ISL78302ARBNZ-T

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

The ISL78302ARBNZ-T is a dual-channel, low-dropout linear regulator (LDO) from the Renesas ISL78302A series, designed for automotive applications. It features two independent positive fixed outputs with a maximum current of 300mA per channel. The device operates within an input voltage range of 2.3V to 6.5V and delivers fixed output voltages of 1.5V and 3.3V. Key electrical specifications include a typical quiescent current of 36µA, a dropout voltage of approximately 0.3V at 300mA load, and high power supply rejection ratio (PSRR). It is housed in a compact 10-DFN (3x3mm) package with an exposed pad.

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

• Dual-output architecture providing independent 1.5V and 3.3V rails from a single component
• Automotive-grade reliability certified to AEC-Q100 standards for harsh environment operation
• Integrated protection mechanisms including over-current limiting and thermal shutdown
• Low noise performance suitable for sensitive analog and RF circuitry

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

• Powering microcontrollers and memory modules in automotive infotainment systems
• Supplying stable voltage rails for sensor interfaces in vehicle control units
• Biasing RF transceivers requiring low-noise power sources in connected car modules

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

Verify the suffix 'T' indicates tape-and-reel packaging configuration distinct from tube variants. Confirm the specific output voltage combination matches the design requirement, as the base part number may correspond to different voltage pairs depending on the full ordering code. Ensure compatibility with the 10-DFN footprint and check for moisture sensitivity level requirements during assembly.

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

Select this component when a dual-rail solution is required to save board space in automotive designs. Compare PSRR values against other LDOs if noise immunity is critical for downstream signal integrity. Evaluate the 300mA current limit against peak load demands to ensure adequate headroom. Consider the 10-DFN package size constraints relative to available PCB real estate.

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

This device belongs to the ISL78302A family of high-performance LDOs. It shares core architectural features with variants like ISL78302ARNBZ but differs in packaging and specific output voltage configurations. The family is characterized by its focus on low noise and high PSRR for automotive electronics.

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

ISL78302ARBNZ is a direct pin-compatible alternative differing only in packaging format. Verify that substitute parts maintain the same 1.5V/3.3V output combination and meet AEC-Q100 automotive qualification requirements.