ISL78302ARBFZ

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

The ISL78302ARBFZ is a dual-channel low-dropout (LDO) linear voltage regulator manufactured by Renesas Electronics. It operates within an input voltage range of 2.3 V to 6.5 V and provides two fixed output voltages: 1.8 V and 3.3 V. Each channel supports a maximum output current of 300 mA with a typical dropout voltage of 0.3 V at full load. The device features a low quiescent current of 36 µA and high power supply rejection ratio (PSRR). It includes integrated protection mechanisms such as overcurrent limiting and thermal shutdown, housed in a compact 10-DFN package.

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

• Dual-output configuration providing independent 1.8 V and 3.3 V rails from a single input source
• High power supply rejection ratio (PSRR) for effective noise suppression in sensitive analog circuits
• Integrated Power-On Reset (POR) functionality with internally fixed delay for reliable system initialization
• Automotive-grade reliability compliant with AEC-Q100 standards for harsh environment operation

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

• Powering automotive infotainment systems requiring clean, stable voltage rails
• Supplying logic and analog sections in automotive electronic control units (ECUs)
• Biasing sensors and microcontrollers in industrial control modules
• Providing regulated power for noise-sensitive communication interfaces in vehicles

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

Verify the specific suffix 'FZ' against the manufacturer's latest datasheet to confirm pinout and electrical characteristics match your design requirements. Check for End-of-Life (EOL) notices or Production Change Notices (PCN) regarding packaging or material composition updates. Ensure compatibility with RoHS3 regulations if required by your procurement policy. Confirm availability through authorized distributors due to potential supply chain constraints for legacy automotive components.

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

Select this component when dual isolated outputs are needed from a single LDO topology to save board space. It is suitable for applications requiring low noise and high PSRR, such as audio or RF sections in automotive electronics. Consider the 300 mA per channel limit and the 2.3 V minimum input voltage when designing the power stage. The 10-DFN package requires adequate thermal management considerations for continuous high-current operation.

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

The ISL78302 series belongs to Renesas' portfolio of automotive-grade low-noise LDO regulators. These devices are designed to meet the stringent reliability and performance demands of modern vehicle electronics. The series offers various fixed output voltage combinations to simplify power distribution networks in complex embedded systems.

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

ISL78302ARNBZ-T7A is listed as a parameter-equivalent alternative.