ISL78302ARBNZ-T7A

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

The ISL78302ARBNZ-T7A is an automotive-grade dual low dropout (LDO) linear voltage regulator manufactured by Renesas Electronics Corporation. It features two independent positive fixed output channels providing 1.5V and 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 high power supply rejection ratio (PSRR) ranging from 64dB at 1kHz to 38dB at 100kHz, alongside a low quiescent current of 36µA. Packaged in a compact 10-DFN (3x3mm) surface-mount format, it supports operation across a temperature range of -40°C to 105°C.

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 noise conditions
• Low standby current consumption optimized for battery-powered automotive applications
• Integrated protection mechanisms including overcurrent limiting and thermal shutdown

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

• Automotive infotainment system power distribution
• Sensor module biasing in advanced driver assistance systems
• Microcontroller unit core and I/O voltage regulation
• Telematics control unit power management

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

Verify the specific suffix 'T7A' indicates tape-and-reel packaging when ordering. Confirm that the 1.5V/3.3V output configuration matches the target circuit design requirements. Ensure compatibility with the 10-DFN footprint during PCB layout. Check for RoHS compliance status if required by local regulations. Validate AEC-Q100 qualification data for automotive reliability standards.

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

Select this component when dual isolated rails are required from a single input source within a 6.5V limit. Consider the 300mA per channel rating against peak load demands. Evaluate the 36µA quiescent current impact on overall system efficiency. Assess the 10-DFN package size constraints against available board space. Verify thermal dissipation capabilities given the small form factor.

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

This part belongs to the ISL78302 family of high-performance dual LDOs designed for automotive environments. It succeeds earlier Intersil designs now managed by Renesas. The device integrates essential protections while maintaining low noise characteristics suitable for sensitive analog and digital loads. It represents a consolidated solution replacing discrete regulator pairs in compact automotive modules.

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

ISL78302ARNBZ-T7A serves as a direct pin-compatible alternative with identical electrical specifications. Verify that any substitute maintains the same 1.5V/3.3V output combination and 300mA current ratings. Ensure the replacement also meets AEC-Q100 automotive grade requirements and fits the 10-DFN package.

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

What is the maximum input voltage allowed for the ISL78302ARBNZ-T7A?

The maximum input voltage is 6.5V.

Does the ISL78302ARBNZ-T7A include protection features?

Yes, it includes overcurrent protection and thermal shutdown.

What is the quiescent current of this dual LDO?

The combined quiescent current is 36 µA.