ISL78302ARWCZ

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

The ISL78302ARWCZ is a dual low-dropout (LDO) voltage regulator from the Renesas ISL78302A series, designed for automotive applications. It features two independent outputs capable of sourcing 300mA each, with fixed output voltages typically available in combinations such as 1.2V/3.3V or 1.8V/2.7V. The device operates within an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 47µA when both LDOs are active. It offers high power supply rejection ratio (PSRR) performance, reaching up to 90dB at 1kHz, and ensures low output noise, typically 30µV RMS. The IC is housed in a compact 10-DFN (3x3mm) package and is rated for operation between -40°C and +105°C.

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

• Integrates two high-performance 300mA LDO channels with excellent transient response capabilities.
• Provides very high PSRR and extremely low output noise suitable for sensitive analog circuits.
• Includes individual power-on-reset (POR) functions and separate enable pins for each channel.

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

• Automotive sensor power supplies
• Actuator control circuitry
• Low-noise analog signal conditioning

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

Verify the specific output voltage combination required, as the ISL78302A series offers multiple fixed voltage variants. Confirm the package suffix matches the desired footprint. Check for end-of-life notices, as some variants in this family have reached obsolescence. Ensure compatibility with AEC-Q100 automotive qualification standards if used in vehicle systems.

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

Select this component when dual isolated rails are needed from a single input source in space-constrained automotive designs. Consider the 300mA per channel limit and the 6.5V maximum input voltage. Evaluate the need for external POR timing capacitors if precise reset sequencing is required for downstream logic.

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

This part belongs to the ISL78302A family of dual LDO regulators originally developed by Intersil and now manufactured by Renesas Electronics. The series is characterized by its focus on low noise and high PSRR, making it distinct from standard general-purpose LDOs. It is specifically targeted at automotive electronics requiring reliable power management under varying load conditions.

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

Direct substitutes include other parts within the ISL78302A family with matching output voltages, such as ISL78302ARNWZ or ISL78302AARGCZ. Verify pin-to-pin compatibility and electrical specifications before substitution.