Renesas ISL9104AIRUFEVAL1Z

Overview

ISL9104AIRUFEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104AIRUFZ-T, a 2.5V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA. It features onboard input/output connectors (VIN/GND and VO/GND), enable/disable jumper JP1, and a center-mounted µTDFN-6 IC for rapid prototyping of low-voltage power rails in portable electronics.

For engineers reviewing the ISL9104AIRUFEVAL1Z datasheet, ISL9104AIRUFEVAL1Z pinout, ISL9104AIRUFEVAL1Z application, or ISL9104AIRUFEVAL1Z equivalent, this board enables fast validation of ISL9104A-based 2.5V DC-DC conversion under real load conditions (0–500mA), thermal stress (-40°C to +85°C), and input voltage range (2.7V to 6.0V).

Technical Context

The ISL9104AIRUFEVAL1Z implements the ISL9104AIRUFZ-T - a high-efficiency, low-quiescent-current buck regulator with internal P-MOSFET switch and 4.3MHz switching frequency. It uses a fixed 2.5V output configuration, eliminating external feedback resistors (R1 = 0Ω, R2 and C3 unpopulated) per BOM.

This board supports direct evaluation of key performance parameters: efficiency across 0–500mA loads, transient response to step-load changes, and thermal behavior at ambient temperatures from -40°C to +85°C, all within the recommended input voltage window of 2.7V to 6.0V.

Key Specifications

Availability

ISL9104AIRUFEVAL1Z is available at Aetrix Electronics and suitable for portable medical devices, IoT sensor nodes, and battery-powered microcontroller subsystems requiring stable component supply and rapid power architecture validation.

Supply support for ISL9104AIRUFEVAL1Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor manufacturer specializing in microcontrollers, analog power management, and timing solutions, with strong focus on automotive, industrial, and IoT applications.

The ISL9104AIRUFEVAL1Z belongs to Renesas' legacy Intersil power management evaluation platform line, designed specifically to accelerate development of compact, high-frequency, low-I_Q DC-DC converters for space-constrained portable systems.

FAQ

What is the purpose of the ISL9104AIRUFEVAL1Z evaluation board?

The ISL9104AIRUFEVAL1Z evaluation board provides a ready-to-use test platform for the ISL9104AIRUFZ-T 2.5V fixed-output buck regulator. It allows engineers to validate efficiency, thermal performance, transient response, and stability under real-world load and input conditions without custom PCB design. The board includes input/output connectors, enable jumper JP1, and a fully populated power stage centered on the µTDFN-6 IC.

Which IC does the ISL9104AIRUFEVAL1Z evaluate?

The ISL9104AIRUFEVAL1Z evaluates the ISL9104AIRUFZ-T - a 4.3MHz, 500mA synchronous step-down regulator with fixed 2.5V output, integrated high-side P-MOSFET, and ultra-low quiescent current. This IC is mounted at the board's center in a 1.6×1.6mm µTDFN-6 package and operates from 2.7V to 6.0V input.

How do I enable or disable the regulator on the ISL9104AIRUFEVAL1Z?

Use jumper JP1: place the shunt on pins 1–2 ("Enable") to activate the ISL9104AIRUFZ-T regulator, or on pins 2–3 ("Disable") to halt switching and reduce system standby current. This hardware-level control bypasses the need for external logic signals and directly manipulates the EN pin of the ISL9104AIRUFZ-T.

What are the input and output connection points on the ISL9104AIRUFEVAL1Z?

The ISL9104AIRUFEVAL1Z uses four-pin headers: J1 (VIN) and J2 (GND) on the left side for input power; J3 (VO) and J4 (GND) on the right side for regulated 2.5V output. These connectors accept standard 0.1"-spaced wires or mating headers, enabling quick integration with lab power supplies and electronic loads as specified in AN1522.

Does the ISL9104AIRUFEVAL1Z support adjustable output voltage?

No - the ISL9104AIRUFEVAL1Z is configured exclusively for the ISL9104AIRUFZ-T, a fixed 2.5V output variant. Per the BOM and schematic, R1 is populated as a 0Ω resistor and R2/C3 are unpopulated, confirming factory-set regulation. For adjustable operation, use ISL9104AIRUAEVAL1Z instead, which populates R1/R2 and C3 to support 0.8V–VIN programming via FB pin.