ET51618B

Overview

The ET51618B is a linear regulator controller IC manufactured by ETEK Microelectronics. It provides a positive fixed output voltage of 1.8 V with an output current capacity of 300 mA. The device operates within an input voltage range of 1 V to 5.5 V, ensuring reliable performance across this span. It supports a minimum operating temperature of -40 °C and utilizes a surface mount SOT-23-5 package for structural stability.

Feature Summary

• Positive fixed output configuration
• High PSRR and low noise characteristics
• Surface mount SOT-23-5 packaging

Applications

• Low noise power supply systems
• Portable electronic devices requiring stable 1.8V rails
• Embedded systems with strict noise sensitivity requirements

Procurement Notes

Verify the specific manufacturer datasheet for the ET51618B to confirm exact electrical tolerances and thermal specifications. Ensure compatibility with the target PCB layout for the SOT-23-5 package. Cross-reference official documentation from ETEK Microelectronics to validate the 1.8V fixed output and 300mA current rating against your system design requirements before procurement.

Selection Notes

Select the ET51618B when a stable 1.8V output is required with high power supply rejection ratio (PSRR) capabilities. The device is suitable for applications demanding low noise performance within a 1V to 5.5V input range. Consider the SOT-23-5 package size for space-constrained designs requiring surface mount integration.

Part Context

ETEK Microelectronics specializes in high-performance analog integrated circuits. The ET51618B belongs to their linear voltage regulator series, designed to provide efficient and stable power management solutions. This component complements their portfolio of precision analog devices used in various consumer and industrial electronics applications.

Replacement Considerations

Consult official ETEK Microelectronics documentation or authorized distributors for verified substitute part numbers. Do not assume cross-compatibility with other manufacturers' regulators without verifying pinout, voltage, and current specifications.