Richtek USA Inc. RT9198-33GBR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.65 | $0.65 |
| 15+ | $0.63 | $9.45 |
| 25+ | $0.61 | $15.25 |
| 50+ | $0.58 | $29.00 |
| 100+ | $0.51 | $51.00 |
| N+ | $0.10 | 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) | 0.33V @ 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-23-5R |
| ROHS |  |
The RT9198-33GBR from Richtek is a low dropout linear regulator delivering a fixed 3.3V output with up to 300mA of current. Its ultra-low 130 µA quiescent current and high PSRR make it an excellent choice for battery-powered and noise-sensitive applications. Housed in a compact SOT-23-5R package, this LDO offers a dropout voltage of just 0.33V at full load, ensuring efficient operation even with tight input margins.
- Extended Battery Life: Ultra-low 130 µA quiescent current minimizes standby power draw in portable devices.
- Clean Power Delivery: High PSRR (60dB at 100Hz) suppresses supply noise for sensitive analog and RF circuits.
- High Efficiency at Low Dropout: 0.33V dropout at 300mA allows operation from a 3.6V battery down to 3.63V input.
- Compact Footprint: SOT-23-5R package saves PCB space for space-constrained designs.
Battery-Powered Portable Devices
The low 130 µA quiescent current and 300mA output make it ideal for extending battery life in wearables, IoT sensors, and handheld instruments.
Noise-Sensitive Analog Circuits
With PSRR of 60dB at 100Hz and 30dB at 10kHz, it effectively filters supply noise for precision op-amps, ADCs, and audio codecs.
Wireless Communication Modules
Stable 3.3V rail for RF transceivers, Wi-Fi/Bluetooth modules, and microcontrollers, ensuring clean power for reliable signal integrity.
Industrial Sensor Interfaces
Provides a regulated 3.3V supply for pressure, temperature, and proximity sensors in industrial control systems, with low dropout to maximize headroom.
Portable Medical Monitors
Compact SOT-23-5R package and low power consumption suit glucose meters, pulse oximeters, and other battery-operated medical devices.
Automotive Infotainment
Stable output for dashboard cameras, GPS trackers, and display controllers, with dropout low enough to handle cranking voltage dips.
- Q: What is the output voltage of the RT9198-33GBR?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: 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-23-5R package.
RT9198-33GBR.pdf
- Q: What is the output voltage of the RT9198-33GBR?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: 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-23-5R package.
