ISL9123IRNZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9123IRNZ-T7A is a synchronous step-down DC-DC converter from Renesas, designed for high-efficiency power management in portable and industrial applications. It integrates two N-channel MOSFETs and operates with an input voltage range of 2.7V to 5.5V. The device delivers a programmable output voltage from 0.6V to 3.6V with a maximum output current of 3A. Operating at a fixed frequency of 1MHz, it features cycle-by-cycle current limit protection and thermal shutdown. Packaged in a compact 6x6mm QFN format, it supports low standby current modes for extended battery life.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with dual N-channel MOSFETs for enhanced efficiency
• Programmable output voltage ranging from 0.6V to 3.6V via external resistors
• Fixed 1MHz switching frequency enabling compact passive component selection
• Comprehensive protection mechanisms including over-current and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient power regulation
• Industrial control systems needing stable low-voltage power supplies
• Battery-powered devices utilizing step-down conversion architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering suffix matches the required tape and reel quantity. Confirm the temperature grade corresponds to your operational environment requirements. Ensure the package marking aligns with your assembly process specifications. Cross-reference the datasheet revision date to guarantee compatibility with latest design guidelines. Validate pinout configurations against your PCB layout constraints before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Choose this component when input voltages remain between 2.7V and 5.5V. Select for applications demanding up to 3A continuous output current. Consider for designs requiring fixed 1MHz switching frequencies to minimize inductor size. Opt for this part when integrated protection features reduce bill-of-materials complexity. Evaluate suitability for space-constrained layouts due to the small QFN footprint.

Voltage Regulators - DC DC Switching Regulators Part Context

This model belongs to the ISL9123 family of synchronous buck converters. It shares architectural similarities with other Renesas power management ICs but offers specific current and voltage ratings. The T7A suffix indicates tape-and-reel packaging for automated assembly. It complements broader product lines by providing efficient step-down solutions for mid-range current applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other Renesas synchronous buck converters within similar voltage and current ranges. Verify pin-to-pin compatibility if replacing on existing PCBs. Check equivalent electrical parameters such as switching frequency and output voltage accuracy. Ensure thermal performance characteristics match the original design constraints. Consult official cross-reference lists for validated alternative part numbers.