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Product attributes Property Value
Manufacturer Torex Semiconductor Ltd
Product Series
Packaging Tape & Reel (TR) |
Output Configuration Active
Output Type Positive
Number of Regulators Fixed
Voltage - Input (Max) 6V
Voltage - Output (Min/Fixed) 3.9V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.655V @ 1A
Current - Output 1A
Current - Quiescent (Iq) 18 μA
Current - Supply (Max) 108 μA
PSRR 50dB (1kHz)
Control Features Enable
Protection Features Over Current, Over Temperature
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 6-UFDFN Exposed Pad
Supplier Device Package 6-USPC (1.8x2)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Torex XC6220A391ER-G is a fixed-output LDO regulator delivering a precise 3.9V at up to 1A. Its ultra-low 18 μA quiescent current and 0.655V dropout voltage make it ideal for battery-operated devices. The 6-USPC package offers a compact footprint, while 50dB PSRR ensures clean power for noise-sensitive circuits.

  • Extended Battery Life: Ultra-low 18 μA quiescent current minimizes standby power draw in portable devices.
  • High Current Capacity: 1A output supports demanding loads like wireless modules and sensors.
  • Low Dropout: 0.655V dropout at 1A enables efficient operation from batteries with minimal headroom.
  • Compact Footprint: 6-USPC (1.8x2) package saves PCB space for miniaturized designs.
  • Clean Output: 50dB PSRR at 1kHz reduces supply noise for sensitive analog circuits.

High-Performance Audio DACs

The 3.9V output with 50dB PSRR provides a clean analog supply for high-end portable audio DACs, reducing distortion and noise.

Battery-Powered GPS Trackers

Low 18 μA quiescent current extends battery life in GPS trackers, while 1A capacity supports GPS module and cellular communication peaks.

Industrial Control Systems

Stable 3.9V rail for PLCs and industrial sensors, with low dropout ensuring reliable operation from 5V buses.

Portable Test Equipment

Compact 6-USPC package and high current capability make it ideal for oscilloscopes and signal generators in the field.

Wireless Charging Receivers

Efficient 3.9V output for power management in wireless charging receivers, maintaining stable voltage under varying load conditions.

Smart Home Devices

Reliable power for smart thermostats and security cameras, with low quiescent current for always-on operation.

Q: What is the output voltage of the XC6220A391ER-G?
A: This fixed-output LDO provides a stable 3.9V output.
Q: What is the maximum output current?
A: It can deliver up to 1A of continuous output current.
Q: What is the input voltage range?
A: The input voltage is 3.9V, designed for a regulated 3.9V output with proper headroom.
Q: What is the dropout voltage?
A: The dropout voltage is 0.655V at a 1A load, ensuring efficient operation near the dropout threshold.
Q: What is the quiescent current?
A: The quiescent current is a low 18 μA, making it suitable for battery-powered applications.
Q: What package is available?
A: It comes in a compact 6-USPC (1.8x2) package, ideal for space-constrained designs.
Base Product Number : XC6220A391ER
1A 3.9V 6-USPC Fixed Output LDO Linear Regulator Low Quiescent Current Torex
Q: What is the output voltage of the XC6220A391ER-G?
A: This fixed-output LDO provides a stable 3.9V output.
Q: What is the maximum output current?
A: It can deliver up to 1A of continuous output current.
Q: What is the input voltage range?
A: The input voltage is 3.9V, designed for a regulated 3.9V output with proper headroom.
Q: What is the dropout voltage?
A: The dropout voltage is 0.655V at a 1A load, ensuring efficient operation near the dropout threshold.
Q: What is the quiescent current?
A: The quiescent current is a low 18 μA, making it suitable for battery-powered applications.
Q: What package is available?
A: It comes in a compact 6-USPC (1.8x2) package, ideal for space-constrained designs.