Richtek USA Inc. RT9166A-15GG
| 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 |
Request Quote / Inquiry
| 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) | 1.5V |
| 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-261-4, TO-261AA |
| Supplier Device Package | SOT-223 |
| ROHS |
The Richtek RT9166A-15GG is a fixed 1.5V 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-223 package ensures good thermal performance.
- Low Quiescent Current: The 300μA IQ is ideal for battery-powered devices, reducing idle power draw.
- Good Noise Rejection: 55dB PSRR at 1kHz filters out power supply noise, protecting sensitive analog circuits.
- Robust Package: The SOT-223 package offers excellent thermal dissipation for reliable operation up to 600mA.
- Stable Fixed Output: Provides a precise 1.5V rail without external resistor dividers.
Digital Core Power for MCUs
The 1.5V output and 600mA current capability are ideal for powering the core of modern microcontrollers, ensuring stable operation during processing bursts.
FPGA Auxiliary Rails
Many FPGAs require a 1.5V auxiliary rail; this LDO provides a clean, low-noise supply with 55dB PSRR at 1kHz, reducing interference.
Portable Instrumentation
The low 300μA quiescent current extends battery life in handheld multimeters and signal analyzers, while the SOT-223 package aids thermal management.
Communication Interface Power
For RS-232 or CAN transceivers needing a 1.5V logic supply, this regulator offers a simple, reliable solution with low dropout.
LED Display Drivers
In LED matrix displays, the RT9166A-15GG can power the logic section, providing a stable 1.5V rail from a 3.3V system supply.
Industrial Control Systems
The robust SOT-223 package and 600mA output make it suitable for powering sensors and control logic in industrial automation.
- Q: What is the output voltage of the RT9166A-15GG?
- A: The RT9166A-15GG provides a fixed output voltage of 1.5V.
- 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 1.5V 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-15GG?
- A: The RT9166A-15GG provides a fixed output voltage of 1.5V.
- 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 1.5V 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-15GG.pdf