ISL9000IRJCZ

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

The ISL9000IRJCZ is a dual low-dropout (LDO) linear voltage regulator manufactured by Renesas Electronics Corporation. It provides two independent positive fixed outputs, typically configured for 1.8V and 2.8V rails, each capable of sourcing up to 300mA. The device operates with an input voltage range from 2.3V to 6.5V. Key electrical specifications include a maximum dropout voltage of 0.4V at 300mA output current, a quiescent current of 32µA, and a power supply rejection ratio (PSRR) ranging from 90dB to 50dB across frequencies of 1kHz to 100kHz. It features integrated protection mechanisms including overcurrent, thermal shutdown, and undervoltage lockout.

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

• Dual-output architecture providing independent regulation for multiple system rails
• Integrated Power-On-Reset (POR) function for each output channel
• High power supply rejection ratio suitable for noise-sensitive applications
• Compact surface-mount packaging designed for space-constrained designs

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

• Portable electronic devices requiring efficient multi-rail power management
• Communication equipment needing stable voltage supplies with low noise
• Embedded systems utilizing microcontrollers or memory components
• Battery-powered appliances requiring extended operational life through low standby current

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

Verify component authenticity through authorized distributors as the part status is listed as obsolete. Confirm package integrity upon receipt, specifically checking for damage to the exposed thermal pad in the DFN-10 housing. Ensure compatibility with RoHS3 standards if required by your manufacturing process. Review the latest Product Change Notification (PCN) documents for any updates regarding material composition or manufacturing site changes that may affect long-term availability or performance characteristics.

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

Select this component when designing circuits that require two distinct regulated voltages from a single source without complex external feedback networks. The fixed output configuration simplifies layout compared to adjustable regulators. Consider the 300mA per-channel limit against peak load requirements. The wide PSRR makes it preferable over standard LDOs in RF or precision analog sections. Verify that the input voltage remains within the 2.3V to 6.5V window under all operating conditions to maintain regulation stability.

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

This device belongs to the ISL9000A series of high-performance dual LDOs. It shares architectural similarities with other members like the ISL9000AIRNCZ and ISL9000AIRJBZ, differing primarily in specific output voltage combinations and minor parameter variations. The series is characterized by its low IQ and high PSRR, targeting portable electronics. Renesas acquired Intersil, which originally developed this line, integrating it into their broader PMIC portfolio.

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

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is marked obsolete, engineers should consult official Renesas replacement guides or contact technical support directly for validated cross-references.