ISL78302AARMMZ-T7A

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

The ISL78302AARMMZ-T7A is a high-performance dual low-dropout (LDO) linear voltage regulator manufactured by Renesas Electronics. It provides two independent positive fixed outputs, each capable of sourcing up to 300mA. The device features very low standby current and exceptionally high power supply rejection ratio (PSRR), ensuring clean power delivery in noise-sensitive applications. It operates with an input voltage range up to 6.5V and delivers fixed output voltages of 3V on both channels. Packaged in a compact 10-DFN (3x3mm) surface-mount footprint with an exposed pad for thermal dissipation, it supports operation across a wide temperature range from -40°C to +105°C.

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

• Dual-output architecture providing independent 300mA current capability per channel
• High power supply rejection ratio (PSRR) for effective noise filtering
• Low quiescent current consumption for energy-efficient operation
• Integrated protection mechanisms including overcurrent and thermal shutdown

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

• Automotive infotainment systems requiring stable power rails
• Telematics control units needing low-noise regulation
• Sensor interface circuits demanding high PSRR performance
• Body electronics modules operating in harsh thermal environments

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 3V/3V output configuration matches the design requirements, as other variants exist with different voltage combinations. Ensure the 10-DFN package dimensions align with the PCB footprint. Check for RoHS compliance status if required by environmental regulations. Validate that the AEC-Q100 qualification meets automotive reliability standards for the target application.

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 external circuitry. The high PSRR makes it suitable for RF or audio sections sensitive to supply ripple. Consider the 300mA limit per channel against peak load demands. The 6.5V maximum input voltage restricts use in higher voltage bus systems. Evaluate thermal performance in the 10-DFN package under worst-case ambient conditions.

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

This part belongs to the ISL78302 family of dual LDO regulators designed for automotive and industrial markets. It complements single-output variants by offering integrated dual-rail generation. The series emphasizes low noise and high rejection ratios, distinguishing it from standard general-purpose LDOs. It serves as a direct replacement for older Intersil designs within the same functional class.

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

Direct substitutes include ISL78302AARBJZ-T7A and ISL78302AARJRZ-T7A, which share the same package and pinout but offer different fixed output voltage combinations. Verify that the alternative voltage levels match the system requirements before substitution.