ISL9000IRJBZ

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

The ISL9000IRJBZ is a dual positive fixed linear low-dropout (LDO) voltage regulator manufactured by Renesas Electronics Corporation. It provides two independent output channels with fixed voltages of 1.5V and 2.8V, each capable of sourcing up to 300mA. The device operates within an input voltage range of up to 6.5V and features a maximum dropout voltage of 0.4V at full load. Key electrical characteristics include a quiescent current of 32µA and a maximum supply current of 52µA. It is housed in a 10-lead VFDFN package with an exposed pad, measuring 3x3mm, suitable for surface-mount applications across a temperature range of -40°C to +85°C.

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

• Integrates individual Power-On-Reset (POR) functions for each output channel to ensure reliable system startup sequencing.
• Provides very high power supply rejection ratio (PSRR) and low noise performance to support sensitive analog and RF circuits.
• Includes comprehensive protection mechanisms such as overcurrent limiting, thermal shutdown, and under-voltage lockout (UVLO).
• Features external enable control and timing capacitor programming for the second output's POR delay.

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

• Portable battery-powered devices requiring efficient dual-rail power distribution.
• RF modules and wireless communication systems needing low-noise, high-PSRR power supplies.
• Embedded systems utilizing microcontrollers or DSPs that require precise voltage regulation and reset monitoring.
• Industrial control boards operating in extended temperature environments.

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

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS3 compliance and moisture sensitivity level (MSL 1) requirements for soldering processes. Check for available replacement packages or alternative pin-compatible parts if original stock is unavailable. Ensure proper handling of the exposed thermal pad during assembly.

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

Select this component when dual isolated LDO outputs are required in a compact footprint. Ideal for designs where low quiescent current extends battery life and high PSRR minimizes noise coupling. Consider the fixed 1.5V/2.8V output combination; if different voltages are needed, explore other variants within the ISL9000 series. Evaluate thermal performance based on PCB copper area for heat dissipation from the DFN package.

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

The ISL9000 series represents a family of high-performance dual LDO regulators designed for space-constrained applications. This specific part belongs to the standard industrial grade variant, distinguished by its IR suffix indicating tape-and-reel packaging. It complements Renesas' portfolio of power management solutions for portable electronics and industrial automation, offering a balance of performance, size, and reliability.

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

Check for ISL9000AIRJBZ (tube package) or ISL9000IRJBZ-T (tape-and-reel) for identical electrical specifications but different packaging formats. Verify if newer Renesas equivalents like the RAA211xxx series offer improved performance or availability while maintaining pin compatibility.