ISL78302AARMMZ

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

The ISL78302AARMMZ is an automotive-grade dual low-dropout (LDO) voltage regulator manufactured by Renesas Electronics. It features two independent positive fixed outputs, each capable of sourcing up to 300mA. The device operates with a wide input voltage range from 2.3V to 6.5V and provides a typical output voltage of 3V per channel. Key electrical specifications include a quiescent current of 47µA when both LDOs are active, a power supply rejection ratio (PSRR) of 90dB at 1kHz, and a maximum dropout voltage of 230mV at full load. It offers high accuracy with ±1.8% regulation over operating conditions and includes integrated protection against overcurrent and thermal overload.

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

• Integrates two high-performance 300mA LDO channels in a single compact package
• Provides very high PSRR and low output noise for sensitive analog circuitry
• Includes individual power-on-reset (POR) functions with programmable delay for one channel
• Supports separate enable pins for independent control and ultra-low shutdown current

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

• Automotive infotainment systems requiring clean power rails
• Sensor interface circuits demanding low noise and high PSRR
• Microcontroller unit (MCU) power supplies in automotive environments
• RF modules and communication interfaces needing stable regulated voltage

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

Verify the specific suffix MMZ corresponds to the tray packaging configuration as indicated by distributor data. Confirm AEC-Q100 qualification status for your target automotive application tier. Check for End-of-Life (EOL) notices or Production Change Notices (PCN) regarding manufacturing site updates or label changes. Ensure compatibility with your board's moisture sensitivity level (MSL 3) requirements during assembly.

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

Select this component when dual isolated LDOs are required within a single footprint. It is suitable for designs needing high PSRR (>90dB) to suppress input ripple. Consider the 10-DFN package size constraints and thermal dissipation capabilities for 300mA loads. Verify that the required output voltage matches the fixed 3V option available in this specific part number variant.

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

This device belongs to the ISL78302A series of dual LDO regulators designed for automotive applications. It shares core architecture with other variants like ISL78302AARJRZ but differs in packaging and potentially output voltage options. The series is characterized by its low standby current and robust performance under varying load conditions, making it a standard choice for power management in modern vehicle electronics.

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

Direct substitutes may include ISL78302AARJRZ if tray packaging is acceptable and output voltages align. Other dual LDOs from Renesas or competitors must be evaluated for pin compatibility, current rating, and PSRR specifications. Always verify functional equivalence through detailed datasheet comparison before implementation.