Richtek USA Inc. RT9080-28GJ5

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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) 2.8V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.63V @ 600mA
Current - Output 600mA
Current - Quiescent (Iq) 4 µA
Current - Supply (Max) -
PSRR -
Control Features Enable
Protection Features Over Current, Over Temperature, Short Circuit
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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The RT9080-28GJ5 is a fixed 2.8V low dropout linear regulator from Richtek, engineered for power-sensitive portable electronics. It delivers up to 600mA with a dropout of just 0.63V, ensuring stable operation near battery end-of-life. Its exceptional 4µA quiescent current dramatically reduces standby power consumption, making it a top choice for battery-powered devices. Housed in a compact TSOT-23-5 package, it balances thermal performance with minimal PCB footprint.

  • Extended Battery Life: Ultra-low 4µA quiescent current minimizes standby drain, ideal for always-on IoT devices.
  • High Efficiency at Low Dropout: 0.63V dropout at 600mA allows operation closer to battery discharge voltage, maximizing usable energy.
  • Compact Footprint: TSOT-23-5 package saves board space for miniaturized wearable and portable designs.
  • Stable Fixed Output: Precision 2.8V output ensures consistent performance for sensitive digital and RF circuits.

Battery-Powered IoT Sensors

The ultra-low 4µA quiescent current extends battery life in always-on sensing applications, making it ideal for wireless environmental monitors.

Wearable Fitness Trackers

With a compact TSOT-23-5 package and 600mA capability, it powers MCUs and Bluetooth modules in space-constrained wearables while maintaining efficiency.

Portable Medical Devices

Stable 2.8V output with low dropout ensures reliable operation for glucose monitors and pulse oximeters, even as batteries discharge.

Smart Home Hubs

Provides clean, regulated power for Zigbee/Wi-Fi modules, reducing noise-induced communication errors in always-connected devices.

Industrial Sensor Nodes

The low quiescent current and wide operating range support remote industrial sensors powered by energy harvesting or small batteries.

Audio Accessories

Delivers stable 2.8V rail for portable DACs and headphone amplifiers, minimizing ripple for clearer sound reproduction.

Q: What is the output voltage of the RT9080-28GJ5?
A: The fixed output voltage is 2.8V.
Q: What is the maximum output current?
A: It can deliver up to 600mA.
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 0.63V at 600mA load.
Q: What is the quiescent current?
A: The quiescent current is very low at 4µA.
Q: What package is available?
A: It comes in a TSOT-23-5 package.
Base Product Number : RT9080-28GJ5
2.8V 600mA Battery Powered LDO Linear Regulator Low Quiescent Current Richtek TSOT-23-5
Q: What is the output voltage of the RT9080-28GJ5?
A: The fixed output voltage is 2.8V.
Q: What is the maximum output current?
A: It can deliver up to 600mA.
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 0.63V at 600mA load.
Q: What is the quiescent current?
A: The quiescent current is very low at 4µA.
Q: What package is available?
A: It comes in a TSOT-23-5 package.