ISL9123IITZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9123IITZ-T is a highly integrated buck switching regulator from Renesas Electronics, designed for ultra-low power applications. It features an input voltage range of 2.5V to 5.5V and delivers a maximum output current of 600mA. The device supports an adjustable output voltage down to 0.4V with high accuracy. Key electrical specifications include a quiescent current as low as 1.9µA in shutdown mode and a switching frequency selectable at 1MHz or 2.2MHz. It operates within a temperature range of -40°C to +85°C and is housed in an 8-pin UFBGA package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Ultra-low quiescent current consumption enhances battery life in portable devices
• Integrated bypass mode allows direct connection to the input supply for noise-sensitive loads
• High-precision voltage regulation ensures stable output under varying load conditions
• Compact footprint minimizes printed circuit board area requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring extended battery operation
• Battery-powered sensor nodes and IoT devices
• Noise-sensitive analog circuits requiring clean power rails
• Mobile communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or Renesas direct channels. Confirm the specific suffix matches the required thermal and mechanical specifications. Check for lifecycle status updates as availability may vary by region. Ensure proper handling procedures are followed due to the fine-pitch WLCSP packaging. Review the latest datasheet revision for any design-in recommendations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when minimizing standby current is critical for system efficiency. Consider the integrated bypass feature if powering sensitive analog sections directly from the battery. Evaluate the 600mA output limit against peak load requirements. Compare switching frequencies based on inductor size constraints versus electromagnetic interference requirements. Ensure the input voltage range aligns with the source battery characteristics.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the ISL9123 family of ultra-low IQ buck regulators. It shares functional similarities with the ISL9122 but offers higher output current capability. The series is targeted at mobile and wearable markets where power conservation is paramount. Renesas positions this part within its portfolio of energy-efficient power management solutions for portable systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-to-pin replacements should be verified against official substitution lists. Cross-reference electrical parameters such as quiescent current and output current limits. Ensure compatibility with existing passive components and control logic. Validate thermal performance in the final enclosure design before transitioning.