ISL78302ARFWZ-T7A

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

The ISL78302ARFWZ-T7A is a dual-channel, low-dropout (LDO) linear voltage regulator manufactured by Renesas Electronics Corporation. It operates within an input voltage range of 2.3 V to 6.5 V and provides two fixed output voltages: 1.2 V and 2.5 V. Each channel supports a maximum output current of 300 mA with a typical dropout voltage of 300 mV at full load. The device features a typical power supply rejection ratio (PSRR) of 64 dB and a quiescent current of approximately 36 µA to 47 µA. It is housed in a compact 10-lead DFN package (3x3 mm) and is rated for automotive-grade operation across a temperature range of -40°C to +105°C.

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

• Dual-output configuration providing independent 1.2 V and 2.5 V rails from a single component
• High power supply rejection ratio (PSRR) for effective noise suppression in sensitive circuits
• Automotive-grade reliability compliant with AEC-Q100 standards
• Integrated protection mechanisms including overcurrent limiting and thermal shutdown

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

• Powering analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) in automotive infotainment systems
• Supplying clean voltage rails for sensor interfaces in vehicle body control modules
• Biasing RF front-end components requiring low-noise power sources
• Providing stable reference voltages for microcontroller peripheral modules

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

Verify the specific suffix 'T7A' against official Renesas documentation to confirm tape-and-reel packaging specifications, as standard datasheets may primarily list tube packaging variants. Confirm end-of-life status and last-time-buy dates directly with the manufacturer or authorized distributors, as discontinuation notices impact long-term procurement planning. Ensure compliance with RoHS3 directives and moisture sensitivity level (MSL 3) handling requirements during assembly.

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

Select this component when designing automotive electronics requiring dual, low-noise voltage rails from a single LDO footprint. The fixed 1.2 V and 2.5 V outputs eliminate external resistor networks, simplifying board layout. Verify that the total load current does not exceed 300 mA per channel and that the input voltage remains within the 2.3 V to 6.5 V window. Consider the 10-DFN package size constraints and thermal dissipation capabilities under maximum load conditions.

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

The ISL78302 series belongs to Renesas' portfolio of high-performance, low-noise LDO regulators designed specifically for automotive applications. These devices are part of the broader ISL7830x family, which emphasizes high PSRR and low quiescent current to extend battery life in electric and hybrid vehicles. The integration of two channels in a small DFN package allows for significant space savings compared to using discrete single-channel regulators.

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

Check for direct pin-compatible alternatives within the ISL78302 family, such as ISL78302ARFWZ, noting differences in packaging (tube vs. tape-and-reel). Evaluate cross-brand equivalents like Texas Instruments TPS7A or Analog Devices ADP parts only if they match the dual-channel, fixed-voltage, and automotive-grade requirements exactly.