Renesas ISL9104IRUNEVAL1Z

Overview

ISL9104IRUNEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104IRUNZ-T 3.3V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA. It features on-board input (VIN/GND) and output (VO/GND) connectors, JP1 enable/disable jumper, and a center-mounted µTDFN-6 IC layout for rapid functional validation in low-power embedded power supply designs.

For engineers reviewing the ISL9104IRUNEVAL1Z datasheet, ISL9104IRUNEVAL1Z pinout, ISL9104IRUNEVAL1Z application, or ISL9104IRUNEVAL1Z equivalent, this board enables fast verification of ISL9104IRUNZ-T performance under real load conditions (0–500mA), input voltage range (2.7V to 6.0V), thermal behavior, and transient response - critical for battery-powered IoT sensors and portable MCU subsystems.

Technical Context

The ISL9104IRUNEVAL1Z implements the ISL9104IRUNZ-T - a high-efficiency, low-quiescent-current buck regulator with 4.3MHz switching frequency and integrated P-MOSFET high-side switch. Its design supports ultra-small external components: 1µH inductor (L1), dual 4.7µF X5R ceramic input/output capacitors (C1/C2), and fixed 3.3V output via internal feedback network.

Operation is controlled via JP1 (EN logic), with input sourced from DC 2.7–6.0V and output loaded up to 500mA across –40°C to +85°C ambient. The board omits R1, R2, and C3 - confirming factory-programmed 3.3V fixed output per ordering code ISL9104IRUNZ-T.

Key Specifications

Availability

ISL9104IRUNEVAL1Z is available at Aetrix Electronics and suitable for low-power embedded power validation, battery-operated sensor node development, and portable MCU subsystem testing requiring stable component supply and documented reference performance.

Supply support for ISL9104IRUNEVAL1Z 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 leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT applications.

The ISL9104IRUNEVAL1Z belongs to Renesas' precision DC-DC evaluation platform family, engineered to accelerate adoption of high-frequency, low-I_Q buck regulators in space-constrained, battery-sensitive designs.

FAQ

What is the purpose of the ISL9104IRUNEVAL1Z evaluation board?

The ISL9104IRUNEVAL1Z evaluation board provides a ready-to-use test platform for the ISL9104IRUNZ-T 3.3V fixed-output buck regulator. It allows engineers to validate key performance metrics - including efficiency, load regulation, line regulation, and transient response - without custom PCB design. All critical components (inductor, input/output capacitors, enable jumper) are pre-populated per AN1522 Rev 1.00.

Which IC does the ISL9104IRUNEVAL1Z evaluate?

The ISL9104IRUNEVAL1Z evaluates the ISL9104IRUNZ-T - a 4.3MHz, 500mA synchronous step-down regulator in 1.6×1.6mm µTDFN-6 package with factory-set 3.3V output. The board's BOM (Item #1) explicitly lists "ISL9104 or ISL9104A" as U1, and the ordering information confirms this variant maps to the 3.3V fixed-output version.

Does the ISL9104IRUNEVAL1Z support adjustable output voltage?

No. The ISL9104IRUNEVAL1Z is configured exclusively for the ISL9104IRUNZ-T 3.3V fixed-output variant. Per the BOM and schematic notes, R1 is populated as 0Ω, and R2 and C3 are unpopulated - matching the "fixed output options" configuration described in AN1522. Adjustable versions require ISL9104IRUAEVAL1Z or ISL9104AIRUAEVAL1Z.

What input voltage range is supported by the ISL9104IRUNEVAL1Z?

The ISL9104IRUNEVAL1Z supports input voltages from 2.7V up to 6.0V, as specified in the Recommended Operating Conditions section of AN1522. This range accommodates common sources such as single-cell Li-ion batteries (3.0–4.2V), USB ports (5V), or regulated 3.3V/5V rails - with proper derating above 4.5V per thermal limits.

How is the ISL9104IRUNEVAL1Z enabled or disabled during testing?

The ISL9104IRUNEVAL1Z uses jumper JP1 (1×3 header) for enable/disable control. Placing the shunt across pins 1–2 ("Enable") connects the EN pin of the ISL9104IRUNZ-T to VIN, activating regulation. Placing it across pins 2–3 ("Disable") grounds EN, halting switching and placing the IC in shutdown mode with <1µA quiescent current - as verified in the ISL9104 data sheet FN6829.