ET5H233S

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

The ET5H233S is a linear voltage regulator IC from ETEK MICROELECTRONICS, featuring a positive fixed output of 3.3V and a maximum output current of 300mA. It supports a high input voltage up to 36V with a maximum dropout voltage of 1.3V at full load. The device exhibits a low quiescent current of 4.5 µA and provides a power supply rejection ratio (PSRR) of 60dB at 1kHz. Packaged in SOT-23-3, it includes over-current and over-temperature protection features for reliable operation.

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

• High input voltage capability supporting up to 36V
• Ultra-low quiescent current consumption
• Integrated over-current and over-temperature protection

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

• Battery-powered portable devices
• Consumer electronics requiring stable 3.3V logic levels
• Industrial control systems with high input voltage ranges

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

Verify the exact suffix 'S' corresponds to the SOT-23-3 package and RoHS compliance status as indicated by distributor listings. Confirm that the 3.3V fixed output matches system requirements. Ensure thermal management considerations are addressed given the 300mA output capability and potential power dissipation under high input voltage conditions.

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

Select this component when a fixed 3.3V output is required with high input voltage tolerance up to 36V. The low quiescent current makes it suitable for battery-operated applications where standby power consumption is critical. Verify that the SOT-23-3 package fits the PCB layout constraints and that the 300mA current rating meets the load demands without exceeding thermal limits.

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

The ET5H233S belongs to the ET5H2XX series of high-input voltage, ultra-low quiescent current LDOs manufactured by Wuxi ETEK Microelectronics. This series is designed for analog integrated circuit applications requiring efficient voltage regulation under varying input conditions. The manufacturer focuses on high-performance analog ICs established since 2002.

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

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with other 3.3V, 300mA LDOs only if electrical specifications and pinout compatibility are verified against official datasheets.