ISL78302AARJCZ-T

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

The ISL78302AARJCZ-T is a dual linear voltage regulator IC from Renesas Electronics, housed in a 10-DFN (3x3) package. It provides two positive fixed outputs of 2.8V and 1.8V, each capable of sourcing up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 47µA when both LDOs are active. It includes individual enable pins, power-on-reset functions, and protection against overcurrent and thermal overload. Certified to AEC-Q100 standards, it supports automotive applications within a temperature range of -40°C to +105°C.

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

• Integrates two high-performance LDOs with excellent transient response and low output noise
• Features individually controllable enable pins and programmable POR delay for the second output
• Provides very high PSRR and low standby current for efficient power management
• Includes integrated protection mechanisms for overcurrent and thermal conditions

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

• Automotive infotainment systems requiring stable dual voltage rails
• Portable electronic devices needing low-noise power supplies
• Industrial control modules utilizing AEC-Q100 certified components
• Battery-powered equipment requiring extended operational life through low quiescent current

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

Verify the specific output voltage configuration matches the design requirement, as suffixes indicate different voltage pairs. Confirm the package type is 10-DFN (3x3) and check for AEC-Q100 certification if automotive qualification is mandatory. Ensure compatibility with required output capacitance ranges for stability. Review datasheet for exact pinout and thermal pad requirements during PCB layout.

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

Select this component when dual isolated or correlated low-noise voltages are needed from a single source. It is suitable for designs requiring high PSRR to suppress supply noise. Consider the 300mA per channel limit for load requirements. The wide input voltage range allows flexibility in upstream power stages. Verify that the fixed output voltages align with downstream IC specifications without need for adjustment.

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

This part belongs to the ISL78302A family of dual LDO regulators designed for high-performance analog and mixed-signal applications. The series emphasizes low noise and high power supply rejection ratio, making it distinct from standard general-purpose regulators. It is manufactured by Renesas Electronics, continuing the legacy of Intersil power management solutions.

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

Direct substitutes include other ISL78302A variants with different output voltage combinations, such as ISL78302AARLLZ or ISL78302AARJMZ-T. Ensure any replacement maintains the same 10-DFN footprint and electrical characteristics like quiescent current and PSRR ratings.

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

How is the POR delay for the second output configured?

The POR delay for VO2 can be externally programmed by connecting a timing capacitor to the CPOR pin.

What is the shutdown current consumption?

When both Enable pins are low, the device enters shutdown mode, typically drawing less than 0.3µA.

Is the device stable with small output capacitors?

Yes, it is stable with output capacitance ranging from 1µF to 10µF with ESR up to 200mΩ.