Richtek USA Inc. RT9166A-20GXL
| 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) | 2V |
| 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-20GXL is a fixed 2.0V LDO regulator capable of delivering 600mA. It features a low 300μA quiescent current and a typical dropout of 0.58V at full load. With 55dB PSRR at 1kHz, it provides clean power for sensitive electronics. The SOT-89-3 package offers a compact, thermally efficient solution.
- Compact Design: The SOT-89-3 package is smaller than SOT-223, saving PCB space while maintaining good thermal performance.
- Low Quiescent Current: The 300μA IQ is ideal for battery-powered applications.
- Excellent Noise Rejection: 55dB PSRR at 1kHz ensures clean power for analog circuits.
- Stable 2.0V Output: Provides a precise fixed output, simplifying power supply design.
Legacy Logic Level Shifting
The 2.0V output is useful for powering older 2V logic families or as an intermediate rail in mixed-voltage systems.
Analog Sensor Power
For precision analog sensors, the 55dB PSRR at 1kHz ensures a clean 2.0V supply, reducing measurement errors.
Portable GPS Receivers
The low quiescent current and stable output make it ideal for powering GPS modules, extending battery life in handheld devices.
Industrial Process Controllers
Provides a reliable 2.0V rail for microcontrollers and interface circuits in industrial control panels.
Consumer Audio Equipment
Can power audio codecs and DSPs requiring a 2.0V supply, with low noise for better sound quality.
Battery Management Systems
In BMS, this LDO can power monitoring ICs, providing a stable 2.0V rail from a higher battery voltage.
- Q: What is the output voltage of the RT9166A-20GXL?
- A: The RT9166A-20GXL provides a fixed output voltage of 2.0V.
- 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 from 2.0V up to a maximum of 5.5V (based on typical LDO specifications).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.58V at a 600mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 300μA, helping to preserve battery life.
- Q: What is the PSRR?
- A: The power supply rejection ratio is 55dB at 1kHz, providing good noise filtering.
- Q: What is the output voltage of the RT9166A-20GXL?
- A: The RT9166A-20GXL provides a fixed output voltage of 2.0V.
- 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 from 2.0V up to a maximum of 5.5V (based on typical LDO specifications).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.58V at a 600mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 300μA, helping to preserve battery life.
- Q: What is the PSRR?
- A: The power supply rejection ratio is 55dB at 1kHz, providing good noise filtering.

RT9166A-20GXL.pdf