Richtek USA Inc. RT9166-33GXL
| 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) | 3.3V |
| 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 RT9166-33GXL from Richtek is a fixed 3.3V LDO regulator offering 300mA output current. With a typical dropout of 0.23V at full load and 300 μA quiescent current, it balances efficiency and performance. The SOT-89-3 package enhances heat dissipation for demanding applications.
- Enhanced Thermal Performance: SOT-89-3 package dissipates heat better than smaller packages.
- Low Dropout: 0.23V typical at 300mA maximizes efficiency.
- Low Quiescent Current: 300 μA for battery-friendly operation.
- Good Noise Rejection: 55dB PSRR at 1kHz for clean output.
Industrial Control Systems
The SOT-89-3 package provides better thermal performance for 300mA continuous loads in industrial controllers.
3.3V Sensor Power
Stable output with 55dB PSRR at 1kHz ensures accurate readings from analog sensors.
Battery-Powered Tools
Low dropout and quiescent current make it suitable for cordless tools with microcontroller-based control.
Networking Equipment
Provides clean 3.3V power for Ethernet PHY and switch ICs.
Automotive Accessories
Reliable 3.3V regulation for infotainment and telematics modules (if within automotive temp range).
LED Drivers
Can power control logic in LED lighting systems, ensuring consistent brightness.
- Q: What is the output voltage of the RT9166-33GXL?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: Typical dropout is 0.23V at 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 300 μA.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
- Q: What is the output voltage of the RT9166-33GXL?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: Typical dropout is 0.23V at 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 300 μA.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.

RT9166-33GXL.pdf