ISL80031AFRZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL80031AFRZ-T7A is a monolithic synchronous step-down DC/DC converter from the ISL80031x series, manufactured by Renesas Electronics Corporation. It delivers up to 3A of continuous output current from an input voltage range of 2.7V to 5.5V. The device operates at switching frequencies of 1MHz or 2MHz and features peak current mode control architecture for superior transient response. Key electrical parameters include a quiescent current of 35μA and peak efficiency up to 95%. It integrates low rDS(ON) PMOS high-side and NMOS low-side MOSFETs, eliminating the need for a bootstrap capacitor.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Configured for PFM discontinuous conduction operation to maximize efficiency at light loads by reducing switching losses.
• Integrates a PMOS high-side MOSFET which eliminates the requirement for an external bootstrap capacitor.
• Includes comprehensive protection mechanisms such as overcurrent, short-circuit, negative current, over-temperature, UVLO, and OVP.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered consumer electronics
• Industrial control systems requiring compact power solutions
• Embedded computing platforms with single-rail input requirements

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'FRZ' against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the operating temperature range and pinout configuration match your PCB layout requirements. Cross-reference the part number with the latest Renesas documentation to confirm availability status and any recent product change notices affecting this specific variant.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing space-constrained applications requiring high efficiency under varying load conditions. The PFM mode makes it suitable for battery-operated devices where standby power consumption is critical. Consider the 2mm x 2mm DFN package for minimal footprint. Verify that the required output voltage falls within the adjustable range supported by the internal feedback network.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL80030/ISL80031 family of highly efficient synchronous buck converters. While the ISL80030 variants utilize PWM for fast transient response, the ISL80031 variants like this model use PFM for optimized light-load efficiency. The family shares common thermal management strategies and protection features but differs in modulation technique and specific performance characteristics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's cross-reference tools for verified alternatives.