Richtek USA Inc. RT9198-50GB

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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) 5V
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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The RT9198-50GB is a fixed 5V LDO regulator from Richtek, delivering 300mA with a low dropout of 0.33V. Its 130 μA quiescent current is ideal for battery-operated and USB-powered devices. The device offers excellent PSRR (60dB at 100Hz) for noise-sensitive applications. Packaged in SOT-23-5, it provides a compact power solution.

  • Standard 5V Output: Directly compatible with common logic and analog circuits.
  • Low Dropout: 0.33V dropout ensures stable 5V even from 5.3V input sources.
  • Low Power Consumption: 130 μA quiescent current extends battery life in portable devices.
  • Excellent Ripple Rejection: 60dB PSRR at 100Hz filters supply noise for clean output.

5V Logic and Peripheral Power

Provides a clean, regulated 5V rail for microcontrollers, sensors, and peripheral ICs in mixed-voltage systems.

USB-Powered Devices

Ideal for devices powered from USB 5V bus, offering low dropout to maintain 5V output even with cable losses.

Audio Amplifier Bias

Low noise and high PSRR make it suitable for powering op-amps and audio codecs requiring a 5V supply.

Industrial Sensor Interfaces

Stable 5V output for industrial sensors and transmitters operating in noisy factory environments.

Battery-Powered 5V Systems

For devices using 2-3 Li-ion cells or 6V adapters, the low dropout ensures efficient 5V regulation.

FPGA I/O Banks

Provides a dedicated 5V rail for legacy I/O standards in FPGA and CPLD designs.

Q: What is the output voltage of the RT9198-50GB?
A: The fixed output voltage is 5V.
Q: What is the maximum output current?
A: This LDO can supply up to 300mA.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; please check the datasheet.
Q: What is the dropout voltage?
A: Dropout voltage is 0.33V at 300mA.
Q: What is the quiescent current?
A: Quiescent current is 130 μA.
Q: What package is this?
A: It comes in the SOT-23-5 package.
Base Product Number : RT9198-50
300mA 5V High PSRR LDO Linear Regulator Low Dropout Low Quiescent Current Richtek RT9198 SOT-23-5
Q: What is the output voltage of the RT9198-50GB?
A: The fixed output voltage is 5V.
Q: What is the maximum output current?
A: This LDO can supply up to 300mA.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; please check the datasheet.
Q: What is the dropout voltage?
A: Dropout voltage is 0.33V at 300mA.
Q: What is the quiescent current?
A: Quiescent current is 130 μA.
Q: What package is this?
A: It comes in the SOT-23-5 package.