ISL78233AARZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL78233AARZ-T is an automotive-grade synchronous buck regulator from the Renesas ISL78233 series. It operates with an input voltage range of 2.7 V to 5.5 V and delivers up to 4 A of output current. The device integrates a fixed switching frequency of 2 MHz, enabling the use of compact external components. It features a TQFN-EP-16 package designed for surface-mount installation. The regulator supports a shutdown mode to minimize quiescent current during standby operations. It is rated for operation within an extended temperature range suitable for demanding automotive environments.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards
• Integrated high-side and low-side power switches for efficient step-down conversion
• Fixed 2 MHz switching frequency for reduced passive component size
• Shutdown pin capability for system power management

Voltage Regulators - DC DC Switching Regulators Applications

• On-board vehicle computer power distribution
• Infotainment system voltage regulation
• Telematics control unit power supplies
• ADAS sensor module power conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AA' against the manufacturer's official datasheet to confirm exact binning or revision status. Confirm tape-and-reel packaging specifications match design requirements. Ensure RoHS compliance documentation is obtained directly from Renesas Electronics Corporation before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing automotive systems requiring a single-phase, high-current synchronous buck solution. The fixed 2 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the thermal performance of the TQFN-EP-16 package meets the PCB layout heat dissipation requirements for the expected load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL78233 family of automotive synchronous buck regulators. The family includes variants such as the ISL78233ARZ and ISL78235, offering different current ratings and package options. These devices are engineered to provide robust power management solutions for modern automotive electronic architectures requiring high efficiency and compact form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct substitutes like the ISL78233ARZ for non-tape-and-reel packaging needs. Evaluate the ISL78235 if higher output current capacity is required. Ensure any replacement maintains automotive qualification and compatible pinout configurations.