Richtek USA Inc. RT9078-12GJ5
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.56 | $0.56 |
| 15+ | $0.54 | $8.10 |
| 25+ | $0.53 | $13.25 |
| 50+ | $0.50 | $25.00 |
| 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) | 1.2V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.57V @ 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 | SOT-23-5 Thin, TSOT-23-5 |
| Supplier Device Package | TSOT-23-5 |
| ROHS |  |
The RT9078-12GJ5 from Richtek is a fixed 1.2V LDO delivering 300mA. Its standout feature is an ultra-low 4 µA quiescent current, making it perfect for battery-powered and energy-harvesting applications. The TSOT-23-5 package is compact, and 75dB PSRR ensures clean output.
- Ultra-Low Quiescent Current: 4 µA extends battery life dramatically in standby and always-on applications.
- High Efficiency at Light Load: Minimal ground current improves efficiency at microamp loads.
- High PSRR: 75dB at 1kHz filters switching noise, ideal for sensitive circuits.
- Small Package: TSOT-23-5 saves space in portable and wearable designs.
Ultra-Low-Power IoT Nodes
The 4 µA quiescent current is ideal for energy-harvesting and coin-cell powered devices, enabling years of operation on a single battery.
Microcontroller Core Supply
1.2V output powers low-voltage MCUs and SoCs, with 300mA supporting active processing and wireless transmission bursts.
Wearable Health Monitors
Minimal current draw extends battery life in smartwatches and fitness bands, while small TSOT-23-5 package fits slim designs.
RTC Backup Power
Provides stable 1.2V for real-time clocks and SRAM backup, with ultra-low quiescent current preserving battery during main power loss.
Sensor Signal Conditioning
Powers low-voltage analog front-ends, with 75dB PSRR at 1kHz rejecting noise from digital logic.
Portable Instruments
Reliable 1.2V rail for calibration circuits and measurement probes, ensuring accuracy in field use.
- Q: What is the output voltage?
- A: Fixed 1.2V output.
- Q: What is the maximum current?
- A: 300mA maximum output current.
- Q: What is the input voltage range?
- A: Not specified in provided data; consult the datasheet.
- Q: What is the dropout voltage?
- A: 0.57V at 300mA load.
- Q: What is the quiescent current?
- A: Ultra-low 4 µA quiescent current.
- Q: What package is it?
- A: TSOT-23-5 package.
RT9078-12GJ5.pdf
- Q: What is the output voltage?
- A: Fixed 1.2V output.
- Q: What is the maximum current?
- A: 300mA maximum output current.
- Q: What is the input voltage range?
- A: Not specified in provided data; consult the datasheet.
- Q: What is the dropout voltage?
- A: 0.57V at 300mA load.
- Q: What is the quiescent current?
- A: Ultra-low 4 µA quiescent current.
- Q: What package is it?
- A: TSOT-23-5 package.
