ISL70003ASEHVX

Voltage Regulators - DC DC Switching Regulators Overview

The ISL70003ASEHVX is a radiation and Single Event Effect (SEE) tolerant synchronous buck regulator manufactured by Renesas Electronics Corporation. It serves as an improved version of the ISL70003SEH, offering a higher output current rating of 9A and tighter load regulation with a typical value of less than 0.3%. The device operates within an input voltage range of 3V to 13.2V and supports an adjustable output voltage starting from 0.6V. Designed for harsh environments, it provides robust power conversion capabilities suitable for space and high-reliability applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Radiation and Single Event Effect (SEE) tolerance for reliable operation in harsh environments
• High output current capability rated at 9A
• Tight load regulation performance ensuring stable output under varying loads

Voltage Regulators - DC DC Switching Regulators Applications

• Spaceborne electronic systems requiring radiation-hardened components
• High-reliability point-of-load power conversion
• Military avionics power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'VX' against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Ensure that the radiation tolerance requirements align with the component's tested total dose and SEE performance data provided in the official test reports. Confirm availability status directly with authorized distributors or Renesas, as lead times may vary for specialized aerospace-grade parts.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems that require high-current buck regulation in radiation-exposed environments. The ISL70003ASEHVX is appropriate where standard commercial regulators would fail due to Single Event Effects or total ionizing dose degradation. Consider its 9A output capability and tight load regulation for sensitive downstream loads. Evaluate thermal management requirements given the high current density and ensure the input voltage range matches the system's power bus.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL70003 series of radiation-tolerant synchronous buck regulators from Renesas. It represents an enhanced iteration over the ISL70003SEH, specifically optimized for higher current delivery and improved line/load regulation characteristics. The series is designed to meet the stringent reliability standards required for aerospace and defense electronics, providing a robust solution for critical power distribution networks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ISL70003SEH is documented as the predecessor model. When substituting, verify that the lower load regulation specification of the SEH variant meets the design requirements. Ensure that the pinout and thermal characteristics remain compatible if moving between these specific variants within the same family.