Richtek USA Inc. RT9198-33GB
| 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 | Active |
| Output Type | Positive |
| Number of Regulators | Fixed |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.33V @ 300mA |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 130 μA |
| Current - Supply (Max) | - |
| PSRR | 60dB ~ 30dB (100Hz ~ 10kHz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| ROHS |  |
The RT9198-33GB from Richtek is a fixed 3.3V low dropout linear regulator delivering up to 300mA. Its ultra-low 130μA quiescent current and high PSRR make it ideal for battery-powered and noise-sensitive applications. Housed in a compact SOT-23-5 package, it provides a stable, clean output rail for portable electronics, RF modules, and industrial sensors.
- Extended Battery Life: Ultra-low 130μA quiescent current minimizes standby power draw in portable devices.
- Clean Output: PSRR of 60dB at 100Hz and 30dB at 10kHz suppresses input ripple for sensitive analog loads.
- Low Dropout: 0.33V dropout at 300mA allows operation from nearly depleted batteries.
- Compact Footprint: SOT-23-5 package saves PCB space for miniaturized designs.
Portable Battery-Powered Devices
The low 130 μA quiescent current extends battery life in wearables, IoT sensors, and handheld instruments where standby efficiency is critical.
Noise-Sensitive Analog Circuits
With PSRR of 60dB at 100Hz and 30dB at 10kHz, this LDO effectively filters power supply ripple for precision op-amps, ADCs, and audio codecs.
RF and Wireless Modules
Stable 3.3V rail with good high-frequency rejection supports Wi-Fi, Bluetooth, and Zigbee modules, reducing spurious emissions and improving receiver sensitivity.
Microcontroller Power Supplies
Fixed 3.3V output directly powers MCUs, eliminating external resistor dividers and reducing BOM count in compact designs.
Industrial Sensor Interfaces
The 300mA capability and low dropout ensure reliable operation from 3.6V Li-ion or 5V rails in industrial transmitters and data loggers.
Space-Constrained PCBs
The SOT-23-5 package minimizes footprint, ideal for dense layouts in smart home devices and portable medical monitors.
- Q: What is the fixed output voltage of the RT9198-33GB?
- A: The RT9198-33GB provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet for full specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.33V at 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 130 μA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
RT9198-33GB.pdf
- Q: What is the fixed output voltage of the RT9198-33GB?
- A: The RT9198-33GB provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet for full specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.33V at 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 130 μA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
