ISL78302ARBNZ

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

The ISL78302ARBNZ is a dual low dropout (LDO) voltage regulator from Renesas, designed for automotive applications. It provides two fixed output voltages of 1.5V and 3.3V, each capable of sourcing up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 36µA. It offers high power supply rejection ratio (PSRR) of 64dB at 1kHz and low output noise of 37µVrms (10Hz to 100kHz). Packaged in a 10-DFN (3x3mm) case, it includes protection features such as overcurrent and thermal shutdown.

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

• Dual-channel architecture delivering independent 1.5V and 3.3V outputs with 300mA capacity per channel
• High performance power supply rejection ratio ensuring stable regulation under varying load conditions
• Low noise design suitable for sensitive analog and RF circuits in automotive environments
• Integrated safety protections including overcurrent limiting and thermal shutdown mechanisms

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

• Automotive infotainment system power distribution
• Sensor node power supply in vehicle networks
• Microcontroller unit (MCU) core and I/O voltage regulation
• ADAS sensor interface power conditioning

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

Verify the specific suffix 'NBZ' against the requested 'ARBNZ' model number, as they may denote different output configurations or packaging variants. Confirm AEC-Q100 qualification status for your specific automotive grade requirements. Check for end-of-life notices or alternative component recommendations from the manufacturer due to potential production changes. Ensure compatibility with your PCB footprint for the 10-DFN package.

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

Select this component when dual isolated rails are required from a single input source in space-constrained automotive designs. The low quiescent current makes it suitable for battery-backed systems where standby power consumption is critical. Consider the 300mA output capability against your peak load demands. Verify that the input voltage range covers your system's minimum operating voltage during cranking or transient events.

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

This part belongs to the ISL78302 family of dual LDO regulators from Renesas Intersil. These devices are engineered for high reliability in harsh automotive environments. The family typically shares similar pinouts and protection features but varies in output voltage combinations and package options. This specific variant integrates fixed outputs optimized for common digital logic levels.

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

Publicly confirmed substitute part numbers include ISL78302ARNBZ-T7A. Verify electrical parameter equivalence, particularly output voltage accuracy and PSRR specifications, before substitution. Ensure the replacement component matches the 10-DFN package dimensions and pin configuration for direct board compatibility.