ISL70001SRHFR5427

Voltage Regulators - DC DC Switching Regulators Overview

The ISL70001SRHFR5427 is a radiation-hardened point-of-load (POL) DC/DC converter designed for space applications. It integrates power MOSFET switching transistors within a submicron BiCMOS process to provide efficient voltage regulation in harsh environments. The device functions as a synchronous buck regulator, combining control logic and power stages into a single compact module. This integration minimizes component count and board area while ensuring reliable operation under high total ionizing dose and single-event effects conditions typical of satellite and aerospace systems.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Radiation-hardened design optimized for space environment reliability
• Integrated power MOSFETs implemented in submicron BiCMOS technology
• Synchronous buck regulation architecture for high efficiency
• Single-event effect and total dose testing verified performance

Voltage Regulators - DC DC Switching Regulators Applications

• Satellite power distribution systems
• Spacecraft onboard electronics regulation
• Aerospace point-of-load converters
• High-reliability military avionics power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix FR5427 against official Renesas documentation to confirm tape-and-reel packaging specifications and lot traceability requirements. Ensure that the radiation hardness qualification data matches the intended mission profile. Confirm availability status as this may be a specialized or legacy component requiring direct engagement with manufacturer sales engineering teams for procurement support.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when radiation tolerance is critical for space-based deployments. The integrated MOSFET design reduces external component sensitivity to latch-up events. Evaluate thermal management needs based on the specific power dissipation in vacuum conditions. Compare against standard commercial parts only if shielding strategies can mitigate radiation risks effectively.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL70001 family of hardened POL converters developed by Intersil, now part of Renesas Electronics. These devices are engineered specifically for defense and space markets where standard commercial components fail due to radiation exposure. The SRH designation typically indicates a hermetic ceramic package suitable for extreme environmental sealing.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

No public confirmed substitute part numbers are available in general catalogs. Direct replacement requires matching radiation hardness levels and pinout compatibility. Consult Renesas application notes for migration paths from older Intersil radiation-hardened families.