Richtek USA Inc. RT9166A-12PG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.39 | $1.39 |
| 15+ | $1.34 | $20.10 |
| 25+ | $1.31 | $32.75 |
| 50+ | $1.24 | $62.00 |
| 100+ | $1.10 | $110.00 |
| N+ | $0.22 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Richtek USA Inc. |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.58V @ 600mA |
| Current - Output | 600mA |
| Current - Quiescent (Iq) | 300 µA |
| Current - Supply (Max) | - |
| PSRR | 55dB (1kHz) |
| Control Features | Current Limit |
| 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 RT9166A-12PG is a fixed 1.2V LDO regulator from Richtek, delivering up to 600mA with a low dropout of 0.58V. In a SOT-223 package, it features 300µA quiescent current and 55dB PSRR at 1kHz, making it suitable for battery-powered and low-voltage digital applications.
- High Current (600mA): Supports demanding low-voltage loads in compact form.
- Low Dropout (0.58V @ 600mA): Maximizes efficiency when input is close to output.
- Low Quiescent Current (300µA): Extends battery life in portable devices.
- SOT-223 Package: Easy to solder with good thermal performance for its size.
Low-Voltage Digital Core Supply
Provides a stable 1.2V rail for FPGA or ASIC cores up to 600mA, with low dropout (0.58V) allowing operation from 1.8V rails.
Portable Media Players
Powers 1.2V logic or memory in handheld devices, with 300µA quiescent current preserving battery life.
Wireless Modules
Supplies 1.2V to RF transceivers or baseband processors, with 55dB PSRR at 1kHz reducing interference.
Set-Top Boxes
Regulates 1.8V down to 1.2V for SoC cores, with SOT-223 package handling moderate heat.
Industrial Sensors
Provides a clean 1.2V reference for low-voltage analog circuits, ensuring accurate readings.
LED Driver Logic
Powers control logic in LED drivers, maintaining stable operation under varying input.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.2V.
- Q: What is the maximum output current?
- A: It can supply up to 600mA.
- Q: What is the input voltage range?
- A: The input voltage is 1.2V (typical operating condition).
- Q: What is the dropout voltage?
- A: Dropout is 0.58V at 600mA load.
- Q: What is the quiescent current?
- A: Quiescent current is 300µA.
- Q: What package is available?
- A: It comes in a SOT-223 package.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.2V.
- Q: What is the maximum output current?
- A: It can supply up to 600mA.
- Q: What is the input voltage range?
- A: The input voltage is 1.2V (typical operating condition).
- Q: What is the dropout voltage?
- A: Dropout is 0.58V at 600mA load.
- Q: What is the quiescent current?
- A: Quiescent current is 300µA.
- Q: What package is available?
- A: It comes in a SOT-223 package.

RT9166A-12PG.pdf