ET53125YB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The ET53125YB is a linear voltage regulator IC from ETEK Microelectronics, featuring a positive fixed output. It delivers an output current of 300mA and operates within an input voltage range of 4V to 5.5V. The device utilizes a 4-DFN (1x1) package. Designed for low dropout applications, it incorporates advanced CMOS technology with a PMOSFET pass element to ensure stable regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low noise performance suitable for sensitive RF and analog circuitry
• High power supply rejection ratio (PSRR) for effective noise filtering
• Low quiescent ground current of 15μA for energy efficiency

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• RF circuits requiring clean power supplies
• Analog signal processing stages
• Portable electronic devices with battery constraints

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the manufacturer designation as ETEK Microelectronics or Wuxi ETEK Micro-Electronics Co., Ltd. when sourcing. Confirm the specific suffix YB corresponds to the 4-DFN (1x1) package variant. Ensure compatibility with the required 300mA load current and 4V minimum input voltage before integration into the design.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for designs prioritizing low noise and high PSRR in compact form factors. The 4-DFN package suits space-constrained PCB layouts. Verify that the application does not exceed the 300mA output limit. Consider thermal dissipation requirements based on the voltage drop across the regulator under maximum load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the ET531XXYB series of low dropout regulators. The series shares common architectural features including CMOS/PMOSFET construction and ultra-low noise characteristics. Other variants in the family differ primarily in fixed output voltage settings while maintaining similar current handling and package dimensions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the 300mA current rating, 4-DFN package, and low-noise LDO specifications from other manufacturers.