-89-3 package.
- Q: What is the output voltage of the RT9166A-18GX?
- A: The RT9166A-18GX provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: This LDO can deliver up to 600mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the official datasheet for this parameter.
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 0.58V at a 600mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 300 μA.
- Q: What package is available?
- A: This model comes in the SOT-89-3 package.

RT9166A-18GX.pdf