Renesas ISL9104IRUBEVAL1Z

Overview

ISL9104IRUBEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104IRUBZ-T, a 1.5V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA. It features on-board input/output connectors, enable/disable jumper JP1, and pre-configured 1.5V output via internal feedback network for rapid validation in low-power portable applications.

For engineers reviewing the ISL9104IRUBEVAL1Z datasheet, ISL9104IRUBEVAL1Z pinout, ISL9104IRUBEVAL1Z application, or ISL9104IRUBEVAL1Z equivalent, this board enables fast functional verification of the ISL9104IRUBZ-T regulator under real-world load, thermal, and transient conditions with minimal setup.

Technical Context

This evaluation board implements the complete ISL9104IRUBZ-T power stage-including VIN, SW, GND, EN, FB, and NC pins-on a compact layout optimized for stability and noise measurement. The 1.6×1.6 mm µTDFN-6 package is mounted centrally, with input (VIN/GND) and output (VO/GND) connectors positioned for clean probing and load connection.

It supports recommended operating conditions: 2.7V–6.0V input voltage, 0–500mA load current, and −40°C to +85°C ambient temperature. Jumper JP1 provides hardware-level enable/disable control, and the default 1.5V output requires no external resistor programming.

Key Specifications

Availability

ISL9104IRUBEVAL1Z is available at Aetrix Electronics and suitable for power management validation, embedded system bring-up, and battery-powered device design requiring stable component supply and rapid prototyping capability.

Supply support for ISL9104IRUBEVAL1Z 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 industrial, automotive, and consumer applications.

The ISL9104IRUBEVAL1Z belongs to Renesas' evaluation platform portfolio for its high-frequency, low-I_Q buck regulators-designed to accelerate development of space-constrained, battery-sensitive systems like wearables and IoT edge nodes.

FAQ

What is the purpose of the ISL9104IRUBEVAL1Z evaluation board?

The ISL9104IRUBEVAL1Z evaluation board is a dedicated test platform for the ISL9104IRUBZ-T 1.5V fixed-output buck regulator. It allows engineers to verify regulation accuracy, transient response, efficiency, and thermal behavior without custom PCB design. All critical components-including the ISL9104IRUBZ-T IC, 1µH inductor, and input/output capacitors-are pre-mounted and optimized per Renesas' reference design.

Does the ISL9104IRUBEVAL1Z support adjustable output voltage?

No-the ISL9104IRUBEVAL1Z is configured exclusively for the 1.5V fixed-output variant (ISL9104IRUBZ-T). Unlike the adjustable version (ISL9104IRUAZ-T), it does not populate R1/R2 feedback resistors or C3. The output is factory-set and requires no external resistor network; changing output voltage would require replacing the IC and modifying the BOM.

What input voltage range is supported by the ISL9104IRUBEVAL1Z?

The ISL9104IRUBEVAL1Z supports an input voltage range of 2.7V to 6.0V, aligned with the ISL9104IRUBZ-T's operational limits. This range ensures compatibility with single-cell Li-ion (3.0–4.2V), dual-cell alkaline (2.7–3.6V), and regulated 5V rails. Exceeding 6.0V risks damage to the ISL9104IRUBZ-T and on-board components.

How do I enable or disable the regulator on the ISL9104IRUBEVAL1Z?

Use jumper JP1: place the shunt on pins 1–2 ("Enable") to power up the ISL9104IRUBZ-T; place it on pins 2–3 ("Disable") to force shutdown. This hardware-controlled enable function directly drives the EN pin of the ISL9104IRUBZ-T and is independent of software or external logic signals.

Which components are populated on the ISL9104IRUBEVAL1Z board?

The ISL9104IRUBEVAL1Z includes U1 (ISL9104IRUBZ-T), L1 (1µH inductor), C1/C2 (4.7µF X5R input/output capacitors), R1 (0Ω jumper for fixed-VOUT mode), and JP1 (3-pin enable header). C3 (47pF) and R2 (100kΩ) are omitted-consistent with fixed-output configuration per AN1522 BOM.