3PEAK TPL503128-S5TR

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Product attributes Property Value
Manufacturer 3PEAK
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) 0.34V @ 300mA
Current - Output 300mA
Current - Quiescent (Iq) -
Current - Supply (Max) -
PSRR 70dB ~ 54dB (1kHz ~ 1MHz)
Control Features Enable
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C (TJ)
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 TPL503128-S5TR is a fixed 2.8V low dropout linear regulator from 3PEAK, rated for 300mA output current. It features a dropout voltage of 0.34V at full load and excellent PSRR of 70dB to 54dB from 1kHz to 1MHz. The SOT-23-5 package makes it suitable for compact, high-performance power management.

  • Higher Current Capacity: 300mA output supports more demanding loads than typical 200mA LDOs.
  • Excellent Ripple Rejection: 70dB PSRR at 1kHz ensures clean power for analog and RF circuits.
  • Reasonable Dropout: 0.34V at 300mA balances efficiency and headroom.
  • Compact Package: SOT-23-5 enables dense PCB layouts.

High-Current Sensor Arrays

With 300mA output capability, this LDO can power multiple sensors (e.g., temperature, humidity, pressure) simultaneously from a single 2.8V rail in industrial data loggers.

RF Power Amplifiers

The high PSRR of 70dB at 1kHz ensures a clean supply for RF PA drivers, reducing spurious emissions in 2.4GHz ISM band transmitters.

Battery-Powered Cameras

The 0.34V dropout at 300mA allows efficient operation from a 3.7V Li-ion battery, providing stable 2.8V for image sensors and DSPs.

Portable Gaming Consoles

This regulator supports the higher current demands of gaming controllers and handheld consoles, delivering stable 2.8V for logic and display drivers.

Medical Monitoring Patches

The SOT-23-5 package and 300mA current capability make it suitable for wearable ECG/EEG patches that require a stable 2.8V supply for analog front-ends.

Q: What is the output voltage?
A: The fixed output voltage is 2.8V.
Q: What is the maximum output current?
A: It can provide up to 300mA of output current.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; please refer to the datasheet.
Q: What is the dropout voltage?
A: The dropout voltage is 0.34V at a 300mA load.
Q: What is the quiescent current?
A: The quiescent current is not specified in the provided data.
Q: What package is available?
A: This LDO is available in a SOT-23-5 package.
Base Product Number : TPL503128-S5
2.8V 300mA 3PEAK Fixed Output High PSRR LDO Linear Regulator SOT-23-5
Q: What is the output voltage?
A: The fixed output voltage is 2.8V.
Q: What is the maximum output current?
A: It can provide up to 300mA of output current.
Q: What is the input voltage range?
A: The input voltage range is not specified in the provided data; please refer to the datasheet.
Q: What is the dropout voltage?
A: The dropout voltage is 0.34V at a 300mA load.
Q: What is the quiescent current?
A: The quiescent current is not specified in the provided data.
Q: What package is available?
A: This LDO is available in a SOT-23-5 package.