ISL8025AIRTAJZ

Voltage Regulators - DC DC Switching Regulators Overview

The ISL8025AIRTAJZ is a synchronous buck regulator from the ISL8025A series, manufactured by Renesas Electronics. It delivers 5 A of continuous output current with an input voltage range of 2.7 V to 5.5 V and adjustable output from 600 mV to 5.5 V. The device operates at a default switching frequency of 2 MHz, adjustable between 500 kHz and 4 MHz. It features low ON-resistance FETs (36 mΩ P-channel high-side, 13 mΩ N-channel low-side) for high efficiency up to 95%. Operating temperature spans -40°C to +85°C in a TQFN-EP-16 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates low ON-resistance P-channel and N-channel FETs to maximize efficiency and minimize external component count.
• Supports adjustable switching frequency from 500 kHz to 4 MHz with external synchronization capability.
• Includes internal hiccup mode current limiting, overvoltage, overtemperature, and negative overcurrent protection.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring compact power solutions
• Industrial equipment needing efficient step-down regulation
• Communication infrastructure power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix AJZ corresponds to the required tape-and-reel packaging configuration and temperature grade. Confirm RoHS compliance status through official documentation before procurement. Ensure compatibility with existing board layout constraints for the TQFN-EP-16 package. Validate supply chain authenticity through authorized Renesas distributors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 5 A output current is required within a 2.7 V to 5.5 V input range. Choose the ISL8025AIRTAJZ over lower-current variants like the ISL8024 or ISL8023 if higher load capacity is necessary. Consider the 2 MHz default frequency for balancing size and efficiency. Verify that the TQFN-EP-16 package fits the mechanical design.

Voltage Regulators - DC DC Switching Regulators Part Context

The ISL8025AIRTAJZ belongs to the ISL8025 family of highly efficient monolithic synchronous step-down DC/DC converters. It shares pin-to-pin compatibility with related models such as the ISL8023 and ISL8024, facilitating design upgrades. The device utilizes current mode control architecture for fast transient response and excellent loop stability under varying load conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ISL8025AIRTAJZ is pin-to-pin compatible with the ISL8025AIRTAJ and ISL8025IRTAJZ. Designers may substitute these parts directly without schematic changes. Verify thermal performance and switching frequency settings match application requirements when replacing with adjacent family members.