ISL78302AARGCZ-T

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

The ISL78302AARGCZ-T is a dual low-dropout (LDO) linear regulator manufactured by Renesas Electronics Corporation. It provides two independent fixed output voltages of 1.8V and 2.7V, each capable of sourcing up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V and features extremely low quiescent current, typically 47µA when both LDOs are active. It includes individual power-on-reset (POR) functions for each output, separate enable pins, and protection against overcurrent and thermal overload. The component is AEC-Q100 qualified for automotive applications and operates within a temperature range of -40°C to +105°C.

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

• Integrates two high-performance 300mA LDOs with excellent transient response capabilities
• Features very high power supply rejection ratio (PSRR) and low output noise for sensitive applications
• Includes individual power-on-reset functions with externally programmable delay for one output
• Supports shutdown mode with typical standby current less than 0.3µA via separate enable pins

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

• Automotive electronic control units requiring stable dual voltage rails
• Sensor interfaces demanding low noise and high PSRR performance
• Actuator driver circuits needing reliable power-on sequencing
• Low-power embedded systems utilizing automotive-grade components

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

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration as per manufacturer documentation. Confirm that the fixed output voltages match system requirements, as variants exist with different voltage combinations. Ensure compatibility with the 10-DFN package footprint during PCB layout. Check for any recent product change notices regarding labeling or assembly site updates before finalizing procurement orders.

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

Select this component when dual isolated rails are needed from a single source without complex switching regulation. Consider the 300mA current limit per channel for load requirements. Evaluate the need for external timing capacitors if precise POR delay synchronization is critical for the secondary output. Verify input voltage stability remains within the 2.3V to 6.5V window under all operating conditions.

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

This part belongs to the ISL78302A series of dual LDO regulators designed for automotive and industrial environments. It complements Renesas' portfolio of power management ICs focused on efficiency and reliability. The series supports applications requiring clean power delivery with minimal external component count, leveraging integrated protection features to enhance system robustness in harsh electrical environments.

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

Consult official substitution lists for equivalent dual LDOs with matching current ratings and voltage outputs. Verify pin-to-pin compatibility if replacing in existing designs. Ensure thermal performance characteristics align with the original design constraints. Cross-reference AEC-Q100 qualification status to maintain automotive compliance standards.