ISL80505IRAJZ

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

The ISL80505IRAJZ is a single-output, positive adjustable linear voltage regulator (LDO) manufactured by Renesas Electronics Corporation. It provides a maximum output current of 500mA with an input voltage range from 1.8V to 6V. The output voltage is adjustable between 0.8V and 5.5V. Key electrical parameters include a typical dropout voltage of 45mV at full load, with a maximum of 90mV. Quiescent current is specified at 4.6mA, while maximum supply current reaches 5.7mA. Power Supply Rejection Ratio (PSRR) ranges from 60dB at 120Hz to 57dB at 1kHz. The device operates within a temperature range of -40°C to +125°C and is housed in an 8-DFN (3x3mm) package with an exposed pad.

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

• Adjustable output voltage capability ranging from 0.8V to 5.5V for flexible system design
• Integrated enable pin and soft-start functionality for controlled power sequencing
• Built-in protection mechanisms including overcurrent limiting and thermal shutdown
• Low dropout performance ensuring high efficiency under varying load conditions

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

• Bluetooth Low Energy (BLE) sensor network solutions
• Portable battery-powered electronic devices
• Embedded systems requiring stable low-noise power rails
• Industrial control modules operating in harsh environments

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

Verify the specific suffix 'RAJZ' corresponds to the 8-DFN 3x3mm tray packaging configuration as listed in official distributor catalogs. Confirm RoHS compliance status through the manufacturer's latest datasheet or environmental declaration. Ensure the ordering part number matches the exact pinout and thermal pad requirements for your PCB layout. Cross-reference the manufacturing date code to ensure availability of the latest revision level.

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

Select this component when a compact solution is required for currents up to 500mA with adjustable output flexibility. Compare PSRR specifications against noise-sensitive applications to ensure adequate filtering. Evaluate the thermal dissipation capabilities of the 8-DFN package against your expected ambient temperatures and load profiles. Consider the quiescent current impact on overall system battery life if used in portable designs.

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

This LDO belongs to the ISL80505 series, designed for high-performance analog enhancement applications. It utilizes CMOS technology to achieve lower static current consumption compared to traditional bipolar LDOs. The series is optimized for fast transient response and low noise, making it suitable for sensitive RF and digital logic supplies. It complements other regulators in the portfolio offering different current ratings and fixed voltage options.

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

Check for direct pin-compatible alternatives within the same family, such as fixed-voltage variants of the ISL80505 series. Verify that any substitute maintains the same 8-DFN footprint and thermal characteristics. Ensure the replacement supports the required 500mA output current and adjustable voltage range. Confirm compatibility with existing enable and soft-start circuitry.