ISL78302ARFBZ-T7A

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

The ISL78302ARFBZ-T7A is an automotive-grade dual-channel low dropout (LDO) voltage regulator manufactured by Renesas Electronics. It features two independent positive fixed output channels, typically configured for 1.2V and 2.5V rails, delivering a continuous output current of 300mA per channel. The device operates with an input voltage range from 2.3V to 6.5V and exhibits a typical power supply rejection ratio (PSRR) of 64dB at critical frequencies. It incorporates a low quiescent current of approximately 36µA to minimize standby power consumption. The regulator includes integrated protection mechanisms such as overcurrent limiting and thermal shutdown. It is housed in a compact 10-lead DFN (3x3mm) package with an exposed pad for enhanced thermal dissipation.

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

• Dual-channel architecture providing independent regulated outputs for simultaneous power rail generation
• High power supply rejection ratio (PSRR) to effectively suppress input noise and ripple
• Automotive qualification compliant with AEC-Q100 standards for reliability in harsh environments
• Integrated safety protections including overcurrent limiting and thermal shutdown

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

• Powering sensitive analog circuits in automotive infotainment systems
• Supplying stable voltage rails for automotive sensor interfaces
• Providing clean power for microcontroller unit (MCU) core and I/O domains in vehicle electronics

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

Verify the specific suffix 'T7A' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the ordering suffix matches the exact pinout and electrical characteristics defined in the official datasheet, as variations may exist within the ISL78302 family. Ensure compliance with RoHS directives and check for any end-of-life notifications or production change notices issued by Renesas prior to finalizing procurement orders.

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

Select this component when designing automotive power architectures requiring dual isolated LDOs with high noise immunity. The choice is driven by the need for low quiescent current to preserve battery life during standby modes and the requirement for AEC-Q100 certification. Consider the 300mA output capability against the load requirements of the target circuitry and ensure the 6.5V maximum input voltage aligns with the system's supply network.

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

This part belongs to the ISL78302A series of low dropout regulators designed specifically for automotive applications. The series emphasizes low noise performance and high PSRR to protect sensitive downstream components from power supply disturbances. Manufactured under Renesas Electronics, formerly Intersil, these devices are engineered to meet the rigorous reliability and environmental standards mandated for modern automotive electronic control units.

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

Direct replacements within the same family include ISL78302ARFWZ and ISL78302ARNBZ. Verify pin compatibility and output voltage configurations before substitution. Note that some variants may differ in packaging type or shipping quantity, requiring assessment of board space and manufacturing process adjustments.