Richtek USA Inc. RT9078-28GQZ
| 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 | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 2.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.23V @ 300mA |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 4 µA |
| Current - Supply (Max) | - |
| PSRR | - |
| Control Features | Current Limit, Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 4-XDFN Exposed Pad |
| Supplier Device Package | 4-ZQFN (1x1) |
| ROHS |  |
The Richtek RT9078-28GQZ is a single-output low dropout regulator providing a fixed 2.8V output with up to 300mA current capability. Its standout feature is an ultra-low quiescent current of just 4 µA, making it one of the most power-efficient LDOs available. Housed in a tiny 4-ZQFN (1x1) package, it is perfect for battery-powered and space-constrained applications.
- Industry-Leading Low IQ: 4 µA quiescent current dramatically extends battery life in standby mode.
- Minimal Dropout: 0.23V at 300mA allows operation from low input voltages, reducing power loss.
- Ultra-Small Size: 1x1mm ZQFN package is ideal for miniaturized designs.
- High Current Density: 300mA output in a 1mm² footprint is exceptional for space-limited applications.
Coin-Cell Powered Devices
The ultra-low 4 µA quiescent current makes this LDO ideal for devices powered by coin cells, maximizing battery life in remote controls and key fobs.
Wearable Health Monitors
With a 1x1mm package and 300mA capability, it can power heart-rate sensors and accelerometers in smartwatches and fitness bands.
IoT Endpoints
Low dropout (0.23V) allows operation from a nearly discharged battery, extending the usable range of IoT sensors.
Portable Instruments
Stable 2.8V output with low quiescent current is suitable for handheld multimeters and thermometers.
Bluetooth Modules
Provides clean power to BLE SoCs, reducing noise and improving radio performance.
Energy Harvesting Systems
Ultra-low quiescent current is critical for systems that rely on harvested energy, where every microamp counts.
- Q: What is the output voltage of the RT9078-28GQZ?
- A: It provides a fixed output of 2.8V.
- 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 up to 2.8V (typical).
- Q: What is the dropout voltage?
- A: Dropout is 0.23V at 300mA.
- Q: What is the quiescent current?
- A: The quiescent current is extremely low at 4 µA.
- Q: What package is available?
- A: It comes in a 4-ZQFN (1x1) package.
RT9078-28GQZ.pdf
- Q: What is the output voltage of the RT9078-28GQZ?
- A: It provides a fixed output of 2.8V.
- 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 up to 2.8V (typical).
- Q: What is the dropout voltage?
- A: Dropout is 0.23V at 300mA.
- Q: What is the quiescent current?
- A: The quiescent current is extremely low at 4 µA.
- Q: What package is available?
- A: It comes in a 4-ZQFN (1x1) package.
