ISL9005IRMZ

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

The ISL9005IRMZ is a high-performance Low Dropout (LDO) linear regulator from the Intersil ISL9005 series, designed for applications requiring low standby current and high Power Supply Rejection Ratio (PSRR). It is capable of sourcing up to 300mA of output current. The device features a wide input voltage range from 2.3V to 6.5V and maintains stability with output capacitance between 1µF and 10µF, supporting an Equivalent Series Resistance (ESR) of up to 200mΩ. Key electrical parameters include a typical dropout voltage of 200mV at 300mA load, a quiescent current of 50µA, and an output noise of typically 45µVRMS at 100µA with a 1.5V output. The voltage regulation accuracy is specified at ±1.8% across all operating conditions.

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

• High PSRR performance of 75dB at 1kHz for effective noise rejection
• Excellent transient response capability to handle large current steps
• Integrated soft-start function to limit input current surge during enable
• Built-in current limit and overheat protection mechanisms

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 Renesas or Intersil distributors due to potential availability issues with legacy parts. Confirm RoHS compliance status as the datasheet indicates Pb-free construction. Check for moisture sensitivity levels if storage conditions have been compromised. Ensure the specific suffix matches the required package variant, as the IRMZ designation corresponds to the DFN-8 form factor.

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

Select this LDO when low quiescent current and high PSRR are critical for battery-powered portable electronics. The device is suitable for designs requiring stable operation with small ceramic capacitors. Consider the thermal dissipation capabilities within the tiny 2mmx3mm 8 Ld DFN package. Ensure the input voltage remains within the 2.3V to 6.5V range for proper regulation.

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

The ISL9005IRMZ belongs to the ISL9005 family of single-output LDOs manufactured by Intersil, now part of Renesas Electronics. This series is engineered for space-constrained applications where power efficiency and noise immunity are paramount. The IRMZ suffix specifically denotes the 8-lead DFN package version, distinguishing it from other pinout or thermal variants in the broader product line.

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

Publicly confirmed substitute part numbers for the ISL9005IRMZ are not available in the provided documentation. Users should consult official Renesas replacement guides or contact technical support for validated cross-references.