ISL9007IUJZ

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

The ISL9007IUJZ is a high-performance low-dropout (LDO) voltage regulator manufactured by Intersil. It delivers a continuous output current of 400mA with a fixed 3.3V output option. The device operates within an input voltage range of 2.3V to 6.5V and features a typical dropout voltage of 200mV at full load. It incorporates a shutdown pin that reduces standby current to a maximum of 1µA. The regulator provides high power supply rejection ratio (PSRR) of 75dB at 1kHz and maintains low output noise below 30µVRMS. It includes built-in thermal overload and current limit protection, ensuring stability with ceramic capacitors between 1µF and 10µF.

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

• High performance LDO delivering 400mA continuous output current
• Very high PSRR of 75dB at 1kHz for effective noise rejection
• Low quiescent current of 50µA with 1µA maximum shutdown current
• Integrated soft-start, current limit, and thermal overload protection

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

• Portable wireless equipment such as PDAs and cell phones
• Handheld medical devices and portable instruments
• MP3 players and other battery-powered consumer electronics

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

Verify the specific suffix against official documentation to confirm package type and temperature grade. Confirm availability status as older Intersil parts may be discontinued or subject to limited production runs. Ensure compatibility with required output capacitance values for stability.

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

Select this component when a fixed 3.3V output is required with high current capability. Consider the MSOP-8 package constraints for PCB layout. Verify input voltage ranges align with the source supply. Check if the 400mA load requirement exceeds standard LDO capabilities in the design.

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

The ISL9007 belongs to the Intersil family of high-current LDO regulators designed for portable applications. It distinguishes itself through superior PSRR and low noise characteristics compared to standard regulators. The series supports various fixed output voltages while maintaining consistent electrical performance across the operating temperature range.

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

Consult official substitution guides for equivalent Renesas or Intersil LDOs with matching 400mA current ratings and 3.3V output. Verify pinout compatibility and package dimensions before replacing.