Richtek USA Inc. RT9198-18GU5R
| 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) | 1.8V |
| 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 | 5-TSSOP, SC-70-5, SOT-353 |
| Supplier Device Package | SC-70-5R |
| ROHS |  |
The RT9198-18GU5R is a fixed 1.8V low dropout linear regulator from Richtek, designed to deliver 300mA with a low quiescent current of 130 μA. Its compact SC-70-5R package and stable output make it an excellent power solution for digital cores, memory interfaces, and other noise-sensitive portable applications.
- Stable Low-Voltage Rail: Provides a precise 1.8V output, essential for modern digital ICs and memory termination.
- Low Power Consumption: 130 μA quiescent current helps maximize battery life in standby mode.
- Compact Footprint: The SC-70-5R package is ideal for space-limited PCB designs.
- Reliable Performance: Low dropout of 0.33V ensures efficient operation even with small input-output voltage margins.
FPGA Core Supply
The fixed 1.8V output is perfect for powering the core logic of low-power FPGAs and CPLDs, providing a stable and clean voltage rail.
DDR Memory Termination
With 300mA capability and low dropout, it can supply the VTT rail for DDR2/DDR3 memory interfaces, ensuring signal integrity.
Digital Signal Processors (DSP)
Many DSPs require a 1.8V I/O or core supply; this LDO delivers the required current with minimal noise.
Battery-Powered Handheld Tools
The low quiescent current and 1.8V output help maintain efficiency in battery-operated measurement and calibration tools.
Optical Transceivers
Provides a clean 1.8V supply for laser driver circuits in SFP modules, where noise can affect signal quality.
Portable Gaming Consoles
Powers the 1.8V logic rail in handheld gaming devices, balancing performance with battery conservation.
- Q: What is the output voltage of the RT9198-18GU5R?
- A: This LDO provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: It can supply up to 300mA of output current.
- Q: What is the input voltage range?
- A: The input voltage must be higher than 1.8V plus dropout; typical maximum is 5.5V. Check the datasheet for exact specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.33V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 130 μA.
- Q: What package is this device available in?
- A: It is available in the SC-70-5R package.
RT9198-18GU5R.pdf
- Q: What is the output voltage of the RT9198-18GU5R?
- A: This LDO provides a fixed output voltage of 1.8V.
- Q: What is the maximum output current?
- A: It can supply up to 300mA of output current.
- Q: What is the input voltage range?
- A: The input voltage must be higher than 1.8V plus dropout; typical maximum is 5.5V. Check the datasheet for exact specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.33V at a 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 130 μA.
- Q: What package is this device available in?
- A: It is available in the SC-70-5R package.
