Renesas ISL9104IRUWEVAL1Z

Overview

ISL9104IRUWEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104IRUWZ-T 1.2V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA. It features on-board input (VIN/GND) and output (VO/GND) connectors, jumper JP1 for enable/disable control, and a center-mounted µTDFN-6 IC layout optimized for low-noise DC/DC validation in portable power applications.

For engineers reviewing the ISL9104IRUWEVAL1Z datasheet, ISL9104IRUWEVAL1Z pinout, ISL9104IRUWEVAL1Z application, or ISL9104IRUWEVAL1Z equivalent, this board enables rapid functional verification of the ISL9104IRUWZ-T under real-world load, thermal, and transient conditions - including efficiency measurement, startup behavior, and regulation stability across 2.7–6.0V input range.

Technical Context

The ISL9104IRUWEVAL1Z implements a complete reference design for the ISL9104IRUWZ-T, a high-frequency (4.3MHz) current-mode synchronous buck regulator with integrated P-channel high-side and N-channel low-side MOSFETs. It supports 1.2V fixed output with 0.8V internal reference and operates down to 2.7V input.

Board-level design includes 1µH shielded inductor (KEMET L1207C1R0MPWS), dual 4.7µF X5R input/output capacitors (Murata GRM188R60J475KE19D), and 0Ω R1 shunt for fixed-output configuration - matching the factory-set 1.2V option without external feedback resistors.

Key Specifications

Availability

ISL9104IRUWEVAL1Z is available at Aetrix Electronics and suitable for portable electronics validation, battery-powered sensor node development, and embedded microcontroller power supply qualification requiring stable component supply and fast-turn evaluation support.

Supply support for ISL9104IRUWEVAL1Z 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The ISL9104IRUWEVAL1Z belongs to Renesas' precision DC/DC evaluation platform family, engineered to accelerate adoption of high-efficiency, high-frequency buck regulators in space-constrained, low-quiescent-current applications.

FAQ

What is the primary function of the ISL9104IRUWEVAL1Z?

The ISL9104IRUWEVAL1Z is a dedicated evaluation board for the ISL9104IRUWZ-T 1.2V fixed-output synchronous buck regulator. It provides a ready-to-use hardware platform to validate electrical performance-including efficiency, load regulation, line regulation, and transient response-without custom PCB design. The board integrates all necessary passives, jumpers, and test points to streamline characterization of the ISL9104IRUWZ-T in actual operating conditions.

Which IC does the ISL9104IRUWEVAL1Z evaluate?

The ISL9104IRUWEVAL1Z evaluates the ISL9104IRUWZ-T: a 4.3MHz, 500mA synchronous step-down regulator in 1.6×1.6mm µTDFN-6 package with factory-trimmed 1.2V output. The board's schematic, layout, and BOM are fully aligned with the ISL9104IRUWZ-T's recommended application circuit, including its 0Ω R1 shunt and unpopulated R2/C3 for fixed-output mode.

How do I enable or disable the ISL9104IRUWZ-T on the ISL9104IRUWEVAL1Z board?

Use jumper JP1: place the shunt on pins 1–2 ("Enable") to power up the ISL9104IRUWZ-T; place it on pins 2–3 ("Disable") to halt switching and force the IC into shutdown mode. This hardware-controlled enable/disable function allows safe testing of startup sequencing, quiescent current, and standby behavior without modifying firmware or external logic signals on the ISL9104IRUWEVAL1Z.

What input voltage range is supported by the ISL9104IRUWEVAL1Z?

The ISL9104IRUWEVAL1Z supports input voltages from 2.7V to 6.0V DC, as specified in AN1522 for the ISL9104IRUWZ-T. This range accommodates common battery sources (e.g., single-cell Li-ion at 3.0–4.2V) and regulated rails (e.g., 3.3V or 5V). Exceeding 6.0V risks damage to the ISL9104IRUWZ-T and associated components on the ISL9104IRUWEVAL1Z.

Does the ISL9104IRUWEVAL1Z support adjustable output voltage?

No - the ISL9104IRUWEVAL1Z is configured exclusively for the 1.2V fixed-output variant (ISL9104IRUWZ-T). Unlike the adjustable ISL9104IRUAEVAL1Z board, it populates a 0Ω resistor for R1 and leaves R2 and C3 unpopulated, per the BOM and schematic in AN1522. To evaluate adjustable output, users must select ISL9104IRUAEVAL1Z or modify the feedback network - which voids the validated reference design of the ISL9104IRUWEVAL1Z.