ISL9003AIEMZ-T

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

The ISL9003AIEMZ-T is a single-output fixed linear low-dropout regulator (LDO) manufactured by Intersil. It provides a fixed output voltage of 2.5V with a maximum continuous load current of 150mA. The device operates within an input voltage range of 2.3V to 6.5V and features extremely low quiescent current of 40µA. Key electrical parameters include a maximum dropout voltage of 0.4V at full load, high power supply rejection ratio exceeding 90dB at 1kHz, and output noise typically around 20µVRMS. It incorporates protection mechanisms including overcurrent limiting, thermal shutdown, soft-start, and under-voltage lockout.

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

• High performance LDO delivering 150mA continuous output with excellent transient response
• Extremely low quiescent current for extended battery life in portable applications
• High PSRR exceeding 90dB at 1kHz for clean power supply regulation
• Integrated protection features including current limit, thermal shutdown, and soft-start

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

• PDAs, Cell Phones and Smart Phones
• Portable Instruments and MP3 Players
• Handheld Devices Including Medical Handhelds

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

Verify the specific suffix 'IEFZ' versus 'IEMZ' against official datasheets, as package variations exist. Confirm RoHS compliance status and lead times directly with Renesas or authorized distributors. Ensure ESD handling protocols are followed during assembly due to the small SC-70-5 package. Check for moisture sensitivity levels prior to soldering.

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

Select this component when low noise and high PSRR are critical for sensitive analog circuits. The fixed 2.5V output suits digital logic supplies or reference voltages. Verify that the required load current does not exceed 150mA. Consider the SC-70-5 package constraints for PCB layout and thermal dissipation requirements in compact designs.

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

This part belongs to the ISL9003A family of low-noise LDO regulators designed for portable electronics. It shares architectural similarities with other Intersil LDOs but is distinguished by its specific 2.5V fixed output and 150mA current capability. The device is optimized for applications requiring stable power delivery with minimal static power consumption.

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

Direct substitutes may include other Intersil/Renesas LDOs with similar 150mA ratings and low noise profiles, such as the ISL9008 series, though output voltage and package differences must be verified.