ISL78235AARZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL78235AARZ-T7A is an automotive-grade, single-output synchronous buck regulator manufactured by Renesas Electronics. It operates within a 2.7 V to 5.5 V input voltage range and delivers up to 5 A of continuous output current. The device features a fixed switching frequency of 2 MHz, with a typical quiescent supply current of 19 mA. Designed for high efficiency, it supports operation across an extended temperature range from -40 °C to +105 °C. The component is housed in a WQFN-EP-16 package and includes integrated protection mechanisms such as over-temperature, overcurrent, and shutdown capabilities.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade synchronous buck topology designed for high-efficiency power conversion
• Integrated low on-resistance FETs to minimize conduction losses and external component count
• Built-in protection features including over-temperature, overcurrent, and soft-start functionality

Voltage Regulators - DC DC Switching Regulators Applications

• Vehicle computer systems for advanced E/E architectures
• Power sequencer and I/O expander modules for printers
• General automotive electronic control units requiring stable 5V or lower rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T7A' against official Renesas documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the part number matches the exact RoHS compliance status and moisture sensitivity level required for your assembly process. Cross-reference the datasheet revision date to confirm compatibility with your design requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single output rail capable of handling 5 A is required within a 2.7 V to 5.5 V input window. The 2 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the WQFN-EP-16 package size constraints and thermal dissipation needs relative to the expected load current and ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL78235 series of automotive synchronous buck regulators. It shares functional similarities with other members like the ISL78233 and ISL78234 but offers higher current capacity. The series is characterized by its compact footprint and integration of power switches, targeting space-constrained automotive applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes may include ISL78235 variants with different packaging options (e.g., tube vs. reel) or pin-compatible upgrades within the same family. Verify electrical parameters and thermal performance before substitution.