Richtek USA Inc. RT9078-18GQZ
| 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 |
Request Quote / Inquiry
| 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) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.42V @ 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 RT9078-18GQZ is a precision 300mA low dropout regulator delivering a fixed 1.8V output. With an ultra-low 4 µA quiescent current and excellent 75dB PSRR at 1kHz, it is engineered for battery-powered and noise-sensitive applications. The compact 4-ZQFN (1x1) package makes it perfect for space-constrained designs without compromising performance.
- Ultra-Low Power: 4 µA quiescent current significantly extends battery life in standby mode.
- High Noise Rejection: 75dB PSRR at 1kHz ensures clean output for RF and analog circuits.
- Compact Footprint: 4-ZQFN (1x1) package saves critical board space.
- Reliable Performance: Low dropout voltage of 0.42V at 300mA ensures stable operation.
Portable Medical Devices
The 1.8V rail with 75dB PSRR at 1kHz ensures clean power for sensitive analog front-ends in glucose monitors and pulse oximeters.
Bluetooth Low Energy Modules
Ultra-low 4 µA quiescent current extends battery life in BLE beacons and wearables, while the 1.8V output powers the radio transceiver.
Smart Meters
Provides stable 1.8V for metering ICs and communication modules, with low dropout ensuring operation from battery packs.
Wireless Sensor Nodes
The tiny 4-ZQFN (1x1) package and low power consumption make it ideal for distributed sensor networks.
Portable Gaming Devices
Powers low-voltage logic and memory in handheld consoles, maintaining stable performance during gameplay.
IoT Edge Devices
Combines low quiescent current and high PSRR for reliable operation in always-on connected devices.
- Q: What is the output voltage of the RT9078-18GQZ?
- A: It provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: The maximum output current is 300mA.
- 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: Dropout voltage is 0.42V at 300mA load.
- Q: What is the quiescent current?
- A: Quiescent current is very low at 4 µA.
- Q: What is the PSRR?
- A: PSRR is 75dB at 1kHz, providing excellent noise rejection.
RT9078-18GQZ.pdf
- Q: What is the output voltage of the RT9078-18GQZ?
- A: It provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: The maximum output current is 300mA.
- 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: Dropout voltage is 0.42V at 300mA load.
- Q: What is the quiescent current?
- A: Quiescent current is very low at 4 µA.
- Q: What is the PSRR?
- A: PSRR is 75dB at 1kHz, providing excellent noise rejection.
