ISL9000IRMMZ

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

The ISL9000IRMMZ is a dual low-dropout (LDO) linear voltage regulator manufactured by Intersil, now part of Renesas Electronics. It features two independent output channels capable of sourcing up to 300 mA each. The device operates within an input voltage range of 2.3 V to 6.5 V and provides fixed output voltages, such as 3.3 V per channel. It is housed in a compact 10-lead DFN package measuring 3 mm x 3 mm with an exposed thermal pad. Key electrical characteristics include a typical dropout voltage of 200 mV at 300 mA load and a maximum load regulation of 0.1%. The regulator maintains stable operation with output capacitance between 1 µF and 10 µF.

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

• Dual-channel architecture providing independent power rails for sensitive analog and digital circuits
• High power supply rejection ratio (PSRR) to minimize noise coupling from the input source
• Integrated output voltage sequencing and individual enable controls for precise power management
• Low quiescent current design to extend battery life in portable applications

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

• Powering imaging sensors in digital cameras and mobile phone camera modules
• Supplying RF sections in wireless communication devices requiring low noise
• Portable medical instrumentation requiring stable and clean power rails
• MP3 players and other audio equipment sensitive to power supply ripple

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

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific lot traceability requirements before procurement. Check for end-of-life notifications or production discontinuance notices from Renesas/Intersil. Ensure that the ordering suffix matches the required package type and temperature grade specifications.

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

Select this component when designing systems requiring dual isolated LDO outputs with high PSRR and low noise profiles. Evaluate the total static current consumption against battery life requirements, considering the typical 21 µA per LDO. Verify that the external output capacitor values fall within the specified 1 µF to 10 µF range to ensure stability. Consider the thermal performance of the DFN package if operating near maximum current limits.

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

The ISL9000 series represents a family of high-performance dual LDO regulators designed for noise-sensitive applications. It complements other models like the ISL9011 and ISL9012, which offer different current ratings. The series is characterized by its ability to provide ultra-low noise and high PSRR, making it suitable for RF and imaging applications. The ISL9000 specifically targets designs needing two 300 mA rails with integrated sequencing capabilities.

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

Direct pin-compatible replacements within the same family include the ISL9011 and ISL9012, though these offer different current capabilities (150 mA and 300 mA mixed). Verify that any substitute maintains the required PSRR and noise specifications for the specific application. Cross-reference datasheets to ensure compatibility with existing PCB layout and capacitor selection strategies.