ISL78302ARNBZ-T7A

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

The ISL78302ARNBZ-T7A is a dual low-dropout (LDO) linear voltage regulator from Renesas, designed for automotive applications. It features two independent positive fixed outputs of 1.5V and 3.3V, each capable of sourcing up to 300mA. The device operates with an input voltage range up to 6.5V and maintains a typical dropout voltage of 0.3V at full load. It exhibits high power supply rejection ratio (PSRR) ranging from 64dB to 38dB across 1kHz to 100kHz frequencies. Quiescent current is specified at 36µA, with a maximum supply current of 55µA. The component is housed in a 10-DFN (3x3mm) package with exposed pad.

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

• Dual-channel architecture providing independent 1.5V and 3.3V regulated outputs within a single compact package.
• High power supply rejection ratio ensures stable performance against input line noise in sensitive automotive environments.
• Low quiescent current consumption supports battery life extension in always-on automotive systems.
• Integrated protection mechanisms include overcurrent limiting and thermal shutdown for enhanced system reliability.

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

• Automotive infotainment system power distribution
• Sensor module power regulation in ADAS architectures
• Body control module logic supply conditioning

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

Verify the specific suffix 'T7A' indicates tape-and-reel packaging configuration distinct from tray variants. Confirm AEC-Q100 qualification status matches project requirements. Ensure compatibility with RoHS3 standards. Check for end-of-life notifications or production change notices affecting lead times or material composition before finalizing procurement plans.

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

Select this component when dual isolated rails are required for mixed-signal automotive circuits. The fixed 1.5V/3.3V output combination suits digital core and I/O interfaces. Evaluate thermal dissipation capabilities given the 300mA per channel rating in the small DFN footprint. Consider the high PSRR requirement if the upstream supply experiences significant ripple.

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

This part belongs to the ISL78302 family of high-performance dual LDOs. It shares architectural similarities with other automotive-grade regulators but offers specific fixed voltage outputs optimized for common digital logic levels. The series emphasizes low noise and high PSRR for noise-sensitive applications.

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

ISL78302ARBNZ serves as a pin-compatible alternative with identical electrical specifications but differs in packaging format. Verify that any substitute maintains the same 10-DFN footprint and thermal characteristics to ensure board-level interchangeability without redesign.

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

What is the maximum input voltage for the ISL78302ARNBZ-T7A?

The maximum input voltage is 6.5V.

Does this regulator support adjustable output voltages?

No, the ISL78302ARNBZ-T7A provides fixed output voltages of 1.5V and 3.3V only.