ISL9007IUNZ-T

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

The ISL9007IUNZ-T is a high-performance low-dropout regulator (LDO) manufactured by Renesas/Intersil, designed for portable wireless equipment. It delivers a continuous output current of 400mA with a fixed 3.3V output voltage. 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. Key electrical specifications include a power supply rejection ratio (PSRR) of 75dB at 1kHz, output noise less than 30µVRMS, and quiescent current of 50µA. It offers ±1.8% accuracy over operating conditions and includes protection against current limit and overheating.

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

• High performance LDO delivering 400mA continuous output current with excellent transient response
• Very high PSRR of 75dB at 1kHz and low output noise typically below 30µVRMS
• Stable operation with ceramic capacitors ranging from 1µF to 10µF with ESR up to 200mΩ
• Integrated shutdown pin reduces standby current to 1µA maximum

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 component authenticity through authorized channels as the manufacturer may discontinue this part. Confirm RoHS compliance status and check for specific environmental documentation prior to procurement. Ensure the MSOP-8 package matches design requirements. Review datasheet revisions for any updates to electrical characteristics or thermal parameters before finalizing orders.

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

Select this LDO when low noise and high PSRR are critical for sensitive analog circuits in portable devices. The fixed 3.3V output suits systems requiring stable rail voltages. Consider the 400mA current capability and 2.3V minimum input voltage for battery-powered applications. The soft-start feature helps manage input current surges during enable, making it suitable for systems with strict power-up constraints.

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

The ISL9007 belongs to the Intersil high-current LDO family, optimized for portable electronics. It complements other power management solutions by providing clean, regulated voltage rails with minimal quiescent consumption. The device integrates thermal and current protection, enhancing reliability in compact handheld designs where space and efficiency are paramount constraints.

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

Public confirmed substitute part numbers are not available in the provided documentation.