Renesas ISL9104AIRUBEVAL1Z

Overview

ISL9104AIRUBEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104AIRUBZ-T, a 1.5V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA with low quiescent current and high efficiency. It features on-board input/output connectors, enable/disable jumper JP1, and pre-configured 1.5V output for immediate validation in power management subsystems.

For engineers reviewing the ISL9104AIRUBEVAL1Z datasheet, ISL9104AIRUBEVAL1Z pinout, ISL9104AIRUBEVAL1Z application, or ISL9104AIRUBEVAL1Z equivalent, this board enables rapid functional verification, load transient testing, and efficiency measurement of the ISL9104AIRUBZ-T under real-world conditions including 2.7–6.0V input range and –40°C to +85°C ambient operation.

Technical Context

The ISL9104AIRUBEVAL1Z implements the ISL9104AIRUBZ-T - a fully integrated 6-pin µTDFN (1.6×1.6mm) buck converter with internal P-MOSFET and synchronous rectifier. It operates at 4.3MHz switching frequency to minimize external component size while maintaining stable regulation across 0–500mA load current.

Input voltage range is 2.7V or (VOUT + VDROP), whichever is higher, up to 6.0V; dropout voltage depends on load current and MOSFET/inductor DCR. The board uses a 1µH shielded inductor (KEMET L1207C1R0MPWS), dual 4.7µF X5R input/output capacitors (Murata GRM188R60J475KE19D), and includes test points (TP1) and 3-pin header JP1 for EN control.

Key Specifications

Availability

ISL9104AIRUBEVAL1Z is available at Aetrix Electronics and suitable for power supply validation, DC-DC converter qualification, and embedded system bring-up requiring stable component supply and traceable evaluation hardware.

Supply support for ISL9104AIRUBEVAL1Z 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 ISL9104 series was developed as a family of ultra-small, high-frequency buck regulators targeting space-constrained portable and battery-powered devices requiring fast transient response and low IQ operation.

FAQ

What is the purpose of the ISL9104AIRUBEVAL1Z evaluation board?

The ISL9104AIRUBEVAL1Z evaluation board provides a ready-to-use platform to validate the electrical performance, thermal behavior, and stability of the ISL9104AIRUBZ-T 1.5V fixed-output buck regulator. It includes all necessary passive components, input/output connectors, and enable control via JP1 - allowing engineers to evaluate efficiency, load regulation, and transient response without custom PCB design. The ISL9104AIRUBEVAL1Z supports immediate bench testing using standard lab equipment.

Which IC does the ISL9104AIRUBEVAL1Z evaluate?

The ISL9104AIRUBEVAL1Z evaluates the ISL9104AIRUBZ-T - a 1.5V fixed-output, 4.3MHz synchronous step-down regulator in a 6-lead 1.6×1.6mm µTDFN package. This IC integrates high- and low-side MOSFETs, internal compensation, and delivers up to 500mA output current. The ISL9104AIRUBEVAL1Z is specifically configured for the 1.5V variant and cannot be reconfigured for other output voltages without component changes.

How do I enable or disable the regulator on the ISL9104AIRUBEVAL1Z?

Enable or disable the ISL9104AIRUBZ-T on the ISL9104AIRUBEVAL1Z using jumper JP1: place the shunt on pins 1–2 ("Enable") to assert the EN pin high and activate regulation; place it on pins 2–3 ("Disable") to pull EN low and halt switching. The EN pin is directly accessible via JP1 - no soldering or configuration required. This allows safe power sequencing and quick functional isolation during testing of the ISL9104AIRUBEVAL1Z.

What input voltage range is supported by the ISL9104AIRUBEVAL1Z?

The ISL9104AIRUBEVAL1Z supports an input voltage range of 2.7V to 6.0V, aligned with the ISL9104AIRUBZ-T's operational limits. Minimum input is determined by the sum of output voltage (1.5V) and dropout loss (I_LOAD × [r_DS(ON) of P-MOSFET + inductor DCR]). Exceeding 6.0V risks damage to the ISL9104AIRUBZ-T and board components. The ISL9104AIRUBEVAL1Z is optimized for single-cell Li-ion, USB 2.0/3.0, and 3.3V/5V rail derivation.

Can the ISL9104AIRUBEVAL1Z be used to evaluate adjustable-output versions of the ISL9104A?

No - the ISL9104AIRUBEVAL1Z is factory-configured for the 1.5V fixed-output ISL9104AIRUBZ-T and lacks populated feedback resistors R1/R2 or C3 needed for adjustable operation. Boards designated ISL9104AIRUAEVAL1Z include those components and default to 1.6V (adjustable from 0.8V to VIN). To evaluate adjustable variants, use ISL9104AIRUAEVAL1Z or modify the ISL9104AIRUBEVAL1Z per AN1522 - but such modification voids factory calibration and is not supported for production validation of the ISL9104AIRUBEVAL1Z.