ISL78235AARZ

Voltage Regulators - DC DC Switching Regulators Overview

The ISL78235AARZ is an automotive-grade synchronous buck regulator manufactured by Renesas Electronics. It delivers a maximum output current of 5 A with a single output channel. The device operates within an input voltage range of 2.7 V to 5.5 V and supports adjustable output voltages from 0.6 V to 5.5 V. It features a programmable switching frequency ranging from 500 kHz to 4 MHz, utilizing current mode control topology. The component functions reliably across an extended temperature range of -40°C to +105°C and is housed in a compact WQFN-EP-16 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade synchronous buck converter designed for high reliability in vehicle environments
• Integrated current mode control architecture for stable regulation under varying load conditions
• Programmable switching frequency allows optimization for efficiency and external component size
• Compact surface-mount packaging facilitates dense PCB layout in constrained spaces

Voltage Regulators - DC DC Switching Regulators Applications

• Power sequencer and I/O expander for printers (PPC/MFP)
• Vehicle computer systems for future E/E architectures
• High-performance MCU-based power distribution units

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AARZ' against the official datasheet to confirm package type and tape-and-reel specifications. Ensure the procurement source provides valid RoHS compliance documentation as required for automotive applications. Confirm that the supplier is an authorized distributor to guarantee part authenticity and traceability. Check for any recent product change notices regarding manufacturing location or material composition updates.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 5 A synchronous buck solution is required for automotive systems operating between 2.7 V and 5.5 V. Consider the ISL78235AARZ if current mode control and wide frequency adjustability are necessary for noise management. Evaluate thermal performance requirements relative to the WQFN-EP-16 package capabilities. Compare against lower-current alternatives if the 5 A limit exceeds system demands.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the ISL78235 series of automotive synchronous buck converters. It complements other Renesas power management ICs such as the ISL78233 and ISL78234, which offer lower current ratings. The series is designed to support modern electronic/electrical architectures in vehicles requiring efficient, compact power conversion solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official substitution guides for equivalent parts within the ISL7823x family. Verify pin compatibility and electrical parameters before replacing with similar automotive buck regulators from other manufacturers.