ISL9123II4Z-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9123II4Z-T is a highly integrated buck switching regulator from Renesas Electronics Corporation, housed in an 8-UFBGA package. It provides a positive adjustable output voltage ranging from 0.4V to 5.5V with a maximum output current of 600mA. The device features ultra-low quiescent current consumption: 950nA in regulation mode and 140nA in forced bypass mode. It includes a shutdown mode for minimal power drain and supports input voltages up to 5.5V.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Ultra-low quiescent current consumption in both regulation and bypass modes
• Integrated bypass function for direct power path operation
• Capable of supplying low output voltages down to 0.4V
• Highly integrated design minimizing external component count

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronics
• Wearable devices requiring extended standby time
• IoT sensors with strict power budgets
• Mobile communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the obsolete lifecycle status before procurement planning. Confirm the 8-UFBGA WLCSP package availability through authorized distributors. Ensure compatibility with existing PCB footprints and thermal requirements. Check for alternative active components if long-term supply is required.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications prioritizing ultra-low standby current over high output current. Suitable for systems where output voltage must be adjustable below 1V. Consider the limited 600mA output capability when designing for higher load demands. Verify input voltage range compatibility with the system power source.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the ISL9123 family of buck regulators, including variants like ISL9123A and ISL9123B. Designed by Renesas (formerly Intersil) for low-power management. The II4Z suffix indicates specific packaging and temperature grade specifications within the product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete lifecycle status, consider evaluating active alternatives from Renesas or other manufacturers with similar ultra-low IQ specifications and UFBGA-8 packages.