ISL9003AIEJZ-T

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

The ISL9003AIEJZ-T is a high-performance single low noise, high PSRR LDO from Intersil that delivers a continuous 150mA load current. It operates with an input voltage range of 2.3V to 6.5V and features extremely low quiescent current of 31µA. The device offers excellent transient response and load regulation with less than 0.1% voltage change across the full load range. It maintains very high PSRR exceeding 90dB at 1kHz and provides low output noise typically of 20µVRMS at 100µA for a 1.5V output. Accuracy is ±1.8% over all operating conditions within a -40°C to +85°C temperature range.

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

• High performance LDO delivering 150mA continuous output current
• Extremely low quiescent current of 31µA with shutdown standby current under 1µA
• Very high PSRR exceeding 90dB at 1kHz and low output noise
• Stable with small ceramic capacitors ranging from 1µF to 4.7µF

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 'IEJZ' against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with required thermal management and PCB layout guidelines for the µTDFN package. Confirm RoHS compliance status and lead-free manufacturing standards prior to integration into production assemblies.

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

Select this component when low noise and high PSRR are critical for sensitive analog or RF circuits in portable devices. The 150mA output capability suits moderate power applications requiring stable voltage rails. Consider the small footprint and low standby current for battery-operated systems where space and efficiency are primary constraints.

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

The ISL9003A belongs to Intersil's portfolio of low dropout regulators designed for portable electronics. It complements other PMIC solutions by providing clean power rails for microprocessors and communication modules. The series emphasizes miniaturization and energy efficiency, aligning with trends in mobile and handheld device design.

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

Check for direct pin-compatible alternatives within the ISL9003 family or comparable LDOs from Renesas. Verify electrical parameter overlaps such as output current, dropout voltage, and stability requirements before substitution.