ISL78302AARBJZ-T7A

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

The ISL78302AARBJZ-T7A is a high-performance automotive-grade dual low-dropout (LDO) linear voltage regulator manufactured by Renesas Electronics. It features two independent positive fixed outputs, typically configured as 1.5V and 2.8V or 3.3V, each capable of sourcing up to 300mA. The device operates with a maximum input voltage of 6.5V and maintains a typical dropout voltage of 0.3V at full load. It exhibits low quiescent current, specified between 36µA and 55µA depending on the specific variant documentation, ensuring efficient power management. The unit includes built-in protection against overcurrent and thermal overload.

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

• Dual-channel architecture providing independent regulation for two distinct output rails within a single compact package.
• Automotive-grade qualification compliant with AEC-Q100 standards, ensuring reliability in demanding vehicle environments.
• Integrated safety mechanisms including overcurrent protection and thermal shutdown to safeguard connected circuitry.

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

• Power distribution networks in automotive infotainment systems requiring stable multi-voltage rails.
• Sensor interface circuits in advanced driver-assistance systems (ADAS) needing low-noise power supplies.
• Body control modules requiring robust voltage regulation under varying thermal conditions.

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

Verify the specific output voltage configuration (e.g., 1.5V/2.8V vs. 1.5V/3.3V) against your schematic, as suffixes may denote different internal resistor settings. Confirm the package type matches your PCB footprint, typically 10-DFN (3x3). Check for end-of-life notices or production change notifications from Renesas, as availability may be limited. Ensure compatibility with your system's input voltage range, which must not exceed the 6.5V maximum rating.

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

Select this component when designing automotive electronics that require two separate, regulated voltage rails from a single source. It is suitable for applications where space is constrained due to its small DFN footprint. Consider the thermal performance if operating near the maximum current limit, as heat dissipation depends on board layout. Verify that the required output voltages match the available factory-fixed configurations for this specific part number.

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

This device belongs to the ISL78302 family of dual LDO regulators designed for automotive applications. It complements other components in Renesas' power management portfolio by offering a compact solution for multi-rail requirements. The series is characterized by high power supply rejection ratio (PSRR) and low noise, making it ideal for sensitive analog and digital loads in vehicles.

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

Publicly confirmed substitute part numbers include ISL78302ARNBZ-T7A, which offers parameter equivalence. When substituting, verify that the replacement shares the same pinout, package dimensions, and output voltage specifications to ensure direct compatibility without redesigning the surrounding circuitry.