Renesas ISL9104AIRUNEVAL1Z

Overview

ISL9104AIRUNEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104AIRUNZ-T 3.3V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA. It features on-board VIN/GND and VO/GND connectors, JP1 enable/disable jumper, and pre-configured 3.3V output for rapid validation in low-power embedded systems.

For engineers reviewing the ISL9104AIRUNEVAL1Z datasheet, ISL9104AIRUNEVAL1Z pinout, ISL9104AIRUNEVAL1Z application, or ISL9104AIRUNEVAL1Z equivalent, this board enables fast functional verification of the ISL9104A regulator's efficiency, transient response, and enable control under real load conditions from 0–500mA and input voltages up to 6.0V.

Technical Context

The ISL9104AIRUNEVAL1Z implements the ISL9104AIRUNZ-T (3.3V fixed-output variant) in a 6-lead 1.6×1.6mm µTDFN package. It supports input voltage range from 2.7V or (VOUT + VDROP) - whichever is higher - up to 6.0V, with thermal operation from –40°C to +85°C ambient.

Board-level design includes 4.7µF X5R input/output capacitors (Murata GRM188R60J475KE19D), 1µH shielded inductor (KEMET L1207C1R0MPWS), and no external feedback resistors (R1 = 0Ω, R2 unpopulated), confirming fixed 3.3V configuration per ordering code and BOM notes.

Key Specifications

Availability

ISL9104AIRUNEVAL1Z is available at Aetrix Electronics and suitable for power management validation, DC-DC reference design prototyping, and production-ready buck regulator qualification requiring stable component supply in industrial, embedded, and IoT edge device development.

Supply support for ISL9104AIRUNEVAL1Z 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 for automotive, industrial, and enterprise applications.

The ISL9104A product line delivers high-efficiency, high-frequency integrated buck regulators targeting space-constrained, low-IQ applications such as portable instrumentation, wearables, and sensor nodes.

FAQ

What is the purpose of the ISL9104AIRUNEVAL1Z evaluation board?

The ISL9104AIRUNEVAL1Z evaluation board provides a ready-to-use platform to validate the electrical performance of the ISL9104AIRUNZ-T 3.3V fixed-output buck regulator. It enables measurement of efficiency, load/line regulation, transient response, and enable functionality without custom PCB design - directly supporting early-stage power architecture decisions.

Does the ISL9104AIRUNEVAL1Z support adjustable output voltage?

No. The ISL9104AIRUNEVAL1Z is configured specifically for the ISL9104AIRUNZ-T 3.3V fixed-output variant. Per the BOM and schematic, R1 is populated as 0Ω and R2 is unpopulated - confirming factory-set 3.3V output. Adjustable versions (e.g., ISL9104AIRUAEVAL1Z) use different resistor networks.

What input voltage range is supported by the ISL9104AIRUNEVAL1Z?

The ISL9104AIRUNEVAL1Z supports input voltages from 2.7V up to 6.0V, as defined by the ISL9104A datasheet and confirmed in AN1522 Section "Recommended Operating Conditions." This range accommodates common sources including single-cell Li-ion (3.0–4.2V), USB 5V, and regulated 5V industrial supplies.

How do I enable or disable the regulator on the ISL9104AIRUNEVAL1Z?

Use jumper JP1: place the shunt on pins 1–2 ("Enable") to activate the ISL9104AIRUNZ-T; place it on pins 2–3 ("Disable") to force shutdown. This hardware-controlled enable function allows safe power sequencing and quick functional isolation during testing.

Which components on the ISL9104AIRUNEVAL1Z board are critical for stable 3.3V operation?

Critical components include the ISL9104AIRUNZ-T IC itself, the 1µH KEMET inductor (L1207C1R0MPWS), and dual 4.7µF Murata X5R input/output capacitors (GRM188R60J475KE19D). These ensure proper loop stability, ripple suppression, and transient response per the ISL9104A design guidelines in AN1522.