Richtek USA Inc. RT9078-33GQZ
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.55 | $0.55 |
| 15+ | $0.53 | $7.95 |
| 25+ | $0.52 | $13.00 |
| 50+ | $0.49 | $24.50 |
| 100+ | $0.44 | $44.00 |
| N+ | $0.09 | 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) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.22V @ 300mA |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 4 µA |
| Current - Supply (Max) | - |
| PSRR | 75dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 4-XDFN Exposed Pad |
| Supplier Device Package | 4-ZQFN (1x1) |
| ROHS |  |
The Richtek RT9078-33GQZ is a fixed 3.3V low dropout linear regulator capable of delivering up to 300mA. It features an ultra-low 4µA quiescent current and a low 0.22V dropout at full load. With a PSRR of 75dB at 1kHz, it provides excellent noise suppression for sensitive electronics. The device is housed in a compact 4-ZQFN (1x1mm) package, making it suitable for high-density, battery-powered applications.
- Ultra-Low Quiescent Current: 4µA IQ significantly extends battery life in standby mode.
- High Output Current: 300mA capability supports demanding loads like RF transceivers.
- Excellent PSRR: 75dB at 1kHz ensures clean output for noise-sensitive circuits.
- Minimal Footprint: 4-ZQFN (1x1mm) is one of the smallest packages available.
Battery-Powered Industrial Sensors
The RT9078-33GQZ combines 300mA capability with 4µA quiescent current, making it ideal for industrial wireless sensors that need high current bursts for radio transmission and ultra-low standby.
Portable Medical Devices
With 75dB PSRR at 1kHz, it provides clean power for sensitive medical monitoring circuits, ensuring accurate readings in glucose meters and blood pressure monitors.
Smart Home Automation
For battery-operated smart locks and thermostats, the low dropout of 0.22V maximizes battery utilization, while the 300mA output supports motor drivers and wireless modules.
GPS and Tracking Devices
The compact 4-ZQFN (1x1mm) package fits into asset trackers, providing a stable 3.3V rail for GPS receivers and cellular modems with excellent noise rejection.
Wearable Health Monitors
Its ultra-low quiescent current extends battery life in continuous heart-rate and SpO2 monitoring, while the high PSRR prevents display and motor noise from affecting sensor accuracy.
- Q: What is the output voltage of the RT9078-33GQZ?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA 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 datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.22V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is very low at 4µA.
- Q: What is the PSRR?
- A: The PSRR is 75dB at 1kHz.
RT9078-33GQZ.pdf
- Q: What is the output voltage of the RT9078-33GQZ?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA 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 datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.22V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is very low at 4µA.
- Q: What is the PSRR?
- A: The PSRR is 75dB at 1kHz.
