ISL9000IRNFZ

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

The ISL9000IRNFZ 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 300mA each. The device operates with an input voltage range from 2.3V to 6.5V and provides fixed output voltages including 1.8V, 2.5V, and 3.3V. It exhibits a typical quiescent current of 21µA per LDO and achieves a power supply rejection ratio (PSRR) of 90dB at 1kHz. The unit is housed in a 10-lead DFN package measuring 3mm x 3mm.

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

• Integrates two independent LDO channels with individual enable controls for precise power management
• Delivers high power supply rejection ratio (PSRR) to suppress noise in sensitive RF applications
• Includes integrated power-on reset (POR) functionality and output voltage sequencing capabilities

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

• RF and power ripple sensitive applications such as imaging sensors
• Mobile phone camera modules requiring stable power delivery
• Portable medical instrumentation needing low noise regulation
• MP3 players and portable audio devices prioritizing battery life

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

Verify component authenticity through authorized distributors or official manufacturer channels due to potential obsolescence status. Confirm specific suffix designations match required output voltage configurations and thermal performance specifications. Ensure compliance with RoHS directives and moisture sensitivity levels prior to integration into production assemblies.

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

Select this component when designing circuits requiring simultaneous dual-rail generation with minimal static current consumption. Consider the 300mA output capability and low dropout characteristics for efficient battery-powered systems. Evaluate the need for high PSRR to protect sensitive analog front-ends from digital switching noise within the same system board.

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

This part belongs to the ISL9000A series of dual LDO regulators designed for portable electronics. It complements other variants like the ISL9011 and ISL9012 which offer different current distributions between channels. The series targets applications demanding high efficiency and low noise in compact form factors.

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

Check for direct pin-compatible alternatives within the ISL9000 family or newer Renesas LDO portfolios. Verify that substitute components maintain equivalent PSRR performance and output current ratings for critical signal integrity requirements.